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Youichi Seki

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  • Yotsukaido, JP
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Patents Grantslast 30 patents

  • Information Patent Grant

    Analog-to-digital converter for camera
    • Patent number 5,097,262
    • Issue date Mar 17, 1992
    • Seikosha Co., Ltd.
    • Youichi Seki
    • G02 - OPTICS
  • Information Patent Grant

    Motor-driven shutter for camera
    • Patent number 5,060,000
    • Issue date Oct 22, 1991
    • Seikosha Co., Ltd.
    • Masuo Ogihara
    • G03 - PHOTOGRAPHY CINEMATOGRAPHY ELECTROGRAPHY HOLOGRAPHY
  • Information Patent Grant

    Motor-driven shutter for camera
    • Patent number 4,881,096
    • Issue date Nov 14, 1989
    • Seikosha Co., Ltd.
    • Masuo Ogihara
    • G03 - PHOTOGRAPHY CINEMATOGRAPHY ELECTROGRAPHY HOLOGRAPHY
  • Information Patent Grant

    Program shutter
    • Patent number 4,864,347
    • Issue date Sep 5, 1989
    • Seikosha Co., Ltd.
    • Tadashi Nakagawa
    • G03 - PHOTOGRAPHY CINEMATOGRAPHY ELECTROGRAPHY HOLOGRAPHY
  • Information Patent Grant

    Power circuit for camera
    • Patent number 4,831,406
    • Issue date May 16, 1989
    • Seikosha Co., Ltd.
    • Youichi Seki
    • G06 - COMPUTING CALCULATING COUNTING