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Fukuo Sekiya
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Tokorozawa, JA
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last 30 patents
Information
Patent Grant
Driver circuit for electrochromic display device
Patent number
4,096,412
Issue date
Jun 20, 1978
Citizen Watch Company, Limited
Fukuo Sekiya
G09 - EDUCATION CRYPTOGRAPHY DISPLAY ADVERTISING SEALS
Information
Patent Grant
Driver circuit for driving electrochromic display device
Patent number
4,074,256
Issue date
Feb 14, 1978
Citizen Watch Company Limited
Fukuo Sekiya
G09 - EDUCATION CRYPTOGRAPHY DISPLAY ADVERTISING SEALS
Information
Patent Grant
Electronic timepiece
Patent number
4,067,187
Issue date
Jan 10, 1978
Citizen Watch Co., Ltd.
Fukuo Sekiya
G04 - HOROLOGY
Information
Patent Grant
Method and apparatus for driving electrochromic display device
Patent number
4,060,974
Issue date
Dec 6, 1977
Citizen Watch Company Limited
Minoru Natori
G04 - HOROLOGY
Information
Patent Grant
Solid state binary logic signal source for electronic timepiece or...
Patent number
4,045,692
Issue date
Aug 30, 1977
Shigeru Morokawa
H03 - BASIC ELECTRONIC CIRCUITRY
Information
Patent Grant
Booster circuits
Patent number
4,016,476
Issue date
Apr 5, 1977
Citizen Watch Co., Ltd.
Shigeru Morokawa
H02 - GENERATION CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
Information
Patent Grant
Electronic device for detecting the energized state of a liquid cry...
Patent number
4,011,002
Issue date
Mar 8, 1977
Citizen Watch Co., Ltd.
Heihachiro Ebihara
G09 - EDUCATION CRYPTOGRAPHY DISPLAY ADVERTISING SEALS
Information
Patent Grant
Electronic device for monitoring power consumption of an electro-op...
Patent number
4,001,808
Issue date
Jan 4, 1977
Citizen Watch Co., Ltd.
Heihachiro Ebihara
G06 - COMPUTING CALCULATING COUNTING
Information
Patent Grant
Solid state binary logic signal source for electronic timepiece or...
Patent number
3,979,608
Issue date
Sep 7, 1976
Citizen Watch Co., Ltd.
Fukuo Sekiya
H03 - BASIC ELECTRONIC CIRCUITRY
Information
Patent Grant
Driving circuit for liquid-crystal display
Patent number
3,961,840
Issue date
Jun 8, 1976
Citizen Watch Co., Ltd.
Shigeru Morokawa
G09 - EDUCATION CRYPTOGRAPHY DISPLAY ADVERTISING SEALS
Information
Patent Grant
Portable miniature type information treating device
Patent number
3,937,004
Issue date
Feb 10, 1976
Citizen Watch Co., Ltd.
Minoru Natori
G06 - COMPUTING CALCULATING COUNTING