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Toshihiko Koseki
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Yokohama, JP
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Patents Grants
last 30 patents
Information
Patent Grant
Liquid crystal display
Patent number
6,734,944
Issue date
May 11, 2004
International Business Machines Corporation
Toshihiko Koseki
G02 - OPTICS
Information
Patent Grant
Color filter and method of fabricating a color filter
Patent number
5,374,493
Issue date
Dec 20, 1994
International Business Machines Corporation
Tetsuya Fukunaga
G02 - OPTICS
Information
Patent Grant
Active matrix liquid crystal display device having two light shield...
Patent number
5,345,324
Issue date
Sep 6, 1994
International Business Machines Corporation
Toshihiko Koseki
G02 - OPTICS
Information
Patent Grant
Color liquid crystal display and method of manufacture
Patent number
5,229,039
Issue date
Jul 20, 1993
International Business Machines Corporation
Ayumi Ikeda
G02 - OPTICS
Information
Patent Grant
Liquid crystal display device and method of manufacture
Patent number
5,121,237
Issue date
Jun 9, 1992
International Business Machines Corporation
Ayumi Ikeda
G02 - OPTICS