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Yasuo Arikawa
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Suwa, JP
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last 30 patents
Information
Patent Grant
Display device and electronic watch
Patent number
6,519,209
Issue date
Feb 11, 2003
Seiko Epson Corporation
Yasuo Arikawa
G02 - OPTICS
Information
Patent Grant
Display device having a light emitting element
Patent number
6,437,840
Issue date
Aug 20, 2002
Seiko Epson Corporation
Yasuo Arikawa
G02 - OPTICS
Information
Patent Grant
Display device and electronic timepiece
Patent number
6,385,139
Issue date
May 7, 2002
Seiko Epson Corporation
Yasuo Arikawa
G02 - OPTICS
Information
Patent Grant
Display device and electronic watch using the device
Patent number
6,229,767
Issue date
May 8, 2001
Seiko Epson Corporation
Eiichi Miyazawa
G02 - OPTICS
Information
Patent Grant
Electronic timepiece
Patent number
6,201,770
Issue date
Mar 13, 2001
Seiko Epson Corporation
Yasuo Arikawa
G02 - OPTICS
Information
Patent Grant
Display device and electronic timepiece
Patent number
6,185,161
Issue date
Feb 6, 2001
Seiko Epson Corporation
Yasuo Arikawa
G02 - OPTICS
Information
Patent Grant
Display device and electronic timepiece
Patent number
6,147,937
Issue date
Nov 14, 2000
Seiko Epson Corporation
Yasuo Arikawa
G02 - OPTICS
Information
Patent Grant
Display device and electronic watch
Patent number
6,147,934
Issue date
Nov 14, 2000
Seiko Epson Corporation
Yasuo Arikawa
G02 - OPTICS
Information
Patent Grant
Pressure measuring device and method using quartz resonators
Patent number
5,546,810
Issue date
Aug 20, 1996
Seiko Epson Corporation
Yasuo Arikawa
G01 - MEASURING TESTING