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Naoki Hirakawa

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  • Yokohama-shi, JP
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Patents Applicationslast 30 patents

  • Information Patent Application

    Conductive rubber member
    • Publication number 20070110936
    • Publication date May 17, 2007
    • HOKUSHIN CORPORATION
    • Naoki Hirakawa
    • B32 - LAYERED PRODUCTS
  • Information Patent Application

    Conductive rubber member
    • Publication number 20070104906
    • Publication date May 10, 2007
    • HOKUSHIN CORPORATION
    • Naoki Hirakawa
    • B32 - LAYERED PRODUCTS
  • Information Patent Application

    Conductive roller and inspection method therefor
    • Publication number 20060142131
    • Publication date Jun 29, 2006
    • HOKUSHIN CORPORATION
    • Makoto Iwamura
    • G03 - PHOTOGRAPHY CINEMATOGRAPHY ELECTROGRAPHY HOLOGRAPHY
  • Information Patent Application

    Conductive roll and method for producing same
    • Publication number 20050227089
    • Publication date Oct 13, 2005
    • HOKUSHIN CORPORATION
    • Naoki Hirakawa
    • C08 - ORGANIC MACROMOLECULAR COMPOUNDS THEIR PREPARATION OR CHEMICAL WORKING-...
  • Information Patent Application

    Moderately resistive rubber composition and rubber member
    • Publication number 20050143499
    • Publication date Jun 30, 2005
    • Hidetoshi Aoki
    • C08 - ORGANIC MACROMOLECULAR COMPOUNDS THEIR PREPARATION OR CHEMICAL WORKING-...