Ishiguro; Ryuji

Patent Applications and Registrations

Patent applications and USPTO patent grants for Ishiguro; Ryuji.The latest application filed is for "enciphering apparatus and method, deciphering apparatus and method as well as information processing apparatus and method".

Company Profile

1.84.74

Ishiguro; Ryuji - Tokyo JP
- Tokyo JP
Ishiguro; Ryuji - Los Gatos CA US

*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
Enciphering apparatus and method, deciphering apparatus and method as well as information processing apparatus and method Grant 9,467,287 - Ishiguro , et al. October 11, 2	2016-10-11
Enciphering Apparatus And Method, Deciphering Apparatus And Method As Well As Information Processing Apparatus And Method App 20150381359 - Ishiguro; Ryuji ; et al.	2015-12-31
Data transmission system Grant 9,049,009 - Asano , et al. June 2, 2	2015-06-02
Enciphering apparatus and method, deciphering apparatus and method as well as information processing apparatus and method Grant 8,923,511 - Ishiguro , et al. December 30, 2	2014-12-30
Enciphering apparatus and method, deciphering apparatus and method as well as information processing apparatus and method Grant 08923511 -	2014-12-30
Enciphering apparatus and method, deciphering apparatus and method as well as information processing apparatus and method Grant 8,594,325 - Ishiguro , et al. November 26, 2	2013-11-26
Copyright protection storage medium, information recording apparatus and information recording method, and information playback apparatus and information playback method Grant 8,544,108 - Kawamoto , et al. September 24, 2	2013-09-24
Data Transmission System App 20130236008 - ASANO; Tomoyuki ; et al.	2013-09-12
Enciphering Apparatus And Method, Deciphering Apparatus And Method As Well As Information Processing Apparatus And Method App 20130236009 - ISHIGURO; Ryuji ; et al.	2013-09-12
Personal library on net Grant 8,464,356 - Ishiguro June 11, 2	2013-06-11
Data transmission system Grant 8,422,675 - Asano , et al. April 16, 2	2013-04-16
Article of manufacture for controlling the use of content by providing for the delegation of rendering rights Grant 8,352,374 - Swenson , et al. January 8, 2	2013-01-08
Streaming system for distributing encrypted compressed image data, and streaming method therefor Grant 8,325,918 - Tada , et al. December 4, 2	2012-12-04
Streaming system for distributing encrypted compressed image data, and streaming method therefor Grant 8,325,919 - Tada , et al. December 4, 2	2012-12-04
Enciphering Apparatus And Method, Deciphering Apparatus And Method As Well As Information Processing Apparatus And Method App 20120257744 - ISHIGURO; Ryuji ; et al.	2012-10-11
Enciphering apparatus and method, deciphering apparatus and method as well as information processing apparatus and method Grant 8,170,206 - Ishiguro , et al. May 1, 2	2012-05-01
Data Transmission System App 20110274272 - Asano; Tomoyuki ; et al.	2011-11-10
Information processing apparatus, information processing method, recording medium, and program Grant 8,042,192 - Kawamoto , et al. October 18, 2	2011-10-18
Data transmission system Grant 8,005,214 - Asano , et al. August 23, 2	2011-08-23
Information processing system Grant 7,958,366 - Ishiguro , et al. June 7, 2	2011-06-07
Information processing system and method using encryption key block Grant 7,957,537 - Kitaya , et al. June 7, 2	2011-06-07
Recording apparatus that records information for protecting intangible property right, recording method thereof, record medium thereof, and program thereof Grant 7,913,315 - Ishizaka , et al. March 22, 2	2011-03-22
Personal Library On Net App 20110055933 - Ishiguro; Ryuji	2011-03-03
Information managing apparatus and method, recording medium, and program Grant 7,861,313 - Kawamoto , et al. December 28, 2	2010-12-28
Enciphering apparatus and method, deciphering apparatus and method as well as information processing apparatus and method Grant 7,860,248 - Ishiguro , et al. December 28, 2	2010-12-28
Rendering Rights Delegation System And Method App 20100325417 - Swenson; Eric John ; et al.	2010-12-23
