Tanaka; Tomoharu

Patent Applications and Registrations

Patent applications and USPTO patent grants for Tanaka; Tomoharu.The latest application filed is for "split-gate memory cells".

Company Profile

7.200.191

Tanaka; Tomoharu - Kanagawa JP
Tanaka; Tomoharu - Yokohama JP
Tanaka; Tomoharu - Yokohama-shi JP
Tanaka; Tomoharu - Tokyo JP
Tanaka; Tomoharu - Yokohami JP
Tanaka; Tomoharu - Minato-ku Tokyo
Tanaka; Tomoharu -

*profile and listings may contain filings by different individuals or companies with the same name. Review application materials to confirm ownership/assignment.

Patent Activity

Patent	Date
Multi-deck memory device including buffer circuitry under array Grant 11,450,381 - Tanaka September 20, 2	2022-09-20
Architecture for 3-D NAND memory Grant 11,380,397 - Morooka , et al. July 5, 2	2022-07-05
Split-gate Memory Cells App 20220208268 - Tanaka; Tomoharu	2022-06-30
Semiconductor Memory Device For Storing Multivalued Data App 20220139471 - SHIBATA; Noboru ; et al.	2022-05-05
Semiconductor memory device which stores plural data in a cell Grant 11,309,019 - Shibata , et al. April 19, 2	2022-04-19
Semiconductor memory device for storing multivalued data Grant 11,264,108 - Shibata , et al. March 1, 2	2022-03-01
Non-volatile semiconductor memory device adapted to store a multi-valued data in a single memory cell Grant 11,183,235 - Tanaka , et al. November 23, 2	2021-11-23
Semiconductor Memory Device Which Stores Plural Data In A Cell App 20210104274 - SHIBATA; Noboru ; et al.	2021-04-08
Architecture For 3-d Nand Memory App 20210098065 - Morooka; Midori ; et al.	2021-04-01
Semiconductor memory column decoder device and method Grant 10,950,309 - Yamada , et al. March 16, 2	2021-03-16
Semiconductor Memory Device For Storing Multivalued Data App 20210074372 - SHIBATA; Noboru ; et al.	2021-03-11
Multi-deck Memory Device Including Buffer Circuitry Under Array App 20210057020 - Tanaka; Tomoharu	2021-02-25
Current Monitoring In Semiconductor Packages App 20200411120 - Tanaka; Tomoharu	2020-12-31
Semiconductor memory device which stores plural data in a cell Grant 10,878,895 - Shibata , et al. December 29, 2	2020-12-29
Semiconductor memory device for storing multivalued data Grant 10,867,686 - Shibata , et al. December 15, 2	2020-12-15
Current monitoring in semiconductor packages Grant 10,803,962 - Tanaka October 13, 2	2020-10-13
Architecture for 3-D NAND memory Grant 10,803,944 - Morooka , et al. October 13, 2	2020-10-13
Current Monitoring In Semiconductor Packages App 20200312412 - Tanaka; Tomoharu	2020-10-01
Non-Volatile Semiconductor Memory Device Adapted to Store a Multi-Valued Data in a Single Memory Cell App 20200294582 - Tanaka; Tomoharu ; et al.	2020-09-17
Semiconductor Memory Device Which Stores Plural Data In A Cell App 20200251165 - Kind Code	2020-08-06
Semiconductor Memory Device For Storing Multivalued Data App 20200234779 - SHIBATA; Noboru ; et al.	2020-07-23
Non-volatile semiconductor memory device adapted to store a multi-valued data in a single memory cell Grant 10,706,919 - Tanaka , et al.	2020-07-07
Semiconductor memory device which stores plural data in a cell Grant 10,699,781 - Shibata , et al.	2020-06-30
Semiconductor memory device for storing multivalued data Grant 10,636,502 - Shibata , et al.	2020-04-28
Architecture For 3-d Nand Memory App 20200005869 - Morooka; Midori ; et al.	2020-01-02
Semiconductor Memory Device Which Stores Plural Data In A Cell App 20190362781 - Shibata; Noboru ; et al.	2019-11-28
Semiconductor Memory Device For Storing Multivalued Data App 20190362797 - SHIBATA; Noboru ; et al.	2019-11-28
Semiconductor memory device which stores plural data in a cell Grant 10,431,297 - Shibata , et al. O	2019-10-01
Semiconductor memory device for storing multivalued data Grant 10,418,117 - Shibata , et al. Sept	2019-09-17
Multiple blocks per string in 3D NAND memory Grant 10,381,086 - Goda , et al. A	2019-08-13
Non-Volatile Semiconductor Memory Device Adapted to Store a Multi-Valued Data in a Single Memory Cell App 20190172530 - Tanaka; Tomoharu ; et al.	2019-06-06
Architecture for 3-D NAND memory Grant 10,269,429 - Morooka , et al.	2019-04-23
Non-volatile semiconductor memory device adapted to store a multi-valued data in a single memory cell Grant 10,236,058 - Tanaka , et al.	2019-03-19
Semiconductor Memory Device Which Stores Plural Data In A Cell App 20190074057 - SHIBATA; NOBORU ; et al.	2019-03-07
Semiconductor Memory Device For Storing Multivalued Data App 20190013082 - SHIBATA; Noboru ; et al.	2019-01-10
Semiconductor Memory Column Decoder Device And Method App 20180342299 - Yamada; Shigekazu ; et al.	2018-11-29
Semiconductor memory device for storing multivalued data Grant 10,109,358 - Shibata , et al. October 23, 2	2018-10-23
Semiconductor memory device which stores plural data in a cell Grant 10,096,358 - Shibata , et al. October 9, 2	2018-10-09
Non-Volatile Semiconductor Memory Device Adapted to Store a Multi-Valued Data in a Single Memory Cell App 20180261283 - Tanaka; Tomoharu ; et al.	2018-09-13
Semiconductor memory column decoder device and method Grant 10,056,149 - Yamada , et al. August 21, 2	2018-08-21
Multiple Blocks Per String In 3d Nand Memory App 20180158529 - Goda; Akira ; et al.	2018-06-07
Non-volatile semiconductor memory device adapted to store a multi-valued data in a single memory cell Grant 9,990,987 - Tanaka , et al. June 5, 2	2018-06-05
Semiconductor Memory Device For Storing Multivalued Data App 20180122488 - SHIBATA; Noboru ; et al.	2018-05-03
Semiconductor Memory Device Which Stores Plural Data In A Cell App 20180096723 - Shibata; Noboru ; et al.	2018-04-05
Semiconductor memory device for storing multivalued data Grant 9,881,681 - Shibata , et al. January 30, 2	2018-01-30
