Shigeharu Onuma

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Hitachi, JP

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Patents Grantslast 30 patents

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Electrophotographic photosensitive element comprising a protective...
- Patent number 5,204,202
- Issue date Apr 20, 1993
- Hitachi, Ltd.
- Fuminori Ishikawa
- G03 - PHOTOGRAPHY CINEMATOGRAPHY ELECTROGRAPHY HOLOGRAPHY
Information Patent Grant
Electrophotographic member containing a fluorine-containing lubrica...
- Patent number 5,073,466
- Issue date Dec 17, 1991
- Hitachi, Ltd.
- Fuminori Ishikawa
- G03 - PHOTOGRAPHY CINEMATOGRAPHY ELECTROGRAPHY HOLOGRAPHY
Information Patent Grant
Multilayered electrophotographic photosensitive member
- Patent number 4,791,040
- Issue date Dec 13, 1988
- Hitachi Ltd.
- Makoto Fujikura
- G03 - PHOTOGRAPHY CINEMATOGRAPHY ELECTROGRAPHY HOLOGRAPHY
Information Patent Grant
Electrophotographic photosensitive material having thin amorphous s...
- Patent number 4,430,404
- Issue date Feb 7, 1984
- Hitachi, Ltd.
- Akira Hosoya
- G03 - PHOTOGRAPHY CINEMATOGRAPHY ELECTROGRAPHY HOLOGRAPHY
Information Patent Grant
Electrophotographic plate having an age-hardened aluminum substrate...
- Patent number 4,405,703
- Issue date Sep 20, 1983
- Hitachi, Ltd.
- Shigeharu Onuma
- G03 - PHOTOGRAPHY CINEMATOGRAPHY ELECTROGRAPHY HOLOGRAPHY