Enciphering Apparatus And Method, Deciphering Apparatus And Method As Well As Information Processing Apparatus And Method App 20100290619 - ISHIGURO; Ryuji ; et al.	2010-11-18
Rendering rights delegation system and method Grant 7,801,819 - Swenson , et al. September 21, 2	2010-09-21
Information processing method, information processing apparatus and recording medium Grant 7,765,604 - Tanaka , et al. July 27, 2	2010-07-27
Information processing system and method Grant 7,738,662 - Asano , et al. June 15, 2	2010-06-15
Contents furnishing system Grant 7,730,345 - Ishiguro , et al. June 1, 2	2010-06-01
Information processing system and method Grant 7,707,410 - Ishiguro , et al. April 27, 2	2010-04-27
Data Transmission System App 20090323943 - Asano; Tomoyuki ; et al.	2009-12-31
Data transmission system Grant 7,587,597 - Asano , et al. September 8, 2	2009-09-08
Information-processing device, information-processing method, recording medium, and program Grant 7,584,288 - Ebihara , et al. September 1, 2	2009-09-01
Information-processing device, information-processing method, recording medium, and program Grant 7,533,180 - Ebihara , et al. May 12, 2	2009-05-12
Transmitter device, transmitting method, receiver device, receiving method, communication system, and program storage medium Grant 7,522,726 - Ishiguro , et al. April 21, 2	2009-04-21
Information processing apparatus and method, and program storage medium Grant 7,516,497 - Kawakami , et al. April 7, 2	2009-04-07
Information Processing Apparatus, Information Processing Method, Recording Medium, And Program App 20090074182 - Kawamoto; Yoji ; et al.	2009-03-19
Information processing system and method for managing encrypted data with tag information Grant 7,505,599 - Ishiguro , et al. March 17, 2	2009-03-17
Information managing apparatus and method, recording medium, and program Grant 7,503,073 - Kawamoto , et al. March 10, 2	2009-03-10
Information processing apparatus, information processing method, recording medium, and program Grant 7,487,549 - Kawamoto , et al. February 3, 2	2009-02-03
Streaming system for distributing encrypted compressed image data, and streaming method therefor App 20090010430 - Tada; Keiko ; et al.	2009-01-08
Copyright Protection Storage Medium, Information Recording Apparatus and Information Recording Method, and Information Playback Apparatus and Information Playback Method App 20080289050 - Kawamoto; Yoji ; et al.	2008-11-20
Information processing system and method for distributing encrypted message data Grant 7,443,984 - Ishiguro , et al. October 28, 2	2008-10-28
Information processing apparatus and method, and program storage medium Grant 7,437,768 - Kawakami , et al. October 14, 2	2008-10-14
Information processing apparatus and method for managing grouped devices in an encrypted environment Grant 7,426,639 - Ishiguro September 16, 2	2008-09-16
Information processing system and method Grant 7,405,731 - Asano , et al. July 29, 2	2008-07-29
Information managing apparatus and method, recording medium, and program App 20080092243 - Kawamoto; Yoji ; et al.	2008-04-17
Information processing system and method Grant 7,346,170 - Asano , et al. March 18, 2	2008-03-18
Information processing device and method Grant 7,346,169 - Asano , et al. March 18, 2	2008-03-18
Information processing apparatus Grant 7,336,791 - Ishiguro February 26, 2	2008-02-26
Streaming system for distributing encrypted data, and streaming method therefor Grant 7,337,320 - Tada , et al. February 26, 2	2008-02-26
Information processing device, method, and program Grant 7,325,139 - Ishiguro , et al. January 29, 2	2008-01-29
Enciphering apparatus and method, deciphering apparatus and method as well as information processing apparatus and method App 20080013723 - Ishiguro; Ryuji ; et al.	2008-01-17
Information processing method, information processing apparatus and recording medium App 20070289025 - Tanaka; Koichi ; et al.	2007-12-13
Utilizing a key for enciphering and deciphering that is modified during enciphering and deciphering Grant 7,298,842 - Ishiguro , et al. November 20, 2	2007-11-20
