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Etsuo Yamamoto
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Tokyo, JP
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last 30 patents
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Patent Grant
Matrix display panel having a diode ring structure as a resistive e...
Patent number
4,748,445
Issue date
May 31, 1988
Citizen Watch Co., Ltd.
Seigo Togashi
G09 - EDUCATION CRYPTOGRAPHY DISPLAY ADVERTISING SEALS
Information
Patent Grant
Method of making a liquid crystal display with color filters
Patent number
4,673,253
Issue date
Jun 16, 1987
Citizen Watch Co., Ltd.
Hiroshi Tanabe
G02 - OPTICS
Information
Patent Grant
Flat panel display device having on-screen data input function
Patent number
4,655,552
Issue date
Apr 7, 1987
Citizen Watch Co., Ltd.
Seigo Togashi
G06 - COMPUTING CALCULATING COUNTING
Information
Patent Grant
Liquid crystal color display panels
Patent number
4,610,509
Issue date
Sep 9, 1986
Citizen Watch Co., Ltd.
Kazuaki Sorimachi
G02 - OPTICS