Kenji Kawaguchi

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Chigasaki, JP

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Patents Grantslast 30 patents

Information Patent Grant
Multi-user talking system and multi-user talking method
- Patent number 7,146,629
- Issue date Dec 5, 2006
- Hitachi, Ltd.
- Koji Tsukada
- H04 - ELECTRIC COMMUNICATION TECHNIQUE
Information Patent Grant
Network connecting method and device
- Patent number 6,714,532
- Issue date Mar 30, 2004
- Hitachi, Ltd.
- Kenji Kawaguchi
- H04 - ELECTRIC COMMUNICATION TECHNIQUE
Information Patent Grant
Management system for updating network managed by physical manager...
- Patent number 5,764,911
- Issue date Jun 9, 1998
- Hitachi, Ltd.
- Satoru Tezuka
- H04 - ELECTRIC COMMUNICATION TECHNIQUE
Information Patent Grant
ATM switch
- Patent number 5,729,530
- Issue date Mar 17, 1998
- Hitachi, Ltd.
- Kenji Kawaguchi
- H04 - ELECTRIC COMMUNICATION TECHNIQUE

Patents Applicationslast 30 patents

Information Patent Application
Multi-user talking system and multi-user talking method
- Publication number 20020057335
- Publication date May 16, 2002
- Koji Tsukada
- H04 - ELECTRIC COMMUNICATION TECHNIQUE
Information Patent Application
Closed group communication method and communication terminal equipment
- Publication number 20020037736
- Publication date Mar 28, 2002
- Kenji Kawaguchi
- H04 - ELECTRIC COMMUNICATION TECHNIQUE