Information processing system and method using encryption key block App 20070263875 - Kitaya; Yoshimichi ; et al.	2007-11-15
Data transmission system Grant 7,296,153 - Asano , et al. November 13, 2	2007-11-13
Information recording and/or reproducing method and information recording and/or reproducing device Grant 7,283,633 - Asano , et al. October 16, 2	2007-10-16
System and method for processing information using encryption key block Grant 7,269,257 - Kitaya , et al. September 11, 2	2007-09-11
Contents providing system Grant 7,266,691 - Ishiguro , et al. September 4, 2	2007-09-04
Information processing device and method, and program storage medium Grant 7,266,202 - Kawakami , et al. September 4, 2	2007-09-04
Information Processing Apparatus And Method, And Program Storage Medium App 20070204172 - KAWAKAMI; Itaru ; et al.	2007-08-30
Data transmission system Grant 7,263,613 - Asano , et al. August 28, 2	2007-08-28
Information processing method, information processing apparatus and recording medium Grant 7,260,721 - Tanaka , et al. August 21, 2	2007-08-21
Information Processing System App 20070192603 - ISHIGURO; Ryuji ; et al.	2007-08-16
Recording apparatus that records information for protecting intangible property right, recording method thereof, record medium thereof, and program thereof App 20070180534 - Ishizaka; Toshihiro ; et al.	2007-08-02
Contents Furnishing System App 20070174302 - ISHIGURO; Ryuji ; et al.	2007-07-26
Information processing method and apparatus and program storage medium for prohibiting duplication of contents in large quantities Grant 7,249,106 - Tanabe , et al. July 24, 2	2007-07-24
Transmitter device, transmitting method, receiver device, receiving method, communication system, and program storage medium Grant 7,246,234 - Ishiguro , et al. July 17, 2	2007-07-17
Enciphering apparatus and method, deciphering apparatus and method as well as information processing apparatus and method Grant 7,242,769 - Ishiguro , et al. July 10, 2	2007-07-10
Information processing system Grant 7,237,112 - Ishiguro , et al. June 26, 2	2007-06-26
Enciphering Apparatus And Method, Deciphering Apparatus And Method As Well As Information Processing Apparatus And Method App 20070140484 - Ishiguro; Ryuji ; et al.	2007-06-21
Enciphering apparatus and method, deciphering apparatus and method as well as information processing apparatus and method Grant 7,233,665 - Ishiguro , et al. June 19, 2	2007-06-19
Information processing device, information processing method, and program storage medium Grant 7,224,804 - Ishiguro , et al. May 29, 2	2007-05-29
Information recording/playback apparatus and method Grant 7,225,339 - Asano , et al. May 29, 2	2007-05-29
Information processing apparatus for watermarking digital content Grant 7,216,368 - Ishiguro May 8, 2	2007-05-08
Information processing system and method App 20070098177 - Asano; Tomoyuki ; et al.	2007-05-03
Contents furnishing system Grant 7,213,164 - Ishiguro , et al. May 1, 2	2007-05-01
Information Processing Apparatus And Method, And Program Storage Medium App 20070074051 - Kawakami; Itaru ; et al.	2007-03-29
Information processing apparatus App 20070044159 - Ishiguro; Ryuji	2007-02-22
Information processing system and method Grant 7,167,564 - Asano , et al. January 23, 2	2007-01-23
Information processing apparatus, information processing method, and program storage medium Grant 7,143,445 - Ishiguro , et al. November 28, 2	2006-11-28
Data transmission system Grant 7,134,023 - Asano , et al. November 7, 2	2006-11-07
Data processing system, data processing method, data processing apparatus, and program providing medium Grant 7,131,010 - Okaue , et al. October 31, 2	2006-10-31
Information-processing device, information-processing method, recording medium, and program App 20060230131 - Ebihara; Munetake ; et al.	2006-10-12
Information recording/reproducing apparatus and method Grant 7,093,128 - Asano , et al. August 15, 2	2006-08-15
Data transmission system Grant 7,085,930 - Asano , et al. August 1, 2	2006-08-01
Information processing system and method App 20060159272 - Ishiguro; Ryuji ; et al.	2006-07-20