Semiconductor memory device which stores plural data in a cell Grant 9,858,992 - Shibata , et al. January 2, 2	2018-01-02
Method and apparatus for initiating pre-read operation before completion of data load operation Grant 9,823,880 - Kawai , et al. November 21, 2	2017-11-21
Non-Volatile Semiconductor Memory Device Adapted to Store a Multi-Valued Data in a Single Memory Cell App 20170309329 - Tanaka; Tomoharu ; et al.	2017-10-26
Multiple blocks per string in 3D NAND memory Grant 9,786,375 - Goda , et al. October 10, 2	2017-10-10
Non-volatile semiconductor memory device adapted to store a multi-valued data in a single memory cell Grant 9,734,899 - Tanaka , et al. August 15, 2	2017-08-15
Semiconductor Memory Device Which Stores Plural Data In A Cell App 20170178721 - SHIBATA; Noboru ; et al.	2017-06-22
Partial page memory operations Grant 9,653,171 - Abraham , et al. May 16, 2	2017-05-16
Semiconductor Memory Column Decoder Device And Method App 20170125106 - YAMADA; SHIGEKAZU ; et al.	2017-05-04
Semiconductor memory device which stores plural data in a cell Grant 9,627,048 - Shibata , et al. April 18, 2	2017-04-18
Multiple Blocks Per String In 3d Nand Memory App 20170076805 - Goda; Akira ; et al.	2017-03-16
Semiconductor Memory Device For Storing Multivalued Data App 20170053706 - SHIBATA; Noboru ; et al.	2017-02-23
Non-Volatile Semiconductor Memory Device Adapted to Store a Multi-Valued Data in a Single Memory Cell App 20170040053 - Tanaka; Tomoharu ; et al.	2017-02-09
Game device and computer-readable storage medium Grant 9,539,505 - Tanaka , et al. January 10, 2	2017-01-10
Non-volatile semiconductor memory adapted to store a multi-valued data in a single memory cell Grant 9,508,422 - Tanaka , et al. November 29, 2	2016-11-29
Semiconductor memory column decoder device and method Grant 9,466,380 - Yamada , et al. October 11, 2	2016-10-11
Semiconductor memory device for storing multivalued data Grant 9,460,804 - Shibata , et al. October 4, 2	2016-10-04
Semiconductor Memory Device Which Stores Plural Data In A Cell App 20160284396 - SHIBATA; Noboru ; et al.	2016-09-29
Partial Page Memory Operations App 20160232979 - Abraham; Michael ; et al.	2016-08-11
Semiconductor Memory Column Decoder Device And Method App 20160232974 - Yamada; Shigekazu ; et al.	2016-08-11
Semiconductor memory device which stores plural data in a cell Grant 9,390,802 - Shibata , et al. July 12, 2	2016-07-12
Non-Volatile Semiconductor Memory Adapted to Store a Multi-Valued Data in a Single Memory Cell App 20160111147 - Tanaka; Tomoharu ; et al.	2016-04-21
Partial page memory operations Grant 9,318,199 - Abraham , et al. April 19, 2	2016-04-19
Non-volatile semiconductor memory adapted to store a multi-valued data in a single memory cell Grant 9,257,189 - Tanaka , et al. February 9, 2	2016-02-09
Semiconductor Memory Device For Storing Multivalued Data App 20160012906 - SHIBATA; Noboru ; et al.	2016-01-14
Single check memory devices and methods Grant 9,236,146 - Sarin , et al. January 12, 2	2016-01-12
Semiconductor Memory Device Which Stores Plural Data In A Cell App 20150348618 - SHIBATA; Noboru ; et al.	2015-12-03
Semiconductor memory device for storing multivalued data Grant 9,183,936 - Shibata , et al. November 10, 2	2015-11-10
Semiconductor memory device which stores plural data in a cell Grant 9,142,299 - Shibata , et al. September 22, 2	2015-09-22
Architecture For 3-d Nand Memory App 20150162084 - Morooka; Midori ; et al.	2015-06-11
Method of error correction of a memory Grant 9,053,043 - Tanaka , et al. June 9, 2	2015-06-09
Charge pump redundancy in a memory Grant 9,042,180 - Tanzawa , et al. May 26, 2	2015-05-26
Semiconductor Memory Device For Storing Multivalued Data App 20150109863 - SHIBATA; Noboru ; et al.	2015-04-23
Non-Volatile Semiconductor Memory Adapted to Store a Multi-Valued Data in a Single Memory Cell App 20150078092 - Tanaka; Tomoharu ; et al.	2015-03-19
Architecture for 3-D NAND memory Grant 8,964,474 - Morooka , et al. February 24, 2	2015-02-24
Semiconductor memory device for storing multivalued data Grant 8,947,930 - Shibata , et al. February 3, 2	2015-02-03
Non-volatile semiconductor memory device adapted to store a multi-valued data in a single memory cell Grant 8,929,135 - Tanaka , et al. January 6, 2	2015-01-06
Game Device And Computer-readable Storage Medium App 20140364222 - TANAKA; Tomoharu ; et al.	2014-12-11
Single Check Memory Devices And Methods App 20140351663 - Sarin; Vishal ; et al.	2014-11-27
Nonvolatile semiconductor memory device for rendering the same in a busy state after inputting data therein Grant 8,885,408 - Shibata , et al. November 11, 2	2014-11-11
Semiconductor Memory Device For Storing Multivalued Data App 20140233312 - SHIBATA; Noboru ; et al.	2014-08-21
Memory segment accessing in a memory device Grant 8,767,470 - Tanaka July 1, 2	2014-07-01
Semiconductor memory device for storing multivalued data Grant 8,743,607 - Shibata , et al. June 3, 2	2014-06-03
Partial Page Memory Operations App 20140122773 - Abraham; Michael ; et al.	2014-05-01
Single check memory devices and methods Grant 8,711,616 - Sarin , et al. April 29, 2	2014-04-29
Semiconductor Memory Device For Storing Multivalued Data App 20140071754 - SHIBATA; Noboru ; et al.	2014-03-13
Non-volatile Semiconductor Memory Device Adapted To Store A Multi-valued Data In A Single Memory Cell App 20140063976 - TANAKA; Tomoharu ; et al.	2014-03-06
Semiconductor Memory Device Which Stores Plural Data In A Cell App 20140029337 - Shibata; Noboru ; et al.	2014-01-30
Charge Pump Redundancy In A Memory App 20140029346 - Tanzawa; Toru ; et al.	2014-01-30
