Katsuyuki Okeya

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Yokohama, JP

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Patents Grantslast 30 patents

Information Patent Grant
Method and system for contents control
- Patent number 7,478,432
- Issue date Jan 13, 2009
- Hitachi, Ltd.
- Isao Echizen
- H04 - ELECTRIC COMMUNICATION TECHNIQUE

Patents Applicationslast 30 patents

Information Patent Application
Method and system for contents control
- Publication number 20020188840
- Publication date Dec 12, 2002
- Isao Echizen
- H04 - ELECTRIC COMMUNICATION TECHNIQUE