Takeo; Akihiko

Patent Applications and Registrations

Patent applications and USPTO patent grants for Takeo; Akihiko.The latest application filed is for "magnetic disk device and rewrite processing method".

Company Profile

18.73.93

Takeo; Akihiko - Kokubunji Tokyo JP
Takeo; Akihiko - Tokyo JP
Takeo; Akihiko - Kokubunji JP
Takeo; Akihiko - Kunitachi JP
TAKEO; Akihiko - Kunitachi-shi JP
Takeo; Akihiko - Kokubunji-shi JP
TAKEO; Akihiko - Kokubunnji Tokyo JP
Takeo; Akihiko - Minato-ku JP
Takeo; Akihiko - Tachikawa JP
Takeo; Akihiko - Kawasaki JP
Takeo; Akihiko - Tachikawa-shi JP
Takeo; Akihiko - Kawasaki-shi JP

*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
Magnetic Disk Device And Rewrite Processing Method App 20220068302 - Tomoda; Yusuke ; et al.	2022-03-03
Magnetic Disk Device Having First And Second Assist Elements And Write Operation Method App 20210366517 - SUZUKI; Hiroyuki ; et al.	2021-11-25
Magnetic disk drive and head adjusting method Grant 11,120,822 - Ohtake , et al. September 14, 2	2021-09-14
Magnetic disk device having first and second assist elements and write operation method Grant 11,114,127 - Suzuki , et al. September 7, 2	2021-09-07
Magnetic Disk Drive And Head Adjusting Method App 20210256996 - OHTAKE; Masaya ; et al.	2021-08-19
Magnetic disk device having two regions of different thicknesses Grant 10,964,344 - Sudo , et al. March 30, 2	2021-03-30
Magnetic Disk Device And Write Operation Method App 20210090605 - SUZUKI; Hiroyuki ; et al.	2021-03-25
Magnetic recording and reproducing device having a magnetic recording head including a magnetic flux control layer between a main magnetic pole and an auxiliary magnetic pole Grant 10,854,222 - Tomoda , et al. December 1, 2	2020-12-01
Magnetic Head And Disk Device Having The Same App 20200243108 - OHTAKE; Masaya ; et al.	2020-07-30
Magnetic Recording And Reading Apparatus And Magnetic Recording Method App 20200176020 - Matsumoto; Takuya ; et al.	2020-06-04
Magnetic Disk Device App 20200176026 - Sudo; Daisuke ; et al.	2020-06-04
Magnetic recording and reading apparatus and magnetic recording method Grant 10,672,419 - Matsumoto , et al.	2020-06-02
Magnetic head and disk device having gap layers with different magnetic relative permeabilities Grant 10,657,990 - Ohtake , et al.	2020-05-19
Magnetic disk device and write processing method Grant 10,650,860 - Maeto , et al.	2020-05-12
Magnetic head having difference skew angles at different regions on magnetic recording disk Grant 10,600,437 - Sudo , et al.	2020-03-24
Magnetic Recording And Reproducing Device App 20200090683 - Tomoda; Yusuke ; et al.	2020-03-19
Magnetic Disk Device And Write Processing Method App 20190378543 - MAETO; Nobuhiro ; et al.	2019-12-12
Magnetic recording head with specified thickness and saturation magnetic flux density products for STO magnetic layers Grant 10,438,616 - Yamada , et al. O	2019-10-08
Magnetic Disk Device App 20190295577 - Sudo; Daisuke ; et al.	2019-09-26
Magnetic disk device which controls a recording operation and a non-recording operation of a recording head and a recording head control method of the magnetic disk device Grant 10,403,308 - Koizumi , et al. Sep	2019-09-03
Magnetic recording apparatus Grant 10,360,931 - Ohtake , et al.	2019-07-23
Magnetic Recording Apparatus App 20190189149 - OHTAKE; Masaya ; et al.	2019-06-20
Magnetic head having magnetic pole and shield, and magnetic recording and reproducing device Grant 10,276,193 - Narita , et al.	2019-04-30
Magnetic Recording And Reproducing Device App 20190115047 - YAMADA; Kenichiro ; et al.	2019-04-18
Magnetic Head And Magnetic Recording And Reproducing Device App 20190088275 - NARITA; Naoyuki ; et al.	2019-03-21
Magnetic recording apparatus having magnetic flux control part and magnetic recording head having magnetic flux control part Grant 10,236,021 - Narita , et al.	2019-03-19
Magnetic Head And Disk Device Having The Same App 20190066717 - OHTAKE; Masaya ; et al.	2019-02-28
Magnetic Disk Device And Recording Head Control Method App 20190051322 - Koizumi; Gaku ; et al.	2019-02-14
Magnetic recording head with specified thickness and saturation magnetic flux density products for STO magnetic layers Grant 10,192,572 - Yamada , et al. Ja	2019-01-29
Magnetic Recording Apparatus And Magnetic Recording Head App 20180268848 - Narita; Naoyuki ; et al.	2018-09-20
Magnetic recording medium and method of manufacturing the same Grant 10,056,102 - Kimura , et al. August 21, 2	2018-08-21
Magnetic Recording And Reproducing Device App 20180114539 - Yamada; Kenichiro ; et al.	2018-04-26
Perpendicular magnetic recording medium, method of manufacturing the same, and magnetic recording/reproduction apparatus Grant 9,911,448 - Iwasaki , et al. March 6, 2	2018-03-06
Magnetic recording and reproducing device with stacked body configuration Grant 9,886,971 - Yamada , et al. February 6, 2	2018-02-06
Method of manufacturing magnetic recording head Grant 9,870,786 - Funayama , et al. January 16, 2	2018-01-16
Magnetic recording head and magnetic recording and reproducing device Grant 9,799,354 - Murakami , et al. October 24, 2	2017-10-24
Magnetic Recording Head And Magnetic Recording And Reproducing Device App 20170236537 - MURAKAMI; Shuichi ; et al.	2017-08-17
Method of manufacturing spin torque oscillator Grant 9,721,594 - Takeo , et al. August 1, 2	2017-08-01
Magnetic Recording And Reproducing Device App 20170186450 - YAMADA; Kenichiro ; et al.	2017-06-29
Method Of Manufacturing Magnetic Recording Head App 20170047084 - Funayama; Tomomi ; et al.	2017-02-16
Recording Head, Magnetic Recording Device Comprising Recording Head And Method Of Manufacturing Recording Head App 20160225392 - Takeo; Akihiko ; et al.	2016-08-04
Perpendicular Magnetic Recording Medium, Method Of Manufacturing The Same, And Magnetic Recording/reproduction Apparatus App 20160196847 - IWASAKI; Takeshi ; et al.	2016-07-07
Microwave-assisted Magnetic Head And Magnetic Recording/reproducing Apparatus App 20160163340 - Narita; Naoyuki ; et al.	2016-06-09
Pattern formation method, stamper manufacturing method, and magnetic recording medium manufacturing method Grant 9,324,355 - Takizawa , et al. April 26, 2	2016-04-26
Magnetic Recording Medium And Method Of Manufacturing The Same App 20160078892 - Kimura; Kaori ; et al.	2016-03-17
Perpendicular spin torque oscillator FMR frequency measurement method Grant 9,222,994 - Zhou , et al. December 29, 2	2015-12-29
Magnetic recording medium and method of manufacturing the same Grant 9,224,413 - Kimura , et al. December 29, 2	2015-12-29
Magnetic head with multiple reproducing elements each having magnetically coupled free layers, magnetic recording reproducing apparatus and magnetic head manufacturing method Grant 9,171,558 - Takeo , et al. October 27, 2	2015-10-27