Data transmission system Grant 7,073,061 - Asano , et al. July 4, 2	2006-07-04
Data transmission system Grant 7,073,060 - Asano , et al. July 4, 2	2006-07-04
Enciphering apparatus and method, deciphering apparatus and method as well as information processing apparatus and method App 20060140402 - Ishiguro; Ryuji ; et al.	2006-06-29
Information processing apparatus, information processing method, information processing system and recording medium Grant 7,065,214 - Ishiguro , et al. June 20, 2	2006-06-20
Transmitter device, transmitting method, receiver device, receiving method, communication system, and program storage medium App 20060056624 - Ishiguro; Ryuji ; et al.	2006-03-16
Location dependent key for decrypting copy protected material on a recording medium Grant 7,010,124 - Ishiguro , et al. March 7, 2	2006-03-07
Information processing apparatus and method, and program storage medium App 20060047978 - Kawakami; Itaru ; et al.	2006-03-02
Data transmission system Grant 6,975,726 - Asano , et al. December 13, 2	2005-12-13
Information processing system and method App 20050228809 - Asano, Tomoyuki ; et al.	2005-10-13
Data transmission system App 20050207573 - Asano, Tomoyuki ; et al.	2005-09-22
Data transmission system App 20050210250 - Asano, Tomoyuki ; et al.	2005-09-22
Data transmission system App 20050204135 - Asano, Tomoyuki ; et al.	2005-09-15
Data transmission system App 20050199406 - Asano, Tomoyuki ; et al.	2005-09-15
Data transmission system App 20050204137 - Asano, Tomoyuki ; et al.	2005-09-15
Data transmission system App 20050204136 - Asano, Tomoyuki ; et al.	2005-09-15
Data transmission system Grant 6,944,763 - Asano , et al. September 13, 2	2005-09-13
Data transmission system App 20050198503 - Asano, Tomoyuki ; et al.	2005-09-08
Data transmission system App 20050188229 - Asano, Tomoyuki ; et al.	2005-08-25
Information processing apparatus, information processing method, information processing system and recording medium Grant 6,934,463 - Ishiguro , et al. August 23, 2	2005-08-23
Information processing system and method Grant 6,911,974 - Asano , et al. June 28, 2	2005-06-28
Rendering rights delegation system and method App 20050138357 - Swenson, Eric John ; et al.	2005-06-23
Information processing device and method, program storage medium and program App 20050119967 - Ishiguro, Ryuji ; et al.	2005-06-02
Information management device, method, recording medium, and program App 20050075981 - Kawamoto, Yoji ; et al.	2005-04-07
Information processing device, method, recording medium, and program App 20050060334 - Kawamoto, Yoji ; et al.	2005-03-17
Information processing device and mehtod, information providing device and method, use right management device and method, recording medium, and program App 20050044046 - Ishiguro, Ryuji	2005-02-24
Contents furnishing system App 20040243610 - Ishiguro, Ryuji ; et al.	2004-12-02
Information processing device, method, and program App 20040243808 - Ishiguro, Ryuji ; et al.	2004-12-02
Information processing device, method, recording medium and program App 20040210762 - Kawamoto, Yoji ; et al.	2004-10-21
Content provider system Grant 6,807,641 - Ishiguro , et al. October 19, 2	2004-10-19
Processing method and apparatus for encrypted data transfer Grant 6,792,539 - Oishi , et al. September 14, 2	2004-09-14
Streaming system for distributing encrypted compressed image data, and streating method thereof App 20040177267 - Tada, Keiko ; et al.	2004-09-09
Streaming system for delivering encrypted data, and streaming method thereof App 20040156508 - Tada, Keiko ; et al.	2004-08-12
Information processing apparatus, information processing method, information processing system and recording medium Grant 6,697,945 - Ishiguro , et al. February 24, 2	2004-02-24
Utilizing A Key For Enciphering And Deciphering That Is Modified During Enciphering And Deciphering App 20030191956 - Ishiguro, Ryuji ; et al.	2003-10-09
Information processing apparatus App 20030185397 - Ishiguro, Ryuji	2003-10-02
Information processing system and method App 20030185396 - Asano, Tomoyuki ; et al.	2003-10-02