Semiconductor memory device for storing multivalued data Grant 8,619,468 - Shibata , et al. December 31, 2	2013-12-31
Architecture For 3-d Nand Memory App 20130336065 - Morooka; Midori ; et al.	2013-12-19
Non-volatile semiconductor memory device adapted to store a multi-valued data in a single memory cell Grant 8,605,511 - Tanaka , et al. December 10, 2	2013-12-10
Semiconductor Memory Column Decoder Device And Method App 20130315001 - Yamada; Shigekazu ; et al.	2013-11-28
Semiconductor memory device which stores plural data in a cell Grant 8,542,538 - Shibata , et al. September 24, 2	2013-09-24
Semiconductor memory column decoder device and method Grant 8,503,249 - Yamada , et al. August 6, 2	2013-08-06
Independent well bias management in a memory device Grant 8,498,159 - Goda , et al. July 30, 2	2013-07-30
Semiconductor Memory Device Which Stores Plural Data In A Cell App 20130148424 - Shibata; Noboru ; et al.	2013-06-13
Memory erase methods and devices Grant 8,462,559 - Yamada , et al. June 11, 2	2013-06-11
Flash Memory App 20130097473 - TANAKA; Tomoharu ; et al.	2013-04-18
Semiconductor memory device which stores plural data in a cell Grant 8,385,130 - Shibata , et al. February 26, 2	2013-02-26
Semiconductor Memory Device For Storing Multivalued Data App 20130039126 - SHIBATA; Noboru ; et al.	2013-02-14
Non-volatile semiconductor memory device having non-selected word lines adjacent to selected word lines being charged at different timing for program disturb control Grant 8,363,467 - Nakamura , et al. January 29, 2	2013-01-29
Flash memory Grant 8,365,025 - Tanaka , et al. January 29, 2	2013-01-29
Memory Segment Accessing In A Memory Device App 20120294088 - Tanaka; Tomoharu	2012-11-22
Semiconductor memory device for storing multivalued data Grant 8,310,871 - Shibata , et al. November 13, 2	2012-11-13
Non-volatile Semiconductor Memory Device Adapted To Store A Multi-valued Data In A Single Memory Cell App 20120236657 - TANAKA; Tomoharu ; et al.	2012-09-20
Nonvolatile Semiconductor Memory Device App 20120224422 - Shibata; Noboru ; et al.	2012-09-06
Independent Well Bias Management In A Memory Device App 20120218824 - Goda; Akira ; et al.	2012-08-30
Memory segment accessing in a memory device Grant 8,254,174 - Tanaka August 28, 2	2012-08-28
Nonvolatile semiconductor memory device Grant 8,223,558 - Tanaka , et al. July 17, 2	2012-07-17
Semiconductor Memory Device Which Stores Plural Data In A Cell App 20120163091 - Shibata; Noboru ; et al.	2012-06-28
Single Check Memory Devices And Methods App 20120163076 - Sarin; Vishal ; et al.	2012-06-28
Non-volatile semiconductor memory device adapted to store a multi-valued data in a single memory cell Grant 8,208,311 - Tanaka , et al. June 26, 2	2012-06-26
Nonvolatile semiconductor memory device with a voltage setting circuit for a step-up shift test Grant 8,189,389 - Shibata , et al. May 29, 2	2012-05-29
Independent well bias management in a memory device Grant 8,174,893 - Goda , et al. May 8, 2	2012-05-08
Memory Erase Methods And Devices App 20120092933 - YAMADA; Shigekazu ; et al.	2012-04-19
Semiconductor memory device which stores plural data in a cell Grant 8,154,930 - Shibata , et al. April 10, 2	2012-04-10
Semiconductor memory device Grant 8,154,922 - Tanaka , et al. April 10, 2	2012-04-10
Nonvolatile semiconductor memory device having protection function for each memory block Grant 8,111,551 - Tanaka , et al. February 7, 2	2012-02-07
NAND programming technique Grant 8,102,712 - Goda , et al. January 24, 2	2012-01-24
Memory erase methods and devices Grant 8,089,816 - Yamada , et al. January 3, 2	2012-01-03
Semiconductor Memory Column Decoder Device And Method App 20110286282 - Yamada; Shigekazu ; et al.	2011-11-24
Nonvolatile Semiconductor Memory Device App 20110267886 - Tanaka; Tomoharu ; et al.	2011-11-03
Semiconductor Memory Device For Storing Multivalued Data App 20110242890 - SHIBATA; Noboru ; et al.	2011-10-06
Semiconductor Memory Device App 20110222343 - TANAKA; Tomoharu ; et al.	2011-09-15
Nonvolatile Semiconductor Memory Device Having Protection Function For Each Memory Block App 20110205794 - Tanaka; Tomoharu ; et al.	2011-08-25
Semiconductor memory column decoder device and method Grant 8,000,151 - Yamada , et al. August 16, 2	2011-08-16
Nonvolatile semiconductor memory device Grant 8,000,147 - Tanaka , et al. August 16, 2	2011-08-16
Non-volatile Semiconductor Memory Device Having Non-selected Word Lines Adjacent To Selected Word Lines Being Charged At Different Timing For Program Disturb Control App 20110188315 - Nakamura; Hiroshi ; et al.	2011-08-04
Semiconductor memory device for storing multivalued data Grant 7,978,514 - Shibata , et al. July 12, 2	2011-07-12
Flash Memory App 20110167320 - TANAKA; Tomoharu ; et al.	2011-07-07
Nonvolatile semiconductor memory having plural data storage portions for a bit line connected to memory cells Grant 7,969,784 - Takeuchi , et al. June 28, 2	2011-06-28
NAND Programming Technique App 20110149654 - Goda; Akira ; et al.	2011-06-23
Nonvolatile semiconductor memory device having protection function for each memory block Grant 7,952,925 - Tanaka , et al. May 31, 2	2011-05-31
Semiconductor memory device Grant 7,952,933 - Tanaka , et al. May 31, 2	2011-05-31
Nonvolatile Semiconductor Memory Device App 20110116315 - Shibata; Noboru ; et al.	2011-05-19
Non-volatile semiconductor memory device having non-selected word lines adjacent to selected word lines being charged at different timing for program disturb control Grant 7,940,562 - Nakamura , et al. May 10, 2	2011-05-10
Nonvolatile Semiconductor Memory Having Plural Data Storage Portions For A Bit Line Connected To Memory Cells App 20110096598 - TAKEUCHI; Ken ; et al.	2011-04-28
