Kazuhiko Hanawa

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Yokohama, JP

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Patents Grantslast 30 patents

Information Patent Grant
ATM communication system
- Patent number 5,274,641
- Issue date Dec 28, 1993
- Kabushiki Kaisha Toshiba
- Yasuro Shobatake
- H04 - ELECTRIC COMMUNICATION TECHNIQUE
Information Patent Grant
Automatic telephone exchange system for both speech signals and dat...
- Patent number 4,330,886
- Issue date May 18, 1982
- Tokyo Shibaura Electric Co., Ltd.
- Takeo Fukuda
- H04 - ELECTRIC COMMUNICATION TECHNIQUE
Information Patent Grant
Interfacing circuit status detection arrangement in a telephone exc...
- Patent number 4,297,532
- Issue date Oct 27, 1981
- Tokyo Shibaura Denki Kabushiki Kaisha
- Takeo Fukuda
- H04 - ELECTRIC COMMUNICATION TECHNIQUE
Information Patent Grant
Switching apparatus selectively utilizing a regenerative repeater
- Patent number 4,215,251
- Issue date Jul 29, 1980
- Tokyo Shibaura Electric Co., Ltd.
- Takeo Fukuda
- H04 - ELECTRIC COMMUNICATION TECHNIQUE