Katsumi Aota

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Tokyo, JP

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Patents Grantslast 30 patents

Information Patent Grant
Liquid crystal display device
- Patent number 7,136,138
- Issue date Nov 14, 2006
- Citizen Watch Co., Ltd.
- Kanetaka Sekiguchi
- G02 - OPTICS
Information 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