Independent Well Bias Management In A Memory Device App 20110090739 - Goda; Akira ; et al.	2011-04-21
Non-volatile Semiconductor Memory Device Adapted To Store A Multi-valued Data In A Single Memory Cell App 20110090741 - Tanaka; Tomoharu ; et al.	2011-04-21
Flash memory Grant 7,908,529 - Tanaka , et al. March 15, 2	2011-03-15
Nonvolatile semiconductor memory device with first and second write sequences controlled by a command or an address Grant 7,894,259 - Shibata , et al. February 22, 2	2011-02-22
Multi-state EEPROM having write-verify control circuit Grant RE42,120 - Tanaka , et al. February 8, 2	2011-02-08
Nonvolatile semiconductor memory having plural data storage portions for a bit line connected to memory cells Grant 7,864,592 - Takeuchi , et al. January 4, 2	2011-01-04
Non-volatile semiconductor memory device adapted to store a multi-valued data in a single memory cell Grant 7,864,591 - Tanaka , et al. January 4, 2	2011-01-04
Memory Erase Methods And Devices App 20100309730 - Yamada; Shigekazu ; et al.	2010-12-09
Multi-state EEPROM having write-verify control circuit Grant RE41,969 - Tanaka , et al. November 30, 2	2010-11-30
Nonvolatile Semiconductor Memory Device Having Protection Function For Each Memory Block App 20100296339 - Tanaka; Tomoharu ; et al.	2010-11-25
Multi-state EEPROM having write-verify control circuit Grant RE41,950 - Tanaka , et al. November 23, 2	2010-11-23
Semiconductor Memory Device for Storing Multivalued Data App 20100277980 - SHIBATA; Noboru ; et al.	2010-11-04
Semiconductor memory device for storing multivalued data Grant 7,813,174 - Shibata , et al. October 12, 2	2010-10-12
Nonvolatile Semiconductor Memory Device App 20100226173 - Tanaka; Tomoharu ; et al.	2010-09-09
Nonvolatile semiconductor memory device having protection function for each memory block Grant 7,787,296 - Tanaka , et al. August 31, 2	2010-08-31
Semiconductor Memory Device Which Stores Plural Data In A Cell App 20100214852 - Shibata; Noboru ; et al.	2010-08-26
Semiconductor memory device for storing multivalued data Grant 7,782,670 - Shibata , et al. August 24, 2	2010-08-24
Multi-state EEPROM having write-verify control circuit Grant RE41,485 - Tanaka , et al. August 10, 2	2010-08-10
Memory Segment Accessing In A Memory Device App 20100195399 - Tanaka; Tomoharu	2010-08-05
Multi-state EEPROM having write-verify control circuit Grant RE41,468 - Tanaka , et al. August 3, 2	2010-08-03
Multi-state EEPROM having write-verify control circuit Grant RE41,456 - Tanaka , et al. July 27, 2	2010-07-27
Nonvolatile semiconductor memory device Grant 7,746,707 - Tanaka , et al. June 29, 2	2010-06-29
Semiconductor memory device with stores plural data in a cell Grant 7,738,302 - Shibata , et al. June 15, 2	2010-06-15
Non-volatile Semiconductor Memory Device Adapted To Store A Multi-valued Data In A Single Memory Cell App 20100118607 - TANAKA; Tomoharu ; et al.	2010-05-13
Non-volatile Semiconductor Memory Device Having Non-selected Word Lines Adjacent To Selected Word Lines Being Charged At Different Timing For Program Disturb Control App 20100118604 - Nakamura; Hiroshi ; et al.	2010-05-13
Semiconductor Memory Device App 20100110790 - TANAKA; Tomoharu ; et al.	2010-05-06
Multi-state EEPROM having write-verify control circuit Grant RE41,244 - Tanaka , et al. April 20, 2	2010-04-20
Non-volatile semiconductor memory device adapted to store a multi-valued data in a single memory cell Grant 7,672,168 - Tanaka , et al. March 2, 2	2010-03-02
Non-volatile semiconductor memory device having non-selected word lines adjacent to selected word lines being charged at different timing for program disturb control Grant 7,672,158 - Nakamura , et al. March 2, 2	2010-03-02
Nonvolatile Semiconductor Memory Device App 20100027333 - Shibata; Noboru ; et al.	2010-02-04
Semiconductor memory device Grant 7,649,780 - Tanaka , et al. January 19, 2	2010-01-19
Nonvolatile Semiconductor Memory Having Plural Data Storage Portions For A Bit Line Connected To Memory Cells App 20090323416 - TAKEUCHI; Ken ; et al.	2009-12-31
Behavior based programming of non-volatile memory Grant 7,633,807 - Chen , et al. December 15, 2	2009-12-15
Semiconductor Memory Device for Storing Multivalued Data App 20090303791 - SHIBATA; Noboru ; et al.	2009-12-10
Multi-state EEPROM having write-verify control circuit Grant RE41,021 - Tanaka , et al. December 1, 2	2009-12-01
Multi-state EEPROM having write-verify control circuit Grant RE41,020 - Tanaka , et al. December 1, 2	2009-12-01
Multi-state EEPROM having write-verify control circuit Grant RE41,019 - Tanaka , et al. December 1, 2	2009-12-01
Non-volatile Semiconductor Memory System App 20090279365 - TANAKA; Tomoharu	2009-11-12
Nonvolatile semiconductor memory device carrying out simultaneous programming of memory cells Grant 7,613,046 - Shibata , et al. November 3, 2	2009-11-03
Semiconductor memory device for storing multivalued data Grant 7,593,260 - Shibata , et al. September 22, 2	2009-09-22
Semiconductor memory column decoder device and method App 20090180333 - Yamada; Shigekazu ; et al.	2009-07-16
Semiconductor Memory Device for Storing Multivalued Data App 20090168515 - SHIBATA; Noboru ; et al.	2009-07-02
Multiple Level Cell Memory Device With Improved Reliability App 20090168513 - Tanaka; Tomoharu	2009-07-02
Flash Memory App 20090164712 - TANAKA; Tomoharu ; et al.	2009-06-25
Semiconductor memory device Grant 7,535,762 - Tanaka , et al. May 19, 2	2009-05-19
Segmented bit line for flash memory Grant 7,532,509 - Tanaka May 12, 2	2009-05-12
Flash memory Grant 7,509,566 - Tanaka , et al. March 24, 2	2009-03-24
Segmented Bit Line For Flash Memory App 20090003059 - Tanaka; Tomoharu	2009-01-01
