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Kenji Ohkuma
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Yokohama-shi, JP
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Patents Grants
last 30 patents
Information
Patent Grant
Arithmetic device, method, and program product
Patent number
8,924,448
Issue date
Dec 30, 2014
Kabushiki Kaisha Toshiba
Taichi Isogai
H04 - ELECTRIC COMMUNICATION TECHNIQUE
Information
Patent Grant
Arithmetic device
Patent number
8,782,114
Issue date
Jul 15, 2014
Kabushiki Kaisha Toshiba
Tomoko Yonemura
H04 - ELECTRIC COMMUNICATION TECHNIQUE
Information
Patent Grant
Apparatus for performing data compression processing using algebrai...
Patent number
8,675,874
Issue date
Mar 18, 2014
Kabushiki Kaisha Toshiba
Hirofumi Muratani
H04 - ELECTRIC COMMUNICATION TECHNIQUE
Information
Patent Grant
Exponentiation calculation apparatus and method for calculating squ...
Patent number
8,543,630
Issue date
Sep 24, 2013
Kabushiki Kaisha Toshiba
Tomoko Yonemura
G06 - COMPUTING CALCULATING COUNTING
Information
Patent Grant
Representation converting apparatus, arithmetic apparatus, represen...
Patent number
8,533,243
Issue date
Sep 10, 2013
Kabushiki Kaisha Toshiba
Tomoko Yonemura
G06 - COMPUTING CALCULATING COUNTING
Information
Patent Grant
Exponentiation calculation apparatus and method for calculating squ...
Patent number
8,438,205
Issue date
May 7, 2013
Kabushiki Kaisha Toshiba
Tomoko Yonemura
G06 - COMPUTING CALCULATING COUNTING
Information
Patent Grant
Apparatus and computer program product for performing data compress...
Patent number
8,233,616
Issue date
Jul 31, 2012
Kabushiki Kaisha Toshiba
Hirofumi Muratani
H04 - ELECTRIC COMMUNICATION TECHNIQUE
Information
Patent Grant
Secret key distribution method and secret key distribution system
Patent number
7,492,903
Issue date
Feb 17, 2009
Kabushiki Kaisha Toshiba
Kouichi Ichimura
H04 - ELECTRIC COMMUNICATION TECHNIQUE
Information
Patent Grant
Microscope using quantum-mechanically entangled photons
Patent number
7,321,429
Issue date
Jan 22, 2008
Kabushiki Kaisha Toshiba
Kouichi Ichimura
G01 - MEASURING TESTING
Information
Patent Grant
Encryption apparatus and method, and decryption apparatus and metho...
Patent number
7,305,085
Issue date
Dec 4, 2007
Kabushiki Kaisha Toshiba
Kenji Ohkuma
H04 - ELECTRIC COMMUNICATION TECHNIQUE
Information
Patent Grant
Encryption apparatus and method, and decryption apparatus and metho...
Patent number
7,227,948
Issue date
Jun 5, 2007
Kabushiki Kaisha Toshiba
Kenji Ohkuma
H04 - ELECTRIC COMMUNICATION TECHNIQUE
Information
Patent Grant
Encryption apparatus and method, and decryption apparatus and metho...
Patent number
7,209,556
Issue date
Apr 24, 2007
Kabushiki Kaisha Toshiba
Kenji Ohkuma
H04 - ELECTRIC COMMUNICATION TECHNIQUE
Information
Patent Grant
Encryption apparatus, decryption apparatus, expanded key generating...
Patent number
7,194,090
Issue date
Mar 20, 2007
Kabushiki Kaisha Toshiba
Hirofumi Muratani
H04 - ELECTRIC COMMUNICATION TECHNIQUE
Patents Applications
last 30 patents
Information
Patent Application
EXPONENTIATION CALCULATION APPARATUS AND METHOD FOR CALCULATING SQU...
