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Hisao Fujita

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  • Hachioji, JP
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Patents Grantslast 30 patents

  • Information Patent Grant

    Object lens and optical head for reproducing data from optical disk...
    • Patent number 5,889,748
    • Issue date Mar 30, 1999
    • Hitachi, Ltd.
    • Takeshi Shimano
    • G11 - INFORMATION STORAGE
  • Information Patent Grant

    Image recording apparatus
    • Patent number 4,926,195
    • Issue date May 15, 1990
    • Konica Corporation
    • Takashi Murahashi
    • G02 - OPTICS
  • Information Patent Grant

    Scanning optical system
    • Patent number 4,802,721
    • Issue date Feb 7, 1989
    • Konishiroku Photo Industry Co., Ltd.
    • Hisao Fujita
    • G02 - OPTICS
  • Information Patent Grant

    Wide angle lens
    • Patent number 4,767,201
    • Issue date Aug 30, 1988
    • Konishiroku Photo Industry Co., Ltd.
    • Hisao Fujita
    • G02 - OPTICS
  • Information Patent Grant

    Wide angle lens
    • Patent number 4,688,903
    • Issue date Aug 25, 1987
    • Konishiroku Photo Industry Co., Ltd.
    • Hisao Fujita
    • G02 - OPTICS
  • Information Patent Grant

    Zoom lens
    • Patent number 4,501,475
    • Issue date Feb 26, 1985
    • Konishiroku Photo Industry Co., Ltd.
    • Hisao Fujita
    • G02 - OPTICS
  • Information Patent Grant

    Apparatus for detecting toner density
    • Patent number 4,276,854
    • Issue date Jul 7, 1981
    • Konishiroku Photo Industry Co., Ltd.
    • Hisao Fujita
    • G03 - PHOTOGRAPHY CINEMATOGRAPHY ELECTROGRAPHY HOLOGRAPHY
  • Information Patent Grant

    Method of detecting toner concentration in electrophotographic copy...
    • Patent number 4,273,843
    • Issue date Jun 16, 1981
    • Konishiroku Photo Industry Co., Ltd.
    • Hisao Fujita
    • G03 - PHOTOGRAPHY CINEMATOGRAPHY ELECTROGRAPHY HOLOGRAPHY