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Hirotaka Tagawa

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  • Yokohama-shi, JP
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Patents Grantslast 30 patents

  • Information Patent Grant

    Conductive polymer material, method for producing conductive polyme...
    • Patent number 9,561,502
    • Issue date Feb 7, 2017
    • Bridgestone Corporation
    • Tadashi Nakajima
    • G03 - PHOTOGRAPHY CINEMATOGRAPHY ELECTROGRAPHY HOLOGRAPHY
  • Information Patent Grant

    Conductive roller and manufacturing method thereof
    • Patent number 9,535,354
    • Issue date Jan 3, 2017
    • Bridgestone Corporation
    • Hirotaka Tagawa
    • B29 - WORKING OF PLASTICS WORKING OF SUBSTANCES IN A PLASTIC STATE, IN GENERAL
  • Information Patent Grant

    Developing roller
    • Patent number 9,201,337
    • Issue date Dec 1, 2015
    • Bridgestone Corporation
    • Hirotaka Tagawa
    • G03 - PHOTOGRAPHY CINEMATOGRAPHY ELECTROGRAPHY HOLOGRAPHY
  • Information Patent Grant

    Electrically conductive roller
    • Patent number 8,932,194
    • Issue date Jan 13, 2015
    • Bridgestone Corporation
    • Hirotaka Tagawa
    • C08 - ORGANIC MACROMOLECULAR COMPOUNDS THEIR PREPARATION OR CHEMICAL WORKING-...
  • Information Patent Grant

    Electrifying roller
    • Patent number 8,711,543
    • Issue date Apr 29, 2014
    • Bridgestone Corporation
    • Junichi Takano
    • F16 - ENGINEERING ELEMENTS AND UNITS GENERAL MEASURES FOR PRODUCING AND MAINT...
  • Information Patent Grant

    Electrifying roller
    • Patent number 8,642,148
    • Issue date Feb 4, 2014
    • Bridgestone Corporation
    • Izumi Egashira
    • C08 - ORGANIC MACROMOLECULAR COMPOUNDS THEIR PREPARATION OR CHEMICAL WORKING-...
  • Information Patent Grant

    Developing roller and imaging apparatus comprising the same
    • Patent number 8,550,968
    • Issue date Oct 8, 2013
    • Bridgestone Corporation
    • Takayuki Sugimura
    • G03 - PHOTOGRAPHY CINEMATOGRAPHY ELECTROGRAPHY HOLOGRAPHY
  • Information Patent Grant

    Developing roller comprising surface layer containing water-dispers...
    • Patent number 8,401,444
    • Issue date Mar 19, 2013
    • Bridgestone Corporation
    • Takayuki Sugimura
    • G03 - PHOTOGRAPHY CINEMATOGRAPHY ELECTROGRAPHY HOLOGRAPHY

Patents Applicationslast 30 patents

  • Information Patent Application

    CONDUCTIVE POLYMER MATERIAL, METHOD FOR PRODUCING CONDUCTIVE POLYME...
    • Publication number 20150352542
    • Publication date Dec 10, 2015
    • BRIDGESTONE CORPORATION
    • Tadashi NAKAJIMA
    • B01 - PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
  • Information Patent Application

    DEVELOPING ROLLER
    • Publication number 20140126935
    • Publication date May 8, 2014
    • BRIDGESTONE CORPORATION
    • Hirotaka Tagawa
    • G03 - PHOTOGRAPHY CINEMATOGRAPHY ELECTROGRAPHY HOLOGRAPHY
  • Information Patent Application

    CONDUCTIVE ROLLER AND MANUFACTURING METHOD THEREOF
    • Publication number 20120316045
    • Publication date Dec 13, 2012
    • BRIDGESTONE CORPORATION
    • Hirotaka Tagawa
    • B29 - WORKING OF PLASTICS WORKING OF SUBSTANCES IN A PLASTIC STATE, IN GENERAL
  • Information Patent Application

    ELECTRIFYING ROLLER
    • Publication number 20120129666
    • Publication date May 24, 2012
    • BRIDGESTONE CORPORATION
    • Izumi Egashira
    • C08 - ORGANIC MACROMOLECULAR COMPOUNDS THEIR PREPARATION OR CHEMICAL WORKING-...
  • Information Patent Application

    ELECTRIFYING ROLLER
    • Publication number 20110249372
    • Publication date Oct 13, 2011
    • BRIDGESTONE CORPORATION
    • Junichi Takano
    • C08 - ORGANIC MACROMOLECULAR COMPOUNDS THEIR PREPARATION OR CHEMICAL WORKING-...
  • Information Patent Application

    METHOD FOR MANUFACTURING ELECTRIFYING ROLLER AND ELECTRIFYING ROLLE...
    • Publication number 20110206414
    • Publication date Aug 25, 2011
    • BRIDGESTONE CORPORATION
    • Hirotaka Tagawa
    • C08 - ORGANIC MACROMOLECULAR COMPOUNDS THEIR PREPARATION OR CHEMICAL WORKING-...
  • Information Patent Application

    ELECTRICALLY CONDUCTIVE ROLLER
    • Publication number 20110124478
    • Publication date May 26, 2011
    • Hirotaka Tagawa
    • C08 - ORGANIC MACROMOLECULAR COMPOUNDS THEIR PREPARATION OR CHEMICAL WORKING-...
  • Information Patent Application

    DEVELOPMENT ROLLER
    • Publication number 20100189473
    • Publication date Jul 29, 2010
    • Bridgestone Corporation
    • Takayuki Sugimura
    • G03 - PHOTOGRAPHY CINEMATOGRAPHY ELECTROGRAPHY HOLOGRAPHY
  • Information Patent Application

    Developing roller and imaging apparatus comprising the same
    • Publication number 20070111874
    • Publication date May 17, 2007
    • Bridgestone Corporation
    • Takayuki Sugimura
    • G03 - PHOTOGRAPHY CINEMATOGRAPHY ELECTROGRAPHY HOLOGRAPHY
  • Information Patent Application

    Conductive roller and image forming apparatus comprising the same
    • Publication number 20070037680
    • Publication date Feb 15, 2007
    • Bridgestone Corporation
    • Hirotaka Tagawa
    • G03 - PHOTOGRAPHY CINEMATOGRAPHY ELECTROGRAPHY HOLOGRAPHY