Publication number
20130218939
Publication date
Aug 22, 2013
Kabushiki Kaisha Toshiba
Tomoko YONEMURA
G06 - COMPUTING CALCULATING COUNTING
Information
Patent Application
ARITHMETIC DEVICE, METHOD, AND PROGRAM PRODUCT
Publication number
20120239721
Publication date
Sep 20, 2012
KABUSHIKI KAISHA TOSHIBA
Taichi ISOGAI
G06 - COMPUTING CALCULATING COUNTING
Information
Patent Application
ARITHMETIC DEVICE
Publication number
20120124114
Publication date
May 17, 2012
Kabushiki Kaisha Toshiba
Tomoko Yonemura
H04 - ELECTRIC COMMUNICATION TECHNIQUE
Information
Patent Application
COMPUTING DEVICE, METHOD, AND COMPUTER PROGRAM PRODUCT
Publication number
20100063986
Publication date
Mar 11, 2010
Kabushiki Kaisha Toshiba
Tomoko YONEMURA
G06 - COMPUTING CALCULATING COUNTING
Information
Patent Application
APPARATUS AND COMPUTER PROGRAM PRODUCT FOR PERFORMING DATA COMPRESS...
Publication number
20100046742
Publication date
Feb 25, 2010
Kabushiki Kaisha Toshiba
Hirofumi MURATANI
H04 - ELECTRIC COMMUNICATION TECHNIQUE
Information
Patent Application
APPARATUS FOR PERFORMING DATA COMPRESSION PROCESSING USING ALGEBRAI...
Publication number
20100046743
Publication date
Feb 25, 2010
Kabushiki Kaisha Toshiba
Hirofumi MURATANI
H04 - ELECTRIC COMMUNICATION TECHNIQUE
Information
Patent Application
ENCRYPTING APPARATUS, DECRYPTING APPARATUS, CRYPTOCOMMUNICATION SYS...
Publication number
20100046745
Publication date
Feb 25, 2010
Kabushiki Kaisha Toshiba
Yoshikazu HANATANI
H04 - ELECTRIC COMMUNICATION TECHNIQUE
Information
Patent Application
APPARATUS, METHOD, AND COMPUTER PROGRAM PRODUCT FOR DECRYPTING, AND...
Publication number
20100046741
Publication date
Feb 25, 2010
Kabushiki Kaisha Toshiba
Taichi ISOGAI
H04 - ELECTRIC COMMUNICATION TECHNIQUE
Information
Patent Application
PARAMETER GENERATING DEVICE AND CRYPTOGRAPHIC PROCESSING SYSTEM
Publication number
20100046746
Publication date
Feb 25, 2010
Kabushiki Kaisha Toshiba
Tomoko YONEMURA
H04 - ELECTRIC COMMUNICATION TECHNIQUE
Information
Patent Application
REPRESENTATION CONVERTING APPARATUS, ARITHMETIC APPARATUS, REPRESEN...
Publication number
20100049777
Publication date
Feb 25, 2010
Kabushiki Kaisha Toshiba
Tomoko Yonemura
G06 - COMPUTING CALCULATING COUNTING
Information
Patent Application
ENCRYPTION APPARATUS AND METHOD, AND DECRYPTION APPARATUS AND METHO...
Publication number
20070058805
Publication date
Mar 15, 2007
Kenji Ohkuma
H04 - ELECTRIC COMMUNICATION TECHNIQUE
Information
Patent Application
Quantum cash system and quantum cash apparatus
Publication number
20060129486
Publication date
Jun 15, 2006
Kenji Ohkuma
G06 - COMPUTING CALCULATING COUNTING
Information
Patent Application
Microscope using quantum-mechanically entangled photons
Publication number
20050213107
Publication date
Sep 29, 2005
Kouichi Ichimura
G02 - OPTICS
Information
Patent Application
Secret key distribution method and secret key distribution system
Publication number
20050111665
Publication date
May 26, 2005
Kouichi Ichimura
H04 - ELECTRIC COMMUNICATION TECHNIQUE
Information
Patent Application
Encryption apparatus, decryption appatatus, expanded key generating...
Publication number
20020021802
Publication date
Feb 21, 2002
Hirofumi Muratani
H04 - ELECTRIC COMMUNICATION TECHNIQUE
Information
Patent Application
Encryption apparatus and method, and decryption apparatus and metho...
Publication number
20020016773
Publication date
Feb 7, 2002
Kenji Ohkuma
H04 - ELECTRIC COMMUNICATION TECHNIQUE
Information
Patent Application
Encryption apparatus and method, and decryption apparatus and metho...
Publication number
20010024502
Publication date
Sep 27, 2001
KAUBSHIKI KAISHA TOSHIBA
Kenji Ohkuma
H04 - ELECTRIC COMMUNICATION TECHNIQUE