Toko Ohtsubo

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Yokohama, JP

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Patents Grantslast 30 patents

Information Patent Grant
Equipment and method for interactive testing and simulating of a sp...
- Patent number 5,335,339
- Issue date Aug 2, 1994
- Hitachi, Ltd.
- Yukihito Maejima
- G06 - COMPUTING CALCULATING COUNTING
Information Patent Grant
Method of telephone call wherein status data inhibits calls and ind...
- Patent number 4,969,182
- Issue date Nov 6, 1990
- Hitachi, Ltd.
- Toko Ohtsubo
- H04 - ELECTRIC COMMUNICATION TECHNIQUE