Shigefumi Sakai

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Miyagi-ken, JP

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Patents Grantslast 30 patents

Information Patent Grant
Capacitive pressure sensor
- Patent number 7,319,581
- Issue date Jan 15, 2008
- Alps Electric Co., Ltd.
- Toshihide Suto
- G01 - MEASURING TESTING
Information Patent Grant
Pressure sensor
- Patent number 7,135,749
- Issue date Nov 14, 2006
- Alps Electric Co., Ltd.
- Shigefumi Sakai
- G01 - MEASURING TESTING

Patents Applicationslast 30 patents

Information Patent Application
Capacitive pressure sensor
- Publication number 20060133006
- Publication date Jun 22, 2006
- Alps Electric Co., Ltd.
- Toshihide Suto
- G01 - MEASURING TESTING
Information Patent Application
Pressure sensor
- Publication number 20050156241
- Publication date Jul 21, 2005
- Alps Electric Co., Ltd.
- Shigefumi Sakai
- G01 - MEASURING TESTING
Information Patent Application
Multilayer film optical filter, method of producing the same, and o...
- Publication number 20040207921
- Publication date Oct 21, 2004
- Alps Electric Co., Ltd.
- Hitoshi Kitagawa
- G02 - OPTICS
Information Patent Application
Multilayer film optical filter, method of producing the same, and o...
- Publication number 20030142407
- Publication date Jul 31, 2003
- Alps Electric Co., Ltd.
- Hitoshi Kitagawa
- G02 - OPTICS