Satoshi Kawachi

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Patents Grantslast 30 patents

Information Patent Grant
Integrated presence management system, presence server and presence...
- Patent number 8,005,942
- Issue date Aug 23, 2011
- Hitachi, Ltd.
- Hideya Yoshiuchi
- H04 - ELECTRIC COMMUNICATION TECHNIQUE

Patents Applicationslast 30 patents

Information Patent Application
Integrated presence management system, presence server and presence...
- Publication number 20060167998
- Publication date Jul 27, 2006
- Hitachi Communication Technologies, Ltd.
- Hideya Yoshiuchi
- H04 - ELECTRIC COMMUNICATION TECHNIQUE