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Tuyoshi Ishikawa

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Patents Grantslast 30 patents

  • Information Patent Grant

    Pattern reading apparatus
    • Patent number 6,943,888
    • Issue date Sep 13, 2005
    • PENTAX Corporation
    • Tuyoshi Ishikawa
    • G02 - OPTICS
  • Information Patent Grant

    Pattern reading apparatus
    • Patent number 6,622,915
    • Issue date Sep 23, 2003
    • PENTAX Corporation
    • Tuyoshi Ishikawa
    • G02 - OPTICS
  • Information Patent Grant

    Pattern reading apparatus
    • Patent number 6,498,649
    • Issue date Dec 24, 2002
    • PENTAX Corporation
    • Tuyoshi Ishikawa
    • G02 - OPTICS
  • Information Patent Grant

    Pattern reading apparatus
    • Patent number 6,483,591
    • Issue date Nov 19, 2002
    • Asahi Kogaku Kogyo Kabushiki Kaisha
    • Tuyoshi Ishikawa
    • G02 - OPTICS
  • Information Patent Grant

    Pattern reading apparatus
    • Patent number 6,476,917
    • Issue date Nov 5, 2002
    • Asahi Kogaku Kogyo Kabushiki Kaisha
    • Tuyoshi Ishikawa
    • G02 - OPTICS
  • Information Patent Grant

    Pattern reading apparatus
    • Patent number 6,429,937
    • Issue date Aug 6, 2002
    • Asahi Kogaku Kogyo Kabushiki Kaisha
    • Tuyoshi Ishikawa
    • G02 - OPTICS
  • Information Patent Grant

    Pattern reading apparatus
    • Patent number 6,421,129
    • Issue date Jul 16, 2002
    • Asahi Kogaku Kogyo Kabushiki Kaisha
    • Tuyoshi Ishikawa
    • G02 - OPTICS
  • Information Patent Grant

    Pattern reading apparatus
    • Patent number 6,369,886
    • Issue date Apr 9, 2002
    • Asahi Kogaku Kogyo Kabushiki Kaisha
    • Tuyoshi Ishikawa
    • G02 - OPTICS
  • Information Patent Grant

    Pattern reading apparatus
    • Patent number 6,310,689
    • Issue date Oct 30, 2001
    • Asahi Kogaku Kogyo Kabushiki Kaisha
    • Tuyoshi Ishikawa
    • G02 - OPTICS
  • Information Patent Grant

    Strobe light distribution lens and zoom strobe
    • Patent number 6,179,447
    • Issue date Jan 30, 2001
    • Asahi Kogaku Kogyo Kabushiki Kaisha
    • Tuyoshi Ishikawa
    • G02 - OPTICS
  • Information Patent Grant

    Apparatus and method for controlling magnification of image in camera
    • Patent number 5,946,028
    • Issue date Aug 31, 1999
    • Asahi Kogaku Kogyo Kabushiki Kaisha
    • Tuyoshi Ishikawa
    • G02 - OPTICS
  • Information Patent Grant

    Strobe device
    • Patent number 5,772,302
    • Issue date Jun 30, 1998
    • Asahi Kogaku Kogyo Kabushiki Kaisha
    • Tuyoshi Ishikawa
    • G03 - PHOTOGRAPHY CINEMATOGRAPHY ELECTROGRAPHY HOLOGRAPHY
  • Information Patent Grant

    Zoom strobe device
    • Patent number 5,727,235
    • Issue date Mar 10, 1998
    • Asahi Kogaku Kogyo Kabushiki Kaisha
    • Tuyoshi Ishikawa
    • G03 - PHOTOGRAPHY CINEMATOGRAPHY ELECTROGRAPHY HOLOGRAPHY
  • Information Patent Grant

    Optical system for camera
    • Patent number 5,680,249
    • Issue date Oct 21, 1997
    • Asahi Kogaku Kogyo Kabushiki Kaisha
    • Tuyoshi Ishikawa
    • G02 - OPTICS
  • Information Patent Grant

    Strobe device
    • Patent number 5,539,622
    • Issue date Jul 23, 1996
    • Asahi Kogaku Kogyo Kabushiki Kaisha
    • Tuyoshi Ishikawa
    • G03 - PHOTOGRAPHY CINEMATOGRAPHY ELECTROGRAPHY HOLOGRAPHY

Patents Applicationslast 30 patents

  • Information Patent Application

    Pattern reading apparatus
    • Publication number 20010022693
    • Publication date Sep 20, 2001
    • ASAHI KOGAKU KOGYO KABUSHIKI KAISHA
    • Tuyoshi Ishikawa
    • G02 - OPTICS
  • Information Patent Application

    Pattern reading apparatus
    • Publication number 20010021022
    • Publication date Sep 13, 2001
    • ASAHI KOGAKU KOGYO KABUSHIKI KAISHA
    • Tuyoshi Ishikawa
    • G02 - OPTICS
  • Information Patent Application

    Pattern reading apparatus
    • Publication number 20010021023
    • Publication date Sep 13, 2001
    • ASAHI KOGAKU KOGYO KABUSHIKI KAISHA
    • Tuyoshi Ishikawa
    • G02 - OPTICS
  • Information Patent Application

    Pattern reading apparatus
    • Publication number 20010021021
    • Publication date Sep 13, 2001
    • ASAHI KOGAKU KOGYO KABUSHIKI KAISHA
    • Tuyoshi Ishikawa
    • G02 - OPTICS
  • Information Patent Application

    Pattern reading apparatus
    • Publication number 20010019413
    • Publication date Sep 6, 2001
    • ASAHI KOGAKU KOGYO KABUSHIKI KAISHA
    • Tuyoshi Ishikawa
    • G02 - OPTICS
  • Information Patent Application

    Pattern reading apparatus
    • Publication number 20010015807
    • Publication date Aug 23, 2001
    • ASAHI KOGAKU KOGYO KABUSHIKI KAISHA
    • Tuyoshi Ishikawa
    • G02 - OPTICS
  • Information Patent Application

    Pattern reading apparatus
    • Publication number 20010012139
    • Publication date Aug 9, 2001
    • ASAHI KOGAKU KOGYO KABUSHIKI KAISHA
    • Tuyoshi Ishikawa
    • G02 - OPTICS