Inventor · disambiguated record
Kenji Ohkuma
Also filed as: OHKUMA KENJI
13 granted patents·4 pending applications·139 citations·filing 2001–2013
91Inventor score
Top patents by PatentIndex Score
17 records- 0190US7194090B2Encryption apparatus, decryption apparatus, expanded key generating apparatus and method therefor, and recording mediumTOSHIBA KK·Filed 2001·Granted Mar 20, 2007·60 cites·24 claims
- 0285US7209556B2Encryption apparatus and method, and decryption apparatus and method based on block encryptionTOSHIBA KK·Filed 2005·Granted Apr 24, 2007·12 cites·11 claims
- 0381US7227948B2Encryption apparatus and method, and decryption apparatus and method based on block encryptionTOSHIBA KK·Filed 2001·Granted Jun 5, 2007·29 cites·18 claims
- 0472US7305085B2Encryption apparatus and method, and decryption apparatus and method based on block encryptionTOSHIBA KK·Filed 2001·Granted Dec 4, 2007·17 cites·9 claims
- 0569US8782114B2Arithmetic deviceYONEMURA TOMOKO·Filed 2012·Granted Jul 15, 2014·3 cites·5 claims
- 0669US8543630B2Exponentiation calculation apparatus and method for calculating square root in finite extension fieldTOSHIBA KK·Filed 2013·Granted Sep 24, 2013·2 cites·22 claims
- 0767US8675874B2Apparatus for performing data compression processing using algebraic torusMURATANI HIROFUMI·Filed 2009·Granted Mar 18, 2014·4 cites·8 claims
- 0865US8438205B2Exponentiation calculation apparatus and method for calculating square root in finite extension fieldYONEMURA TOMOKO·Filed 2009·Granted May 7, 2013·3 cites·22 claims
- 0961US8233616B2Apparatus and computer program product for performing data compression processing using algebraic torusMURATANI HIROFUMI·Filed 2009·Granted Jul 31, 2012·2 cites·8 claims
- 1059US8924448B2Arithmetic device, method, and program productISOGAI TAICHI·Filed 2012·Granted Dec 30, 2014·2 cites·15 claims
- 1159US8533243B2Representation converting apparatus, arithmetic apparatus, representation converting method, and computer program productYONEMURA TOMOKO·Filed 2009·Granted Sep 10, 2013·2 cites·25 claims
- 1254US7492903B2Secret key distribution method and secret key distribution systemTOSHIBA KK·Filed 2004·Granted Feb 17, 2009·3 cites·12 claims
- 1351US2006129486A1Quantum cash system and quantum cash apparatusOHKUMA KENJI·Filed 2006·Application pending·0 cites
- 1447US2010046741A1Apparatus, method, and computer program product for decrypting, and apparatus, method, and computer program product for encryptingTOSHIBA KK·Filed 2009·Application pending·0 cites
- 1547US2010046746A1Parameter generating device and cryptographic processing systemTOSHIBA KK·Filed 2009·Application pending·0 cites
- 1647US2010046745A1Encrypting apparatus, decrypting apparatus, cryptocommunication system, and methods and computer program products thereforTOSHIBA KK·Filed 2009·Application pending·0 cites
- 1743US7321429B2Microscope using quantum-mechanically entangled photonsTOSHIBA KK·Filed 2005·Granted Jan 22, 2008·0 cites·17 claims
Join the waitlist — get patent alerts
Get an alert when Kenji Ohkuma files or is granted a new patent.
We store only your email — no account needed. See our privacy policy.
Identity basis: PatentsView inventor disambiguation (2025Q4-odp release). How scoring works →