TREA

Kengo Nagaoka

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  • Yokohama, JP
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Patents Grantslast 30 patents

  • Information Patent Grant

    Writing implement
    • Patent number 8,678,691
    • Issue date Mar 25, 2014
    • Mitsubishi Pencil Co., Ltd.
    • Masayoshi Kiritake
    • B43 - WRITING OR DRAWING IMPLEMENTS BUREAU ACCESSORIES
  • Information Patent Grant

    Writing implement
    • Patent number 8,162,554
    • Issue date Apr 24, 2012
    • Mitsubishi Pencil Company Limited
    • Kazuhiko Furukawa
    • B43 - WRITING OR DRAWING IMPLEMENTS BUREAU ACCESSORIES

Patents Applicationslast 30 patents

  • Information Patent Application

    WRITING IMPLEMENT
    • Publication number 20100284723
    • Publication date Nov 11, 2010
    • Masayoshi Kiritake
    • B43 - WRITING OR DRAWING IMPLEMENTS BUREAU ACCESSORIES
  • Information Patent Application

    WRITING IMPLEMENT
    • Publication number 20100104347
    • Publication date Apr 29, 2010
    • Kazuhiko Furukawa
    • B43 - WRITING OR DRAWING IMPLEMENTS BUREAU ACCESSORIES
  • Information Patent Application

    Clip for a Writing Implement
    • Publication number 20090165261
    • Publication date Jul 2, 2009
    • Mitsubishi Pencil Co., Ltd.
    • Kazuhiko Furukawa
    • B43 - WRITING OR DRAWING IMPLEMENTS BUREAU ACCESSORIES