Non-volatile semiconductor memory device adapted to store a multi-valued in a single memory cell Grant 7,468,908 - Tanaka December 23, 2	2008-12-23
Semiconductor Memory Device for Storing Multivalued Data App 20080304319 - SHIBATA; Noboru ; et al.	2008-12-11
Non-volatile Semiconductor Memory Device Adapted To Store A Multi-valued Data In A Single Memory Cell App 20080298129 - TANAKA; Tomoharu ; et al.	2008-12-04
Nonvolatile Semiconductor Memory Having Plural Data Storage Portions For A Bit Line Connected To Memory Cells App 20080266965 - Takeuchi; Ken ; et al.	2008-10-30
Semiconductor memory device for storing multivalued data Grant 7,443,724 - Shibata , et al. October 28, 2	2008-10-28
Semiconductor Memory Device Which Stores Plural Data In A Cell App 20080219058 - Shibata; Noboru ; et al.	2008-09-11
Nonvolatile Semiconductor Memory Device Having Protection Function For Each Memory Block App 20080205143 - TANAKA; Tomoharu ; et al.	2008-08-28
Semiconductor Memory Device App 20080205154 - Tanaka; Tomoharu ; et al.	2008-08-28
Methods for identifying non-volatile memory elements with poor subthreshold slope or weak transconductance Grant 7,414,894 - Lutze , et al. August 19, 2	2008-08-19
Non-volatile semiconductor memory device adapted to store a multi-valued data in a single memory cell Grant 7,405,970 - Tanaka , et al. July 29, 2	2008-07-29
Semiconductor Memory Device App 20080175067 - TANAKA; Tomoharu ; et al.	2008-07-24
Non-volatile Semiconductor Memory Device Having Non-selected Word Lines Adjacent To Selected Word Lines Being Charged At Different Timing For Program Disturb Control App 20080165581 - NAKAMURA; Hiroshi ; et al.	2008-07-10
Non-volatile semiconductor memory with large erase blocks storing cycle counts Grant 7,394,692 - Chen , et al. July 1, 2	2008-07-01
Non-volatile semiconductor memory device, electronic card using the same and electronic apparatus Grant 7,394,704 - Tanaka , et al. July 1, 2	2008-07-01
Nonvolatile semiconductor memory having plural data storage portions for a bit line connected to memory cells Grant 7,394,695 - Takeuchi , et al. July 1, 2	2008-07-01
Nonvolatile semiconductor memory device having protection function for each memory block Grant 7,376,010 - Tanaka , et al. May 20, 2	2008-05-20
Semiconductor memory device which stores plural data in a cell Grant 7,376,009 - Shibata , et al. May 20, 2	2008-05-20
Flash memory control method, flash memory system using the control method and flash memory device using the control method Grant RE40,252 - Tanaka April 22, 2	2008-04-22
Semiconductor Memory Device for Storing Multivalued Data App 20080084741 - SHIBATA; Noboru ; et al.	2008-04-10
Non-volatile semiconductor memory device having non-selected word lines adjacent to selected word lines being charged at different timing for program disturb control Grant 7,355,887 - Nakamura , et al. April 8, 2	2008-04-08
Semiconductor memory device Grant 7,349,259 - Tanaka , et al. March 25, 2	2008-03-25
Non-volatile Semiconductor Memory Device Adapted To Store A Multi-valued In A Single Memory Cell App 20080068893 - TANAKA; Tomoharu	2008-03-20
Nonvolatile Semiconductor Memory Device App 20080062764 - Tanaka; Tomoharu ; et al.	2008-03-13
Nonvolatile semiconductor memory having plural data storage portions for a bit line connected to memory cells Grant 7,342,825 - Takeuchi , et al. March 11, 2	2008-03-11
Nonvolatile semiconductor memory device for storing multivalued data Grant RE40,110 - Shibata , et al. February 26, 2	2008-02-26
Non-volatile Semiconductor Memory Adapted To Store A Multi-valued Data In A Single Memory Cell App 20080043530 - TANAKA; Tomoharu ; et al.	2008-02-21
Methods for identifying non-volatile memory elements with poor subthreshold slope or weak transconductance App 20080037319 - Lutze; Jeffrey W. ; et al.	2008-02-14
Semiconductor memory device for storing multivalued data Grant 7,315,471 - Shibata , et al. January 1, 2	2008-01-01
Nonvolatile semiconductor memory device Grant 7,310,270 - Tanaka , et al. December 18, 2	2007-12-18
Non-volatile semiconductor memory with large erase blocks storing cycle counts Grant 7,307,881 - Chen , et al. December 11, 2	2007-12-11
Nonvolatile Semiconductor Memory Device App 20070280017 - Shibata; Noboru ; et al.	2007-12-06
Non-volatile semiconductor memory device adapted to store a multi-valued in a single memory cell Grant 7,301,806 - Tanaka November 27, 2	2007-11-27
Nonvolatile semiconductor memory device with a ROM block settable in a write/erase inhibit mode Grant 7,295,469 - Shibata , et al. November 13, 2	2007-11-13
Semiconductor Memory Device Which Stores Plural Data In A Cell App 20070253250 - Shibata; Noboru ; et al.	2007-11-01
Non-volatile semiconductor memory adapted to store a multi-valued data in a single memory cell Grant 7,286,404 - Tanaka , et al. October 23, 2	2007-10-23
Flash Memory App 20070223277 - TANAKA; Tomoharu ; et al.	2007-09-27
Nonvolatile Semiconductor Memory Having Plural Data Storage Portions For A Bit Line Connected To Memory Cells App 20070223280 - Takeuchi; Ken ; et al.	2007-09-27
Nonvolatile semiconductor memory device and nonvolatile semiconductor memory system Grant 7,262,455 - Tanaka , et al. August 28, 2	2007-08-28
Nonvolatile Semiconductor Memory Device App 20070189070 - Tanaka; Tomoharu ; et al.	2007-08-16
Semiconductor memory device which stores plural data in a cell Grant 7,245,528 - Shibata , et al. July 17, 2	2007-07-17
Behavior Based Programming Of Non-volatile Memory App 20070121383 - Chen; Jian ; et al.	2007-05-31
Non-volatile semiconductor memory device adapted to store a multi-valued in a single memory cell Grant 7,224,615 - Tanaka May 29, 2	2007-05-29
