Tsuyoshi Kawanabe

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Yokohama, JP

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Patents Grantslast 30 patents

Information Patent Grant
Portable device settable in a host apparatus and combined system th...
- Patent number 5,602,652
- Issue date Feb 11, 1997
- Masumi Ishiwatari
- H04 - ELECTRIC COMMUNICATION TECHNIQUE
Information Patent Grant
System utilizing portable device
- Patent number 5,283,820
- Issue date Feb 1, 1994
- Canon Kabushiki Kaisha
- Masumi Ishiwatari
- H04 - ELECTRIC COMMUNICATION TECHNIQUE
Information Patent Grant
Communication apparatus used with a card-like device
- Patent number 5,239,386
- Issue date Aug 24, 1993
- Canon Kabushiki Kaisha
- Masumi Ishiwatari
- H04 - ELECTRIC COMMUNICATION TECHNIQUE