High-frequency oscillation device, magnetic recording head including the same, and disk device Grant 9,111,552 - Takeo , et al. August 18, 2	2015-08-18
Method for producing magnetic recording medium Grant 9,099,143 - Takizawa , et al. August 4, 2	2015-08-04
Magnetic recording head and disk device with the same Grant 9,076,463 - Yamada , et al. July 7, 2	2015-07-07
Pattern Formation Method, Stamper Manufacturing Method, And Magnetic Recording Medium Manufacturing Method App 20150179205 - TAKIZAWA; Kazutaka ; et al.	2015-06-25
Perpendicular Magnetic Recording Medium And Method Of Manufacturing The Same App 20150162042 - Kimura; Kaori ; et al.	2015-06-11
Magnetic recording medium and method of manufacturing Grant 9,028,704 - Takizawa , et al. May 12, 2	2015-05-12
Magnetic recording medium and method for producing the same Grant 8,995,089 - Takizawa , et al. March 31, 2	2015-03-31
Spin Torque Oscillator, Method Of Manufacturing The Same, Magnetic Recording Head, Magnetic Head Assembly, And Magnetic Recording Apparatus App 20150074986 - TAKEO; Akihiko ; et al.	2015-03-19
Micropattern Formation Method, Release Method, Magnetic Recording Medium Manufacturing Method, Magnetic Recording Medium, And Stamper Manufacturing Method App 20150072172 - TAKIZAWA; Kazutaka ; et al.	2015-03-12
Method for manufacturing magnetic recording medium, magnetic recording medium, and magnetic recording and reproducing apparatus Grant 8,968,526 - Sasaki , et al. March 3, 2	2015-03-03
Magnetic Recording Head And Disk Device With The Same App 20150043106 - YAMADA; Kenichiro ; et al.	2015-02-12
Spin torque oscillator, method of manufacturing the same, magnetic recording head, magnetic head assembly, and magnetic recording apparatus Grant 8,929,031 - Takeo , et al. January 6, 2	2015-01-06
Method For Forming Pattern, Method For Producing Magnetic Recording Medium Using The Same, Magnetic Recording Medium, And Method For Producing Stamper App 20150004438 - Takizawa; Kazutaka ; et al.	2015-01-01
Magnetic Head, Magnetic Recording Reproducing Apparatus And Magnetic Head Manufacturing Method App 20140376130 - TAKEO; Akihiko ; et al.	2014-12-25
Magnetic head with beveled main pole and spin torque oscillator, method of manufacturing the same, and magnetic recording/reproduction apparatus Grant 8,908,329 - Shirotori , et al. December 9, 2	2014-12-09
Method of manufacturing magnetic recording medium Grant 8,858,809 - Watanabe , et al. October 14, 2	2014-10-14
Magnetic Recording Medium And Method Of Manufacturing The Same App 20140287265 - Kimura; Kaori ; et al.	2014-09-25
Thin magnetic film, method of manufacturing the same, and high frequency oscillator, magnetic head, magnetic recording medium, and magnetic recording/reproducing apparatus using thin magnetic film Grant 8,837,087 - Takeo , et al. September 16, 2	2014-09-16
Magnetic Recording Medium And Method For Producing The Same App 20140247519 - Takizawa; Kazutaka ; et al.	2014-09-04
Magnetic Recording Medium, Method For Producing The Same, And Method For Producing Stamper App 20140248513 - Takizawa; Kazutaka ; et al.	2014-09-04
Magnetic recording medium manufacturing method Grant 8,815,336 - Kimura , et al. August 26, 2	2014-08-26
Method Of Manufacturing Magnetoresistive Element App 20140153139 - TAKEO; Akihiko ; et al.	2014-06-05
Magnetic Recording Medium And Magnetic Recording/reproduction Apparatus App 20140139951 - Maeda; Tomoyuki ; et al.	2014-05-22
