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Kei Takahata
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Kusatsu, JP
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last 30 patents
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Patent Grant
Multicolor electrophotographic process using TiO.sub.2
Patent number
4,525,441
Issue date
Jun 25, 1985
Ishihara Sangyo Kaisha, Ltd.
Kei Takahata
G03 - PHOTOGRAPHY CINEMATOGRAPHY ELECTROGRAPHY HOLOGRAPHY
Information
Patent Grant
Dye sensitized titanium dioxide electrophotographic photosensitive...
Patent number
4,386,146
Issue date
May 31, 1983
Ishihara Sangyo Kaisha, Ltd.
Shigeru Kishino
G03 - PHOTOGRAPHY CINEMATOGRAPHY ELECTROGRAPHY HOLOGRAPHY
Information
Patent Grant
Doped TiO.sub.2 electrophotographic photosensitive materials
Patent number
4,150,986
Issue date
Apr 24, 1979
Ishihara Sangyo Kaisha, Ltd.
Kei Takahata
G03 - PHOTOGRAPHY CINEMATOGRAPHY ELECTROGRAPHY HOLOGRAPHY
Information
Patent Grant
Liquid developer
Patent number
4,144,184
Issue date
Mar 13, 1979
Ishihara Sangyo Kaisha, Ltd.
Kei Takahata
G03 - PHOTOGRAPHY CINEMATOGRAPHY ELECTROGRAPHY HOLOGRAPHY