Operating techniques for reducing effects of coupling between storage elements of a non-volatile memory operated in multiple data states Grant 7,224,613 - Chen , et al. May 29, 2	2007-05-29
Nonvolatile semiconductor memory device Grant 7,224,612 - Tanaka , et al. May 29, 2	2007-05-29
Flash memory Grant 7,219,285 - Tanaka , et al. May 15, 2	2007-05-15
Semiconductor Integrated Circuit Device App 20070076494 - Takeuchi; Ken ; et al.	2007-04-05
Nonvolatile semiconductor memory having plural data storage portions for a bit line connected to memory cells Grant 7,196,932 - Takeuchi , et al. March 27, 2	2007-03-27
Nonvolatile semiconductor memory having plural data storage portions for a bit line connected to memory cells App 20070058433 - Takeuchi; Ken ; et al.	2007-03-15
Semiconductor memory device Grant 7,180,787 - Hosono , et al. February 20, 2	2007-02-20
Semiconductor integrated circuit device Grant 7,180,815 - Fujiu , et al. February 20, 2	2007-02-20
Nonvolatile semiconductor memory having plural data storage portions for a bit line connected to memory cells Grant 7,177,196 - Takeuchi , et al. February 13, 2	2007-02-13
Behavior based programming of non-volatile memory Grant 7,177,199 - Chen , et al. February 13, 2	2007-02-13
Nonvolatile Semiconductor Memory Device App 20070025149 - Shibata; Noboru ; et al.	2007-02-01
Semiconductor Memory Device for Storing Multivalued Data App 20070016723 - SHIBATA; Noboru ; et al.	2007-01-18
Semiconductor memory device and electric device with the same Grant 7,164,605 - Kawai , et al. January 16, 2	2007-01-16
Non-volatile semiconductor memory device and memory system using the same Grant 7,139,201 - Tanaka , et al. November 21, 2	2006-11-21
Semiconductor memory device for storing multivalued data Grant 7,120,052 - Shibata , et al. October 10, 2	2006-10-10
Non-volatile semiconductor memory adapted to store a multi-valued data in a single memory cell App 20060203558 - Tanaka; Tomoharu ; et al.	2006-09-14
Non-Volatile Semiconductor Memory With Large Erase Blocks Storing Cycle Counts App 20060206770 - Chen; Jian ; et al.	2006-09-14
Nonvolatile semiconductor memory device with redundancy and security information circuitry Grant 7,106,627 - Shibata , et al. September 12, 2	2006-09-12
Delay circuit having function of filter circuit Grant 7,098,713 - Tanaka August 29, 2	2006-08-29
Semiconductor integrated circuit device App 20060176088 - Fujiu; Masaki ; et al.	2006-08-10
Nonvolatile semiconductor memory adapted to store a multi-valued data in a single memory cell Grant 7,088,616 - Tanaka , et al. August 8, 2	2006-08-08
Nonvolatile semiconductor memory device which uses some memory blocks in multilevel memory as binary memory blocks App 20060171210 - Nagashima; Hiroyuki ; et al.	2006-08-03
Non-volatile semiconductor memory with large erase blocks storing cycle counts Grant 7,085,161 - Chen , et al. August 1, 2	2006-08-01
Nonvolatile semiconductor memory device having protection function for each memory block App 20060164886 - Tanaka; Tomoharu ; et al.	2006-07-27
Nonvolatile semiconductor memory having plural data storage portions for a bit line connected to memory cells App 20060146610 - Takeuchi; Ken ; et al.	2006-07-06
Semiconductor memory device Grant 7,061,807 - Tanaka , et al. June 13, 2	2006-06-13
Operating techniques for reducing effects of coupling between storage elements of a non-volatile memory operated in multiple data states Grant 7,061,798 - Chen , et al. June 13, 2	2006-06-13
Non-volatile semiconductor memory device adapted to store a multi-valued in a single memory cell App 20060120158 - Tanaka; Tomoharu	2006-06-08
Semiconductor memory device for storing multivalued data App 20060114720 - Shibata; Noboru ; et al.	2006-06-01
Non-volatile semiconductor memory device and memory system using the same App 20060114729 - Tanaka; Tomoharu ; et al.	2006-06-01
Methods for identifying non-volatile memory elements with poor subthreshold slope or weak transconductance Grant 7,046,555 - Lutze , et al. May 16, 2	2006-05-16
Semiconductor memory device App 20060098488 - Tanaka; Tomoharu ; et al.	2006-05-11
Semiconductor integrated circuit device Grant 7,042,787 - Fujiu , et al. May 9, 2	2006-05-09
Semiconductor memory device and electric device with the same App 20060092708 - Kawai; Koichi ; et al.	2006-05-04
Non-volatile semiconductor memory device, electronic card using the same and electronic apparatus App 20060077712 - Tanaka; Tomoharu ; et al.	2006-04-13
Semiconductor memory device for storing multivalued data Grant 7,016,226 - Shibata , et al. March 21, 2	2006-03-21
Delay circuit having function of filter circuit Grant 6,989,704 - Tanaka January 24, 2	2006-01-24
Nonvolatile semiconductor memory adapted to store a multi-valued data in a single memory cell Grant 6,990,019 - Tanaka , et al. January 24, 2	2006-01-24
Non-volatile semiconductor memory device, electronic card using the same and electronic apparatus Grant 6,990,018 - Tanaka , et al. January 24, 2	2006-01-24
Semiconductor memory device and electric device with the same Grant 6,977,845 - Kawai , et al. December 20, 2	2005-12-20
Operating techniques for reducing effects of coupling between storage elements of a non-volatile memory operated in multiple data states App 20050276101 - Chen, Jian ; et al.	2005-12-15
Pattern layout of transfer transistors employed in row decoder Grant 6,972,996 - Hosono , et al. December 6, 2	2005-12-06
Nonvolatile semiconductor memory device App 20050265092 - Shibata, Noboru ; et al.	2005-12-01
Nonvolatile semiconductor memory device App 20050265097 - Tanaka, Tomoharu ; et al.	2005-12-01
Non-volatile semiconductor memory device and memory system using the same Grant 6,967,892 - Tanaka , et al. November 22, 2	2005-11-22