Thin Magnetic Film, Method Of Manufacturing The Same, And High Frequency Oscillator, Magnetic Head, Magnetic Recording Medium, And Magnetic Recording/reproducing Apparatus Using Thin Magnetic Film App 20140139952 - Takeo; Akihiko ; et al.	2014-05-22
Magnetic recording head and magnetic recording apparatus including the same Grant 8,717,705 - Yamada , et al. May 6, 2	2014-05-06
Magnetic Recording Medium Manufacturing Method And Micropattern Manufacturing Method App 20140120249 - KIMURA; Kaori ; et al.	2014-05-01
Magnetic Recording Medium, Method Of Manufacturing The Same, Magnet Recording/reproduction Apparatus, And Stamper Manufacturing Method App 20140120375 - TAKIZAWA; Kazutaka ; et al.	2014-05-01
Manufacturing method of magnetic recording medium Grant 8,703,621 - Kimura , et al. April 22, 2	2014-04-22
Method of manufacturing magnetoresistive element Grant 8,685,491 - Takeo , et al. April 1, 2	2014-04-01
Microwave-assisted Magnetic Recording Head, Method Of Manufacturing The Same, Magnetic Head Assembly Using The Same, And Magnetic Recording/reproduction Apparatus App 20140078620 - SHIROTORI; Satoshi ; et al.	2014-03-20
Magnetic recording head with high frequency oscillator and disk drive with the same Grant 8,675,308 - Yamada , et al. March 18, 2	2014-03-18
Magnetic Head, Method Of Manufacturing The Same, And Magnetic Recording/reproduction Apparatus App 20140009853 - Shirotori; Satoshi ; et al.	2014-01-09
Magnetic Recording Head, And Disk Drive Comprising The Same App 20140002924 - YAMADA; Kenichiro ; et al.	2014-01-02
Magnetic Recording Medium Manufacturing Method App 20140004272 - KIMURA; Kaori ; et al.	2014-01-02
Magnetic Recording Medium And Method Of Manufacturing App 20140002929 - TAKIZAWA; Kazutaka ; et al.	2014-01-02
Magnetic recording device, controller thereof, and magnetic recording method Grant 8,593,913 - Yamada , et al. November 26, 2	2013-11-26
Magnetic recording head and magnetic recording/reproducing apparatus using the same Grant 8,553,359 - Yamada , et al. October 8, 2	2013-10-08
Method Of Manufacturing Magnetic Recording Medium App 20130248485 - Watanabe; Akira ; et al.	2013-09-26
Magnetic Recording Medium And Method Of Manufacturing The Same App 20130252029 - Takizawa; Kazutaka ; et al.	2013-09-26
Perpendicular magnetic recording medium, method for producing the same, and magnetic recording/reproducing device Grant 8,512,884 - Takahashi , et al. August 20, 2	2013-08-20
Perpendicular Magnetic Recording Medium, Method Of Manufacturing The Same, And Magnetic Recording/reproduction Apparatus App 20130182351 - IWASAKI; Takeshi ; et al.	2013-07-18
Magnetic Recording Medium And Method Of Manufacturing The Same App 20130180948 - TAKIZAWA; Kazutaka ; et al.	2013-07-18
Recording head, disk drive with recording head, and recording method using recording head Grant 8,467,150 - Takeo , et al. June 18, 2	2013-06-18
Spin torque oscillator and magnetic recording apparatus Grant 8,467,149 - Takeo , et al. June 18, 2	2013-06-18
Perpendicular spin torque oscillator FMR frequency measurement method App 20130069626 - Zhou; Yuchen ; et al.	2013-03-21
Method For Producing Magnetic Recording Medium App 20130065083 - Takizawa; Kazutaka ; et al.	2013-03-14
Manufacturing Method Of Magnetic Recording Medium App 20130056441 - Kimura; Kaori ; et al.	2013-03-07
Recording Head, Disk Drive With Recording Head, And Recording Method Using Recording Head App 20120314326 - TAKEO; Akihiko ; et al.	2012-12-13
