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Tatsuhiko Oikawa

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  • Kanagawa, JP
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Patents Grantslast 30 patents

Patents Applicationslast 30 patents

  • Information Patent Application

    Image forming apparatus
    • Publication number 20090220277
    • Publication date Sep 3, 2009
    • Ricoh Company, Limited
    • Toshiyuki Andoh
    • G03 - PHOTOGRAPHY CINEMATOGRAPHY ELECTROGRAPHY HOLOGRAPHY
  • Information Patent Application

    Sheet conveying device and image forming apparatus
    • Publication number 20090212491
    • Publication date Aug 27, 2009
    • Ricoh Company, Limited
    • Hidetaka Noguchi
    • G03 - PHOTOGRAPHY CINEMATOGRAPHY ELECTROGRAPHY HOLOGRAPHY
  • Information Patent Application

    Sheet conveying device and image forming apparatus
    • Publication number 20090212488
    • Publication date Aug 27, 2009
    • Ricoh Company, Limited
    • Takashi Hashimoto
    • G03 - PHOTOGRAPHY CINEMATOGRAPHY ELECTROGRAPHY HOLOGRAPHY
  • Information Patent Application

    Image forming apparatus
    • Publication number 20090207461
    • Publication date Aug 20, 2009
    • Ricoh Company, Ltd.
    • Takashi Hodoshima
    • G03 - PHOTOGRAPHY CINEMATOGRAPHY ELECTROGRAPHY HOLOGRAPHY
  • Information Patent Application

    Driving apparatus and image forming apparatus
    • Publication number 20090162118
    • Publication date Jun 25, 2009
    • Ricoh Company, Ltd.
    • Hidetaka Noguchi
    • G03 - PHOTOGRAPHY CINEMATOGRAPHY ELECTROGRAPHY HOLOGRAPHY
  • Information Patent Application

    Image forming device
    • Publication number 20090116860
    • Publication date May 7, 2009
    • Ricoh Company, Ltd.
    • Seiji Hoshino
    • G03 - PHOTOGRAPHY CINEMATOGRAPHY ELECTROGRAPHY HOLOGRAPHY
  • Information Patent Application

    Image transfer apparatus, image fixing apparatus, and registration...
    • Publication number 20090060613
    • Publication date Mar 5, 2009
    • Ricoh Company, Ltd.
    • Hiromichi Matsuda
    • G03 - PHOTOGRAPHY CINEMATOGRAPHY ELECTROGRAPHY HOLOGRAPHY
  • Information Patent Application

    SHEET CONVEYING DEVICE AND IMAGE FORMING APPARATUS
    • Publication number 20080303202
    • Publication date Dec 11, 2008
    • Hidetaka NOGUCHI
    • G03 - PHOTOGRAPHY CINEMATOGRAPHY ELECTROGRAPHY HOLOGRAPHY
  • Information Patent Application

    Sheet conveying device and image forming apparatus
    • Publication number 20080232880
    • Publication date Sep 25, 2008
    • Ricoh Company, Limited
    • Hidetaka Noguchi
    • G03 - PHOTOGRAPHY CINEMATOGRAPHY ELECTROGRAPHY HOLOGRAPHY
  • Information Patent Application

    Motor control device and image forming apparatus
    • Publication number 20080175612
    • Publication date Jul 24, 2008
    • Ricoh Company, Ltd.
    • Tatsuhiko Oikawa
    • G03 - PHOTOGRAPHY CINEMATOGRAPHY ELECTROGRAPHY HOLOGRAPHY
  • Information Patent Application

    IMAGE FORMING APPARATUS
    • Publication number 20070269230
    • Publication date Nov 22, 2007
    • Seiji HOSHINO
    • G03 - PHOTOGRAPHY CINEMATOGRAPHY ELECTROGRAPHY HOLOGRAPHY
  • Information Patent Application

    Head driving unit and an image forming apparatus using the same
    • Publication number 20030011653
    • Publication date Jan 16, 2003
    • Ricoh Company, Ltd,
    • Tatsuhiko Oikawa
    • B41 - PRINTING LINING MACHINES TYPEWRITERS STAMPS