Non-volatile semiconductor memory device App 20050237829 - Nakamura, Hiroshi ; et al.	2005-10-27
Nonvolatile semiconductor memory device and data write method thereof Grant 6,954,378 - Tanaka October 11, 2	2005-10-11
Semiconductor memory device App 20050213385 - Hosono, Koji ; et al.	2005-09-29
Semiconductor memory device and storage method thereof Grant 6,944,055 - Shibata , et al. September 13, 2	2005-09-13
Non-volatile semiconductor memory with large erase blocks storing cycle counts Grant 6,944,063 - Chen , et al. September 13, 2	2005-09-13
Nonvolatile semiconductor memory device Grant 6,940,752 - Tanaka , et al. September 6, 2	2005-09-06
Nonvolatile semiconductor memory device with a ROM block settable in the write or erase inhibit mode Grant 6,937,512 - Shibata , et al. August 30, 2	2005-08-30
Non-volatile semiconductor memory system App 20050188147 - Tanaka, Tomoharu	2005-08-25
Semiconductor memory device which stores plural data in a cell App 20050169057 - Shibata, Noboru ; et al.	2005-08-04
Semiconductor memory device for storing multivalued data Grant 6,925,004 - Shibata , et al. August 2, 2	2005-08-02
Semiconductor memory device App 20050146935 - Tanaka, Tomoharu ; et al.	2005-07-07
Nonvolatile semiconductor memory adapted to store a multi-valued data in a single memory cell App 20050135154 - Tanaka, Tomoharu ; et al.	2005-06-23
Semiconductor memory device and storage method thereof App 20050111288 - Shibata, Noboru ; et al.	2005-05-26
Non-volatile semiconductor memory with large erase blocks storing cycle counts App 20050099870 - Chen, Jian ; et al.	2005-05-12
Non-volatile semiconductor memory with large erase blocks storing cycle counts App 20050102466 - Chen, Jian ; et al.	2005-05-12
Delay circuit having fuction of filter circuit App 20050093605 - Tanaka, Tomoharu	2005-05-05
Nonvolatile semiconductor memory Grant 6,885,583 - Tanaka April 26, 2	2005-04-26
Semiconductor integrated circuit device App 20050083751 - Fujiu, Masaki ; et al.	2005-04-21
Behavior based programming of non-volatile memory App 20050083735 - Chen, Jian ; et al.	2005-04-21
Semiconductor memory device for storing multivalued data Grant 6,876,578 - Shibata , et al. April 5, 2	2005-04-05
Methods for identifying non-volatile memory elements with poor subthreshold slope or weak transconductance App 20050057968 - Lutze, Jeffrey W. ; et al.	2005-03-17
Semiconductor memory device Grant 6,868,013 - Tanaka , et al. March 15, 2	2005-03-15
Operating techniques for reducing effects of coupling between storage elements of a non-volatile memory operated in multiple data states App 20050047223 - Chen, Jian ; et al.	2005-03-03
Semiconductor memory device for storing multivalued data App 20050047217 - Shibata, Noboru ; et al.	2005-03-03
Fail number detecting circuit of flash memory Grant 6,859,401 - Hosono , et al. February 22, 2	2005-02-22
Nonvolatile semiconductor memory device and data write method thereof App 20050030828 - Tanaka, Tomoharu	2005-02-10
Non-volatile semiconductor memory device adapted to store a multi-valued in a single memory cell App 20050024944 - Tanaka, Tomoharu	2005-02-03
Nonvolatile semiconductor memory Grant 6,850,435 - Tanaka February 1, 2	2005-02-01
Non-volatile semiconductor memory device with NAND string memory transistor controlled as block separation transistor Grant 6,850,439 - Tanaka February 1, 2	2005-02-01
Semiconductor memory device and electric device with the same App 20050018486 - Kawai, Koichi ; et al.	2005-01-27
Nonvolatile semiconductor memory device App 20050013169 - Tanaka, Tomoharu ; et al.	2005-01-20
Delay Circuit Having Function Of Filter Circuit App 20050001666 - Tanaka, Tomoharu	2005-01-06
Non-volatile semiconductor memory device, electronic card using the same and electronic apparatus App 20040257874 - Tanaka, Tomoharu ; et al.	2004-12-23
Multi-state nonvolatile memory capable of reducing effects of coupling between storage elements Grant 6,807,095 - Chen , et al. October 19, 2	2004-10-19
Nonvolatile semiconductor memory device and data write method thereof Grant 6,807,100 - Tanaka October 19, 2	2004-10-19
Nonvolatile semiconductor memory device and nonvolatile semiconductor memory system App 20040195617 - Tanaka, Tomoharu ; et al.	2004-10-07
Nonvolatile semiconductor memory device Grant 6,798,698 - Tanaka , et al. September 28, 2	2004-09-28
Pattern layout of transfer transistors employed in row decoder Grant 6,798,683 - Hosono , et al. September 28, 2	2004-09-28
Non-volatile semiconductor memory device and memory system using the same App 20040174747 - Tanaka, Tomoharu ; et al.	2004-09-09
Nonvolatile semiconductor memory App 20040174741 - Tanaka, Tomoharu	2004-09-09
Semiconductor memory device for storing multivalued data App 20040170056 - Shibata, Noboru ; et al.	2004-09-02
Non-volatile semiconductor memory device and memory system using the same Grant 6,781,895 - Tanaka , et al. August 24, 2	2004-08-24
Non-volatile semiconductor memory with large erase blocks storing cycle counts App 20040145952 - Chen, Jian ; et al.	2004-07-29
Nonvolatile semiconductor memory device and nonvolatile semiconductor memory system Grant 6,768,163 - Tanaka , et al. July 27, 2	2004-07-27
Semiconductor memory device for storing multivalued data App 20040105314 - Shibata, Noboru ; et al.	2004-06-03
Pattern layout of transfer transistors employed in row decoder App 20040095817 - Hosono, Koji ; et al.	2004-05-20
Non-volatile semiconductor memory device adapted to store a multi-valued data in a single memory cell App 20040066680 - Tanaka, Tomoharu ; et al.	2004-04-08
Fail number detecting circuit of flash memory App 20040062099 - Hosono, Koji ; et al.	2004-04-01
Nonvolatile Semiconductor Memory App 20040062077 - Tanaka, Tomoharu	2004-04-01
