Tachibana Sadao

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Patents Grantslast 30 patents

Information Patent Grant
Keyboard unit and key switch
- Patent number 5,914,468
- Issue date Jun 22, 1999
- Oki Electric Industry Co. Ltd.
- Takashi Nishimura
- H01 - BASIC ELECTRIC ELEMENTS
Information Patent Grant
Keyboard switch and method of manufacturing the same
- Patent number 5,256,843
- Issue date Oct 26, 1993
- Oki Electric Industry Co., Ltd.
- Toshimi Chiba
- H01 - BASIC ELECTRIC ELEMENTS
Information Patent Grant
Spring-biased push-button switch having a spring-loaded tactile fee...
- Patent number 4,927,990
- Issue date May 22, 1990
- Oki Electric Industry Co., Ltd.
- Kazuo Aoki
- H01 - BASIC ELECTRIC ELEMENTS
Information Patent Grant
Luminous element holding structure for an illuminated key switch
- Patent number 4,874,913
- Issue date Oct 17, 1989
- Oki Electric Industry Co., Ltd.
- Kazuo Aoki
- H01 - BASIC ELECTRIC ELEMENTS
Information Patent Grant
Keyboard
- Patent number 4,851,618
- Issue date Jul 25, 1989
- Oki Electric Industry Co., Ltd.
- Fumihiro Amino
- H01 - BASIC ELECTRIC ELEMENTS
Information Patent Grant
Keyboard of a membrane contact type
- Patent number 4,837,412
- Issue date Jun 6, 1989
- Oki Electric Industry Co., Ltd.
- Sadao Tachibana
- H01 - BASIC ELECTRIC ELEMENTS
Information Patent Grant
Push button switch
- Patent number 4,755,645
- Issue date Jul 5, 1988
- Oki Electric Industry Co., Ltd.
- Kunimine Naoki
- H01 - BASIC ELECTRIC ELEMENTS