Hidefumi Yamaguchi

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Fujisawa, JP

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Patents Grantslast 30 patents

Information Patent Grant
Liquid crystal display apparatus and method and apparatus for drivi...
- Patent number 5,438,342
- Issue date Aug 1, 1995
- International Business Machines Corporation
- Hidefumi Yamaguchi
- G09 - EDUCATION CRYPTOGRAPHY DISPLAY ADVERTISING SEALS
Information Patent Grant
Liquid crystal display having reduced flicker
- Patent number 5,253,091
- Issue date Oct 12, 1993
- International Business Machines Corporation
- Shinichi Kimura
- G09 - EDUCATION CRYPTOGRAPHY DISPLAY ADVERTISING SEALS
Information Patent Grant
Liquid crystal display having proportional TFT channel width
- Patent number 5,235,448
- Issue date Aug 10, 1993
- International Business Machines Corporation
- Hiroshi Suzuki
- G09 - EDUCATION CRYPTOGRAPHY DISPLAY ADVERTISING SEALS
Information Patent Grant
Arrangement of picture elements for color display
- Patent number 4,986,637
- Issue date Jan 22, 1991
- International Business Machines Corporation
- Hidefumi Yamaguchi
- G02 - OPTICS
Information Patent Grant
Deflection distortion correcting circuit
- Patent number 4,501,996
- Issue date Feb 26, 1985
- International Business Machines Corporation
- Hidefumi Yamaguchi
- H04 - ELECTRIC COMMUNICATION TECHNIQUE