Nonvolatile semiconductor memory device with double data storage circuit for writing and write-verifying multi-state memory cells Grant 6,707,719 - Shibata , et al. March 16, 2	2004-03-16
Nonvolatile semiconductor memory adapted to store a multi-valued data in a single memory cell App 20040047183 - Tanaka, Tomoharu ; et al.	2004-03-11
Flash memory App 20040030971 - Tanaka, Tomoharu ; et al.	2004-02-12
Pattern layout of transfer transistors employed in a row decoder Grant 6,690,596 - Hosono , et al. February 10, 2	2004-02-10
Semiconductor memory device App 20040017715 - Tanaka, Tomoharu ; et al.	2004-01-29
Nonvolatile semiconductor memory device and data write method thereof App 20030234408 - Tanaka, Tomoharu	2003-12-25
Multi-level non-volatile semiconductor memory device with verify voltages having a smart temperature coefficient Grant 6,667,904 - Takeuchi , et al. December 23, 2	2003-12-23
Semiconductor memory device for storing multivalued data Grant 6,657,891 - Shibata , et al. December 2, 2	2003-12-02
Fail number detecting circuit of flash memory Grant 6,657,896 - Hosono , et al. December 2, 2	2003-12-02
Semiconductor storage device and setting method thereof Grant 6,650,578 - Kojima , et al. November 18, 2	2003-11-18
Nonvolatile semiconductor memory device App 20030206438 - Shibata, Noboru ; et al.	2003-11-06
Non-volatile semiconductor memory device adapted to store a multi-valued data in a single memory cell Grant 6,643,188 - Tanaka , et al. November 4, 2	2003-11-04
Semiconductor memory device Grant 6,621,738 - Tanaka , et al. September 16, 2	2003-09-16
Flash memory Grant 6,611,938 - Tanaka , et al. August 26, 2	2003-08-26
Nonvolatile semiconductor memory device App 20030147286 - Tanaka, Tomoharu ; et al.	2003-08-07
Non-volatile semiconductor memory device adapted to store a multi-valued data in a single memory cell App 20030147278 - Tanaka, Tomoharu ; et al.	2003-08-07
Nonvolatile semiconductor memory device with a ROM block settable in the write or erase inhibit mode Grant 6,600,676 - Shibata , et al. July 29, 2	2003-07-29
Semiconductor memory device and storage method thereof App 20030137872 - Shibata, Noboru ; et al.	2003-07-24
Operating techniques for reducing effects of coupling between storage elements of a non-volatile memory operated in multiple data states App 20030128586 - Chen, Jian ; et al.	2003-07-10
Electrically erasable and programmable nonvolatile semiconductor memory with automatic write-verify controller Grant 6,574,147 - Tanaka , et al. June 3, 2	2003-06-03
Fail number detecting circuit of flash memory App 20030081459 - Hosono, Koji ; et al.	2003-05-01
Semiconductor memory device App 20030076711 - Tanaka, Tomoharu ; et al.	2003-04-24
Pattern layout of transfer transistors employed in row decoder App 20030072173 - Hosono, Koji ; et al.	2003-04-17
Nonvolatile semiconductor memory device Grant 6,549,464 - Tanaka , et al. April 15, 2	2003-04-15
Nonvolatile semiconductor memory device Grant 6,545,909 - Tanaka , et al. April 8, 2	2003-04-08
Semiconductor storage device and setting method thereof App 20030043651 - Kojima, Masatsugu ; et al.	2003-03-06
Semiconductor memory device Grant 6,525,964 - Tanaka , et al. February 25, 2	2003-02-25
Nonvolatile semiconductor memory device App 20030035316 - Tanaka, Tomoharu ; et al.	2003-02-20
Operating techniques for reducing effects of coupling between storage elements of a non-volatile memory operated in multiple data states Grant 6,522,580 - Chen , et al. February 18, 2	2003-02-18
Semiconductor memory device and storage method thereof App 20030021156 - Shibata, Noboru ; et al.	2003-01-30
Fail number detecting circuit of flash memory Grant 6,507,518 - Hosono , et al. January 14, 2	2003-01-14
Operating Techniques For Reducing Effects Of Coupling Between Storage Elements Of A Non-volatile Memory Operated In Multiple Data States App 20030002348 - Chen, Jian ; et al.	2003-01-02
Electrically erasable and programmable non-volatile semiconductor memory with automatic write-verify controller App 20020145913 - Tanaka, Tomoharu ; et al.	2002-10-10
Nonvolatile semiconductor memory having plural data storage portions for a bit line connected to memory cells App 20020114207 - Takeuchi, Ken ; et al.	2002-08-22
Multi-level non-volatile semiconductor memory device with verify voltages having a smart temperature coefficient App 20020109539 - Takeuchi, Ken ; et al.	2002-08-15
Nonvolatile semiconductor memory device App 20020097603 - Tanaka, Tomoharu ; et al.	2002-07-25
Semiconductor memory device App 20020071312 - Tanaka, Tomoharu ; et al.	2002-06-13
Semiconductor memory device and storage method thereof App 20020057596 - Shibata, Noboru ; et al.	2002-05-16
Pattern layout of transfer transistors employed in row decoder App 20020051402 - Hosono, Koji ; et al.	2002-05-02
Fail number detecting circuit of flash memory App 20020051385 - Hosono, Koji ; et al.	2002-05-02
Nonvolatile semiconductor memory device and nonvolatile semiconductor memory system App 20020040990 - Tanaka, Tomoharu ; et al.	2002-04-11
Nonvolatile semiconductor memory device App 20020036930 - Shibata, Noboru ; et al.	2002-03-28
Electrically erasable and programmable non-volatile semiconductor memory with automatic write-verify controller App 20010048615 - Tanaka, Tomoharu ; et al.	2001-12-06
Nonvolatile semiconductor memory device App 20010040821 - Tanaka, Tomoharu ; et al.	2001-11-15
Nonvolatile semiconductor memory device for storing multivalued data App 20010036104 - Shibata, Noboru ; et al.	2001-11-01
Semiconductor memory device App 20010010645 - Tanaka, Tomoharu ; et al.	2001-08-02
Nonvolatile semiconductor memory device App 20010002172 - Tanaka, Tomoharu ; et al.	2001-05-31