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Kozo Oka

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  • Minami-ashigara, JP
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Patents Grantslast 30 patents

  • Information Patent Grant

    Charging roll for electrophotography
    • Patent number 5,576,806
    • Issue date Nov 19, 1996
    • Fuji Xerox Co., Ltd.
    • Kozo Oka
    • G03 - PHOTOGRAPHY CINEMATOGRAPHY ELECTROGRAPHY HOLOGRAPHY
  • Information Patent Grant

    Charge roll for electrophotography
    • Patent number 5,529,842
    • Issue date Jun 25, 1996
    • Fuji Xerox Co., Ltd.
    • Taketoshi Hoshizaki
    • G03 - PHOTOGRAPHY CINEMATOGRAPHY ELECTROGRAPHY HOLOGRAPHY
  • Information Patent Grant

    Electrostatic printing method
    • Patent number 4,634,257
    • Issue date Jan 6, 1987
    • Fuji Xerox Co., Ltd.
    • Masaki Yoshino
    • G03 - PHOTOGRAPHY CINEMATOGRAPHY ELECTROGRAPHY HOLOGRAPHY
  • Information Patent Grant

    Electrostatic printing method
    • Patent number 4,443,093
    • Issue date Apr 17, 1984
    • Fuji Xerox Co., Ltd.
    • Masaki Yoshino
    • G03 - PHOTOGRAPHY CINEMATOGRAPHY ELECTROGRAPHY HOLOGRAPHY
  • Information Patent Grant

    Electrophotographic light-sensitive element
    • Patent number 4,409,309
    • Issue date Oct 11, 1983
    • Fuji Xerox Co., Ltd.
    • Kozo Oka
    • G03 - PHOTOGRAPHY CINEMATOGRAPHY ELECTROGRAPHY HOLOGRAPHY
  • Information Patent Grant

    Electrophotographic process
    • Patent number 4,197,119
    • Issue date Apr 8, 1980
    • Fuji Xerox Co., Ltd.
    • Shigeru Sadamatsu
    • G03 - PHOTOGRAPHY CINEMATOGRAPHY ELECTROGRAPHY HOLOGRAPHY
  • Information Patent Grant

    Layered photoconductive element having As and/or Te doped with Ga,...
    • Patent number 4,170,476
    • Issue date Oct 9, 1979
    • Fuji Xerox Co., Ltd.
    • Shigeru Sadamatsu
    • G03 - PHOTOGRAPHY CINEMATOGRAPHY ELECTROGRAPHY HOLOGRAPHY