Takatoshi Sagawa

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Yokohama, JP

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Patents Grantslast 30 patents

Information Patent Grant
Light-shader
- Patent number 4,772,096
- Issue date Sep 20, 1988
- Nissan Motor Company, Limited
- Yasuaki Kai
- G09 - EDUCATION CRYPTOGRAPHY DISPLAY ADVERTISING SEALS
Information Patent Grant
Directional light-shield board
- Patent number 4,709,988
- Issue date Dec 1, 1987
- Nissan Motor Co., Ltd.
- Yasuaki Kai
- G02 - OPTICS