Masahiko Okamoto

Follow

Person

Osaka, JP

People

Patents Grantslast 30 patents

Information Patent Grant
Polarizing optical composite and polarizing lens
- Patent number 6,613,433
- Issue date Sep 2, 2003
- Yamamoto Kogaku Co., Ltd.
- Tamenobu Yamamoto
- G02 - OPTICS
Information Patent Grant
Transparent optical article
- Patent number 6,455,163
- Issue date Sep 24, 2002
- Yamamoto Kogaku Co., Ltd.
- Masahiko Okamoto
- B32 - LAYERED PRODUCTS
Information Patent Grant
Method and apparatus for manufacturing lenses and a lens manufactur...
- Patent number 6,165,392
- Issue date Dec 26, 2000
- Yamamoto Kogaku Kabushiki Kaisha
- Nobuyuki Kobuchi
- B29 - WORKING OF PLASTICS WORKING OF SUBSTANCES IN A PLASTIC STATE, IN GENERAL
Information Patent Grant
Composite molded article including a polarizer of polycarbonate
- Patent number 5,702,813
- Issue date Dec 30, 1997
- Yamamoto Kogaku Co., Ltd.
- Oritoshi Murata
- B32 - LAYERED PRODUCTS

Patents Applicationslast 30 patents

Information Patent Application
Liquid Chromatograph
- Publication number 20080044309
- Publication date Feb 21, 2008
- Sumitomo Chemical Company, Limited
- Kazuko Yamashita
- G01 - MEASURING TESTING
Information Patent Application
TRANSPARENT OPTICAL ARTICLE
- Publication number 20020136897
- Publication date Sep 26, 2002
- Masahiko Okamoto
- B32 - LAYERED PRODUCTS
Information Patent Application
Polarizing optical composite and polarizing lens
- Publication number 20020044352
- Publication date Apr 18, 2002
- YAMAMOTO KOGAKU CO., LTD.
- Tamenobu Yamamoto
- G02 - OPTICS