Yoji Shimizu

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Tokyo, JP

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Patents Grantslast 30 patents

Information Patent Grant
Encrypting device, decrypting device, information system, encryptin...
- Patent number 8,094,824
- Issue date Jan 10, 2012
- Hitachi, Ltd.
- Yasuo Hatano
- H04 - ELECTRIC COMMUNICATION TECHNIQUE
Information Patent Grant
Digital content encryption and decryption method and workflow syste...
- Patent number 7,840,487
- Issue date Nov 23, 2010
- Hitachi, Ltd.
- Yasuo Hatano
- H04 - ELECTRIC COMMUNICATION TECHNIQUE

Patents Applicationslast 30 patents

Information Patent Application
ID MANAGEMENT METHOD, ID MANAGEMENT SYSTEM, AND COMPUTER-READABLE R...
- Publication number 20110231364
- Publication date Sep 22, 2011
- Hitachi, Ltd.
- Hiromi HASHIMOTO
- G06 - COMPUTING CALCULATING COUNTING
Information Patent Application
ENCRYPTION APPARATUS, DECRYPTION APPARATUS, AND CRYPTOGRAPHY SYSTEM
- Publication number 20090116643
- Publication date May 7, 2009
- Yasuo Hatano
- H04 - ELECTRIC COMMUNICATION TECHNIQUE
Information Patent Application
Encrypting Device, Decrypting Device, Information System, Encryptin...
- Publication number 20080063191
- Publication date Mar 13, 2008
- YASUO HATANO
- G06 - COMPUTING CALCULATING COUNTING
Information Patent Application
Digital content encryption and decryption method and workflow syste...
- Publication number 20070219915
- Publication date Sep 20, 2007
- Yasuo Hatano
- H04 - ELECTRIC COMMUNICATION TECHNIQUE