Magnetic Recording Medium And Magnetic Recording/reproduction Apparatus App 20120276414 - MAEDA; Tomoyuki ; et al.	2012-11-01
Method and apparatus for controlling head with spin-torque oscillator in a disk drive Grant 8,233,230 - Yano , et al. July 31, 2	2012-07-31
Head gimbal assembly and disk drive with the same Grant 8,203,804 - Taguchi , et al. June 19, 2	2012-06-19
Spin Torque Oscillator, Method Of Manufacturing The Same, Magnetic Recording Head, Magnetic Head Assembly, And Magnetic Recording Apparatus App 20120140354 - TAKEO; Akihiko ; et al.	2012-06-07
Magnetic Recording Head, Magnetic Head Assembly, And Magnetic Recording Apparatus App 20120134054 - TAKEO; Akihiko ; et al.	2012-05-31
Magnetic Recording Device, Controller Thereof, And Magnetic Recording Method App 20120134245 - Yamada; Yuichi ; et al.	2012-05-31
Spin Torque Oscillator And Magnetic Recording Apparatus App 20120134048 - TAKEO; Akihiko ; et al.	2012-05-31
Head Gimbal Assembly And Disk Drive With The Same App 20120092791 - TAGUCHI; Tomoko ; et al.	2012-04-19
Method Of Manufacturing Magnetoresistive Element App 20120050920 - Takeo; Akihiko ; et al.	2012-03-01
Magnetoresistive Element And Magnetic Recording Apparatus App 20110261478 - Takeo; Akihiko ; et al.	2011-10-27
Magnetic recording medium, method of manufacturing the same, and magnetic recording/reproducing apparatus Grant 8,034,472 - Ishibashi , et al. October 11, 2	2011-10-11
Magnetic recording medium, method of manufacturing magnetic recording medium and magnetic recording reproducing apparatus Grant 8,034,471 - Ishibashi , et al. October 11, 2	2011-10-11
Magnetic recording medium, process for producing same, and magnetic recording reproducing apparatus Grant 8,012,613 - Takahashi , et al. September 6, 2	2011-09-06
Magnetic Recording Head And Magnetic Recording/reproducing Apparatus Using The Same App 20110205667 - YAMADA; Kenichiro ; et al.	2011-08-25
Perpendicular Magnetic Recording Medium, Method For Producing The Same, And Magnetic Recording/reproducing Device App 20110151280 - Takahashi; Migaku ; et al.	2011-06-23
Method and apparatus for correcting data errors in a disk drive Grant 7,848,041 - Takeo December 7, 2	2010-12-07
Method And Apparatus For Controlling Head With Spin-torque Oscillator In A Disk Drive App 20100232053 - Yano; Koji ; et al.	2010-09-16
Apparatus for assisting write operation using high frequency magnetic field in disk drive Grant 7,791,829 - Takeo , et al. September 7, 2	2010-09-07
Method For Manufacturing Magnetic Recording Medium, Magnetic Recording Medium, And Magnetic Recording And Reproducing Apparatus App 20100188772 - Sasaki; Shingo ; et al.	2010-07-29
Magnetic Recording Medium, Process For Producing Same, And Magnetic Recording Reproducing Apparatus App 20100173175 - Takahashi; Migaku ; et al.	2010-07-08
Vertical Magnetic Recording Medium And Magnetic Recording Reproducing Apparatus App 20100165510 - Takahashi; Migaku ; et al.	2010-07-01
Magnetic Recording Medium, Method Of Manufacturing The Same, And Magnetic Recording/reproducing Apparatus App 20100039730 - ISHIBASHI; Shinichi ; et al.	2010-02-18
Magnetic Recording Medium, Method Of Manufacturing Magnetic Recording Medium And Magnetic Recording Reproducing Apparatus App 20100033873 - ISHIBASHI; Shinichi ; et al.	2010-02-11
