Hiroshi Shimizu

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Kawagoe, JP

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Patents Grantslast 30 patents

Information Patent Grant
Liquid crystal matrix display panel drive method
- Patent number 4,645,303
- Issue date Feb 24, 1987
- Citizen Watch Co., Ltd.
- Fukuo Sekiya
- G09 - EDUCATION CRYPTOGRAPHY DISPLAY ADVERTISING SEALS
Information Patent Grant
Liquid crystal color display cell
- Patent number 4,257,682
- Issue date Mar 24, 1981
- Citizen Watch Co., Ltd.
- Takaharu Suzuki
- G02 - OPTICS