Kiyohiko Ishikawa

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Tokyo, JP

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Patents Grantslast 30 patents

Information Patent Grant
Authentication apparatus, authentication method, and authentication...
- Patent number 8,726,356
- Issue date May 13, 2014
- Nippon Telegraph and Telephone Corporation
- Yuko Konya
- H04 - ELECTRIC COMMUNICATION TECHNIQUE
Information Patent Grant
Authentication system, authentication device and recording medium
- Patent number 8,484,470
- Issue date Jul 9, 2013
- Fujitsu Limited
- Hironori Sakakihara
- H04 - ELECTRIC COMMUNICATION TECHNIQUE
Information Patent Grant
Access control method, access control system, metadata controlling...
- Patent number 7,937,407
- Issue date May 3, 2011
- NEC Corporation
- Jun Goto
- G11 - INFORMATION STORAGE

Patents Applicationslast 30 patents

Information Patent Application
NODE APPARATUS AND COMPUTER-READABLE STORAGE MEDIUM FOR COMPUTER PR...
- Publication number 20110208828
- Publication date Aug 25, 2011
- FUJITSU LIMITED
- Hironori SAKAKIHARA
- G06 - COMPUTING CALCULATING COUNTING
Information Patent Application
AUTHENTICATION APPARATUS, AUTHENTICATION METHOD, AND AUTHENTICATION...
- Publication number 20110061098
- Publication date Mar 10, 2011
- NIPPON TELEGRAPH AND TELEPHONE CORP.
- Yuko Konya
- G06 - COMPUTING CALCULATING COUNTING
Information Patent Application
AUTHENTICATION SYSTEM, AUTHENTICATION DEVICE AND RECORDING MEDIUM
- Publication number 20100281521
- Publication date Nov 4, 2010
- FUJITSU LIMITED
- Hironori SAKAKIHARA
- G06 - COMPUTING CALCULATING COUNTING
Information Patent Application
ENCRYPTION APPARATUS, DECRYPTION APPARATUS, LICENSING APPARATUS AND...
- Publication number 20100002876
- Publication date Jan 7, 2010
- Kyocera Corporation
- Shuuichi Sugie
- H04 - ELECTRIC COMMUNICATION TECHNIQUE
Information Patent Application
Access control method, access control system, metadata controlling...
- Publication number 20070277245
- Publication date Nov 29, 2007
- Jun Goto
- H04 - ELECTRIC COMMUNICATION TECHNIQUE