Yasumasa Okada

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Inukami-gun, JP

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Patents Grantslast 30 patents

Information Patent Grant
Protecting film for polarizing plate and polarizing plate
- Patent number 6,808,811
- Issue date Oct 26, 2004
- Sekisui Chemical Co., Ltd.
- Takahiko Sawada
- C08 - ORGANIC MACROMOLECULAR COMPOUNDS THEIR PREPARATION OR CHEMICAL WORKING-...
Information Patent Grant
Polarizer protection film
- Patent number 6,552,145
- Issue date Apr 22, 2003
- Sekisui Chemical Co., Ltd.
- Yasumasa Okada
- G02 - OPTICS

Patents Applicationslast 30 patents

Information Patent Application
Polarizer protection film
- Publication number 20030063237
- Publication date Apr 3, 2003
- SEKISUI CHEMICAL CO., LTD.
- Yasumasa Okada
- G02 - OPTICS
Information Patent Application
Optical film, method of manufacture thereof and sheet polarizer
- Publication number 20030031848
- Publication date Feb 13, 2003
- Takahiko Sawada
- B29 - WORKING OF PLASTICS WORKING OF SUBSTANCES IN A PLASTIC STATE, IN GENERAL