Kazuhiko Otsuka

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Saitama, JP

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Patents Grantslast 30 patents

Information Patent Grant
Fuel cell and electronic apparatus with the same mounted thereon
- Patent number 8,101,311
- Issue date Jan 24, 2012
- Sony Corporation
- Yasuhiro Watanabe
- Y02 - TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMA...
Information Patent Grant
Power generation unit and fuel cell
- Patent number 7,547,485
- Issue date Jun 16, 2009
- Sony Corporation
- Kazuhiko Otsuka
- Y02 - TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMA...
Information Patent Grant
Method of and apparatus for welding spring to aperture grill
- Patent number 5,692,941
- Issue date Dec 2, 1997
- Sony Corporation
- Masami Takeda
- H01 - BASIC ELECTRIC ELEMENTS

Patents Applicationslast 30 patents

Information Patent Application
Fuel cell and electronic equipment mounting it
- Publication number 20050255340
- Publication date Nov 17, 2005
- Yasuhiro Watanabe
- Y02 - TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMA...
Information Patent Application
Power generation unit and fuel cell
- Publication number 20050191540
- Publication date Sep 1, 2005
- SONY CORPORATION
- Kazuhiko Otsuka
- Y02 - TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMA...