Michiko Takeuchi

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Tokyo-To, JP

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Patents Grantslast 30 patents

Information Patent Grant
Flat light source using light-diffusing sheet with projections thereon
- Patent number 5,944,405
- Issue date Aug 31, 1999
- Dai Nippon Printing Co., Ltd.
- Michiko Takeuchi
- G02 - OPTICS
Information Patent Grant
Lens array sheet, surface light source, and transmission type displ...
- Patent number 5,841,572
- Issue date Nov 24, 1998
- Dai Nippon Printing Co., Ltd.
- Rika Ando
- G02 - OPTICS
Information Patent Grant
Lens array sheet surface light source, and transmission type displa...
- Patent number 5,808,784
- Issue date Sep 15, 1998
- Dai Nippon Printing Co., Ltd.
- Rika Ando
- G02 - OPTICS
Information Patent Grant
Ionizing radiation-curable resin composition for optical article, o...
- Patent number 5,714,218
- Issue date Feb 3, 1998
- Dainippon Printing Co., Ltd.
- Toshikazu Nishio
- C08 - ORGANIC MACROMOLECULAR COMPOUNDS THEIR PREPARATION OR CHEMICAL WORKING-...
Information Patent Grant
Film lens and a surface light source using the same
- Patent number 5,598,280
- Issue date Jan 28, 1997
- Dai Nippon Printing Co., Ltd.
- Toshikazu Nishio
- G02 - OPTICS
Information Patent Grant
Renticular lens, surface light source, and liquid crystal display a...
- Patent number 5,592,332
- Issue date Jan 7, 1997
- Dai Nippon Printing Co., Ltd.
- Toshikazu Nishio
- G02 - OPTICS