Information processing apparatus App 20030185399 - Ishiguro, Ryuji	2003-10-02
Information processor App 20030182236 - Tanaka, Koichi ; et al.	2003-09-25
Information processing apparatus App 20030177393 - Ishiguro, Ryuji	2003-09-18
Information processing apparatus App 20030159033 - Ishiguro, Ryuji	2003-08-21
Information processing system and method App 20030142824 - Asano, Tomoyuki ; et al.	2003-07-31
Recording apparatus, recording method, recording medium, and program for recording information protecting intangible property right App 20030138100 - Ishizaka, Toshihiro ; et al.	2003-07-24
Information processing system and method App 20030140227 - Asano, Tomoyuki ; et al.	2003-07-24
Information processing device, information processing method and program storage medium App 20030105956 - Ishiguro, Ryuji ; et al.	2003-06-05
Information processing system and method App 20030076958 - Ishiguro, Ryuji ; et al.	2003-04-24
Data transmission apparatus and method, data receiving apparatus and method, and data transmitting/receiving system and method Grant 6,539,094 - Osakabe , et al. March 25, 2	2003-03-25
Information recording/reproducing apparatus and method App 20030016827 - Asano, Tomoyuki ; et al.	2003-01-23
Information Recording/Playback Apparatus and Method App 20030016826 - Asano, Tomoyuki ; et al.	2003-01-23
Information processing apparatus, information processing method, information processing system and recording medium App 20020199105 - Ishiguro, Ryuji ; et al.	2002-12-26
Information processing apparatus, information processing method, information processing system and recording medium App 20020194475 - Ishiguro, Ryuji ; et al.	2002-12-19
Information processing device and processing method App 20020164034 - Asano, Tomoyuki ; et al.	2002-11-07
System and method for processing information using encryption key block App 20020150250 - Kitaya, Yoshimichi ; et al.	2002-10-17
Information recording/reproducing apparatus and method App 20020150251 - Asano, Tomoyuki ; et al.	2002-10-17
Information-processing device, information-processing method, recording medium, and program App 20020147821 - Ebihara, Munetake ; et al.	2002-10-10
Information processing system and method App 20020136411 - Ishiguro, Ryuji ; et al.	2002-09-26
Data processing system, data processing method, data processing apparatus, and program providing medium App 20020116622 - Okaue, Takumi ; et al.	2002-08-22
Information processing method, information processing apparatus and recording medium App 20020114466 - Tanaka, Koichi ; et al.	2002-08-22
Information processing apparatus, information processing method, and program storage medium App 20020083004 - Saneto, Takanori ; et al.	2002-06-27
Information Processing Apparatus, Information Processing Method, Information Processing System And Recording Medium App 20020083319 - ISHIGURO, RYUJI ; et al.	2002-06-27
Information Processing Apparatus, Information Processing Method, Information Processing System And Recording Medium Using An Apparatus Id And Provided License Key For Authentication Of Each Information To Be Processed Grant 6,360,320 - Ishiguro , et al. March 19, 2	2002-03-19
Information Processing Apparatus, Information Processing Method, Information Processing System And Recording Medium App 20010044897 - ISHIGURO, RYUJI ; et al.	2001-11-22
Enciphering apparatus and method, deciphering apparatus and method as well as information processing apparatus and method Grant 6,256,391 - Ishiguro , et al. July 3, 2	2001-07-03
Encrypting method and apparatus, recording method, decrypting method and apparatus, and recording medium Grant 5,917,910 - Ishiguro , et al. June 29, 1	1999-06-29
Method and device for data decryption, a method and device for device identification, a recording medium, a method of disk production, and a method and apparatus for disk recording Grant 5,883,958 - Ishiguro , et al. March 16, 1	1999-03-16
Encryption method, encryption apparatus, recording method, decoding method, decoding apparatus and recording medium Grant 5,796,839 - Ishiguro August 18, 1	1998-08-18