Hirofumi Yasuda

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Suwa, JP

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Patents Grantslast 30 patents

Information Patent Grant
Semiconductor device having an inter-layer insulating film disposed...
- Patent number 5,612,557
- Issue date Mar 18, 1997
- Seiko Epson Corporation
- Toshihiko Kondo
- G11 - INFORMATION STORAGE
Information Patent Grant
Semiconductor memory device
- Patent number 5,345,420
- Issue date Sep 6, 1994
- Seiko Epson Corporation
- Hirofumi Yasuda
- G11 - INFORMATION STORAGE
Information Patent Grant
Sense amplifier for semiconductor memory device
- Patent number 5,260,899
- Issue date Nov 9, 1993
- Seiko Epson Corporation
- Hirofumi Yasuda
- G11 - INFORMATION STORAGE
Information Patent Grant
Semiconductor device having an inter-layer insulating film disposed...
- Patent number 5,191,402
- Issue date Mar 2, 1993
- Seiko Epson Corporation
- Toshihiko Kondo
- G11 - INFORMATION STORAGE
Information Patent Grant
Semiconductor memory device
- Patent number 5,101,380
- Issue date Mar 31, 1992
- Seiko Epson Corporation
- Hirofumi Yasuda
- G11 - INFORMATION STORAGE
Information Patent Grant
Semiconductor memory device
- Patent number 4,931,996
- Issue date Jun 5, 1990
- Seiko Epson Corporation
- Hirofumi Yasuda
- G11 - INFORMATION STORAGE
Information Patent Grant
Electronic timepiece utilizing semiconductor-insulating substrate i...
- Patent number 4,106,278
- Issue date Aug 15, 1978
- Kabushiki Kaisha Suwa Seikosha
- Hirofumi Yasuda
- G04 - HOROLOGY

Patents Applicationslast 30 patents

Information Patent Application
Circuit electron emission element, method of manufacturing electron...
- Publication number 20060170322
- Publication date Aug 3, 2006
- Seiko Epson Corporation
- Hirofumi Yasuda
- H01 - BASIC ELECTRIC ELEMENTS