Kenji Otoi

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Kawasaki-shi, JP

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Patents Grantslast 30 patents

Information Patent Grant
Flat plate and light guide plate
- Patent number 7,357,973
- Issue date Apr 15, 2008
- Nippon Zeon Co., Ltd.
- Kazuyuki Obuchi
- G02 - OPTICS
Information Patent Grant
Flat plate and light guide plate
- Patent number 6,828,007
- Issue date Dec 7, 2004
- Nippon Zeon Co., Ltd.
- Kazuyuki Obuchi
- G02 - OPTICS
Information Patent Grant
Contamination resistant cyclic olefin container
- Patent number 6,682,797
- Issue date Jan 27, 2004
- Nippon Zeon Co., Ltd.
- Kenji Otoi
- H01 - BASIC ELECTRIC ELEMENTS
Information Patent Grant
Thermoplastic dicyclopentadiene-base open-ring polymers, hydrogenat...
- Patent number 6,511,756
- Issue date Jan 28, 2003
- Nippon Zeon Co., Ltd.
- Kazuyuki Obuchi
- C08 - ORGANIC MACROMOLECULAR COMPOUNDS THEIR PREPARATION OR CHEMICAL WORKING-...
Information Patent Grant
Flat plate and light guide plate
- Patent number 6,497,939
- Issue date Dec 24, 2002
- Nippon Zeon Co., Ltd.
- Kazuyuki Obuchi
- G02 - OPTICS

Patents Applicationslast 30 patents

Information Patent Application
Flat plate and light guide plate
- Publication number 20050112329
- Publication date May 26, 2005
- NIPPON ZEON CO., LTD.
- Kazuyuki Obuchi
- G02 - OPTICS
Information Patent Application
Flat plate and light guide plate
- Publication number 20030059575
- Publication date Mar 27, 2003
- NIPPON ZEON CO., LTD.
- Kazuyuki Obuchi
- G02 - OPTICS