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last 30 patents
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Patent Grant
Process for producing toner for electrophotography
Patent number
5,066,560
Issue date
Nov 19, 1991
Hitachi Chemical Company, Ltd.
Ryoji Tan
G03 - PHOTOGRAPHY CINEMATOGRAPHY ELECTROGRAPHY HOLOGRAPHY
Information
Patent Grant
Process for producing toner for electrophotography
Patent number
4,983,488
Issue date
Jan 8, 1991
Hitachi Chemical Co., Ltd.
Ryoji Tan
G03 - PHOTOGRAPHY CINEMATOGRAPHY ELECTROGRAPHY HOLOGRAPHY
Information
Patent Grant
Liquid developer for electro photography
Patent number
4,156,034
Issue date
May 22, 1979
Hitachi, Ltd.
Akio Mukoh
G03 - PHOTOGRAPHY CINEMATOGRAPHY ELECTROGRAPHY HOLOGRAPHY