Yosinori Hirai

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Yokohama, JP

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Patents Grantslast 30 patents

Information Patent Grant
Liquid crystal display device with a 50.degree.-80.degree. twist angle
- Patent number 4,952,030
- Issue date Aug 28, 1990
- Asahi Glass Company, Ltd.
- Yutaka Nakagawa
- G02 - OPTICS