Magnetic Recording Medium, Method Of Manufacturing The Same, And Magnetic Recording/reproducing Apparatus App 20090147401 - Takahashi; Migaku ; et al.	2009-06-11
Magnetic Head And Disk Drive With High-frequency Assisted Writing App 20090059418 - TAKEO; Akihiko ; et al.	2009-03-05
Apparatus For Assisting Write Operation Using High Frequency Magnetic Field In Disk Drive App 20090059417 - Takeo; Akihiko ; et al.	2009-03-05
Method And Apparatus For Correcting Data Errors In A Disk Drive App 20080297936 - Takeo; Akihiko	2008-12-04
Disk drive with magnetic head for perpendicular magnetic recording Grant 7,031,120 - Takeo April 18, 2	2006-04-18
Data channel for processing user data and servo data in a disk drive adopting perpendicular magnetic recording system Grant 7,023,634 - Takeo April 4, 2	2006-04-04
Magnetic disk drive with structure for avoiding DC magnetic disturbance on a disk surface Grant 6,999,257 - Takeo February 14, 2	2006-02-14
Disk drive Grant 6,930,843 - Aoyagi , et al. August 16, 2	2005-08-16
Method and apparatus for write compensation of perpendicular magnetic recording in disk drive Grant 6,903,890 - Aoyagi , et al. June 7, 2	2005-06-07
Disk drive and magnetic head device for perpendicular magnetic recording App 20050105213 - Takeo, Akihiko ; et al.	2005-05-19
Magnetic disk drive including read channel for processing differentiated read signal Grant 6,894,855 - Aoyagi , et al. May 17, 2	2005-05-17
Device for suppressing magnetic noise of dual-layered disk in a disk drive App 20050002123 - Takeo, Akihiko ; et al.	2005-01-06
Disk drive and magnetic head for perpendicular magnetic recording App 20040228031 - Takeo, Akihiko	2004-11-18
Device for suppressing magnetic noise of dual-layered disk in a disk drive Grant 6,791,800 - Takeo , et al. September 14, 2	2004-09-14
Magnetic head for performing perpendicular magnetic recording in a disk drive App 20040151036 - Aoyagi, Yuka ; et al.	2004-08-05
Disk drive with magnetic head for perpendicular magnetic recording App 20040075952 - Takeo, Akihiko	2004-04-22
Perpendicular magnetic recording head having narrow recording gap and perpendicular magnetic recording apparatus using the same Grant 6,707,643 - Takeo , et al. March 16, 2	2004-03-16
Combination perpendicular record and reproduce head having an auxiliary pole recessed from an air bearing surface and spaced from one of a pair of reproducing element sheilds Grant 6,618,227 - Yano , et al. September 9, 2	2003-09-09
Data channel for processing user data and servo data in a disk drive adopting perpendicular magnetic recording system App 20030063406 - Takeo, Akihiko	2003-04-03
Magnetic disk drive including read channel for processing differentiated read signal App 20030058561 - Aoyagi, Yuka ; et al.	2003-03-27
Method and apparatus for write compensation of perpendicular magnetic recording in disk drive App 20020135920 - Aoyagi, Yuka ; et al.	2002-09-26
Magnetic disk drive with structure for avoiding DC magnetic disturbance on a disk surface App 20020131199 - Takeo, Akihiko	2002-09-19
Recording head and magnetic recording apparatus App 20020036871 - Yano, Koji ; et al.	2002-03-28
Perpendicular magnetic recording head and perpendicular magnetic recording apparatus App 20020036863 - Takeo, Akihiko ; et al.	2002-03-28
Device for suppressing magnetic noise of dual-layered disk in a disk drive App 20020034052 - Takeo, Akihiko ; et al.	2002-03-21
Disk drive App 20020034029 - Aoyagi, Yuka ; et al.	2002-03-21