Toshihiko Ogihara

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Tokyo, JP

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Patents Grantslast 30 patents

Information Patent Grant
Communication system, transmission apparatus, reception apparatus,...
- Patent number 10,178,440
- Issue date Jan 8, 2019
- NTT Communications Corporation
- Toshihiko Ogihara
- H04 - ELECTRIC COMMUNICATION TECHNIQUE
Information Patent Grant
Secret information management scheme based on secret sharing scheme
- Patent number 8,085,938
- Issue date Dec 27, 2011
- NTT Communications Corporation
- Makoto Kagaya
- H04 - ELECTRIC COMMUNICATION TECHNIQUE
Information Patent Grant
Data division method and device using exclusive or calculation
- Patent number 7,616,766
- Issue date Nov 10, 2009
- NTT Communications Corporation
- Toshihiko Ogihara
- H04 - ELECTRIC COMMUNICATION TECHNIQUE

Patents Applicationslast 30 patents

Information Patent Application
COMMUNICATION SYSTEM, TRANSMISSION APPARATUS, RECEPTION APPARATUS,...
- Publication number 20170180816
- Publication date Jun 22, 2017
- NTT COMMUNICATIONS CORPORATION
- Toshihiko OGIHARA
- H04 - ELECTRIC COMMUNICATION TECHNIQUE
Information Patent Application
Secret information management scheme based on secret sharing scheme
- Publication number 20070160197
- Publication date Jul 12, 2007
- Makoto Kagaya
- G06 - COMPUTING CALCULATING COUNTING
Information Patent Application
Data division method and device using exclusive or calculation
- Publication number 20060072744
- Publication date Apr 6, 2006
- Toshihiko Ogihara
- H04 - ELECTRIC COMMUNICATION TECHNIQUE