Kazuhiro Yakoyama

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Fukushima-ken, JP

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Patents Grantslast 30 patents

Information Patent Grant
Key-switch device corresponding to miniaturized notebook-size perso...
- Patent number 6,909,062
- Issue date Jun 21, 2005
- Alps Electric Co., Ltd.
- Tsuyoshi Narusawa
- H01 - BASIC ELECTRIC ELEMENTS
Information Patent Grant
Key-switch device corresponding to miniaturized notebook-size perso...
- Patent number 6,777,634
- Issue date Aug 17, 2004
- Alps Electric Co., Ltd.
- Tsuyoshi Narusawa
- H01 - BASIC ELECTRIC ELEMENTS

Patents Applicationslast 30 patents

Information Patent Application
Key-switch device corresponding to miniaturized notebook-size perso...
- Publication number 20040195081
- Publication date Oct 7, 2004
- Tsuyoshi Narusawa
- H01 - BASIC ELECTRIC ELEMENTS
Information Patent Application
Key-switch device corresponding to miniaturized notebook-size perso...
- Publication number 20020148712
- Publication date Oct 17, 2002
- Alps Electric Co., Ltd.
- Tsuyoshi Narusawa
- H01 - BASIC ELECTRIC ELEMENTS