TREA

Takehiko Ohniwa

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  • Chichibu, JP
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Patents Grantslast 30 patents

  • Information Patent Grant

    Electromagnetic release shutter
    • Patent number 4,364,654
    • Issue date Dec 21, 1982
    • Canon Kabushiki Kaisha
    • Michio Senuma
    • G03 - PHOTOGRAPHY CINEMATOGRAPHY ELECTROGRAPHY HOLOGRAPHY
  • Information Patent Grant

    Magnetic device
    • Patent number 4,355,878
    • Issue date Oct 26, 1982
    • Canon Kabushiki Kaisha
    • Takehiko Ohniwa
    • G03 - PHOTOGRAPHY CINEMATOGRAPHY ELECTROGRAPHY HOLOGRAPHY
  • Information Patent Grant

    Electromagnetic driving source for shutter
    • Patent number 4,351,596
    • Issue date Sep 28, 1982
    • Canon Kabushiki Kaisha
    • Takehiko Ohniwa
    • G03 - PHOTOGRAPHY CINEMATOGRAPHY ELECTROGRAPHY HOLOGRAPHY
  • Information Patent Grant

    Electromagnetically driven shutter device
    • Patent number 4,312,583
    • Issue date Jan 26, 1982
    • Canon Kabushiki Kaisha
    • Takehiko Ohniwa
    • G03 - PHOTOGRAPHY CINEMATOGRAPHY ELECTROGRAPHY HOLOGRAPHY