Yohichi Ogawa

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Kanagawa, JP

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Patents Grantslast 30 patents

Information Patent Grant
Private network system and method of transferring an incoming call
- Patent number 5,761,620
- Issue date Jun 2, 1998
- Hitachi, Ltd.
- Tsuneo Furuya
- H04 - ELECTRIC COMMUNICATION TECHNIQUE
Information Patent Grant
Call charging method in radio telephone system and radio telephone...
- Patent number 5,521,968
- Issue date May 28, 1996
- Hitachi, Ltd.
- Tsuneo Furuya
- H04 - ELECTRIC COMMUNICATION TECHNIQUE
Information Patent Grant
Private radio system for delivering incoming calls to a mobile subs...
- Patent number 5,479,483
- Issue date Dec 26, 1995
- Hitachi, Ltd.
- Tsuneo Furuya
- H04 - ELECTRIC COMMUNICATION TECHNIQUE
Information Patent Grant
Call charging method in radio telephone system and radio telephone...
- Patent number 5,425,083
- Issue date Jun 13, 1995
- Hitachi, Ltd.
- Tsuneo Furuya
- H04 - ELECTRIC COMMUNICATION TECHNIQUE
Information Patent Grant
Intermittenceless switching system
- Patent number 5,353,281
- Issue date Oct 4, 1994
- Kokusai Electric Co., Ltd.
- Hiroshi Kuwahara
- H04 - ELECTRIC COMMUNICATION TECHNIQUE