Isao Shimbo

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Yokohama, JP

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Patents Grantslast 30 patents

Information Patent Grant
Portable telephone system
- Patent number 5,838,770
- Issue date Nov 17, 1998
- Hitachi, Ltd.
- Yutaka Fukushima
- H04 - ELECTRIC COMMUNICATION TECHNIQUE
Information Patent Grant
Portable telephone system
- Patent number 5,579,370
- Issue date Nov 26, 1996
- Hitachi, Ltd.
- Yutaka Fukushima
- H04 - ELECTRIC COMMUNICATION TECHNIQUE
Information Patent Grant
Mobile communication system and location registration method in mob...
- Patent number 5,379,451
- Issue date Jan 3, 1995
- Hitachi, Ltd.
- Arata Nakagoshi
- H04 - ELECTRIC COMMUNICATION TECHNIQUE