Yasuo Hanawa

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Katsuta, JP

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Patents Grantslast 30 patents

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Liquid crystal polyimide alignment free of scattering domains
- Patent number RE34885
- Issue date Mar 28, 1995
- Hitachi, Ltd.
- Hisao Yokokura
- 252 - Compositions
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Ferroelectric liquid crystal device
- Patent number 5,020,883
- Issue date Jun 4, 1991
- Hitachi, Ltd.
- Susumu Era
- G02 - OPTICS
Information Patent Grant
Liquid crystal polyimide alignment free of scattering domains
- Patent number 4,781,439
- Issue date Nov 1, 1988
- Hitachi, Ltd.
- Hisao Yokokura
- C08 - ORGANIC MACROMOLECULAR COMPOUNDS THEIR PREPARATION OR CHEMICAL WORKING-...
Information Patent Grant
Ferroelectric liquid crystal element with particular alignment film...
- Patent number 4,759,614
- Issue date Jul 26, 1988
- Hitachi, Ltd.
- Hisao Yokokura
- G02 - OPTICS
Information Patent Grant
Liquid crystal display device
- Patent number 4,733,949
- Issue date Mar 29, 1988
- Hitachi, Ltd.
- Hidetoshi Abe
- C09 - DYES PAINTS POLISHES NATURAL RESINS ADHESIVES MISCELLANEOUS COMPOSITION...