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Seiichi Maruyama

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  • Yokohama-shi, JP
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Patents Grantslast 30 patents

  • Information Patent Grant

    Ball pen
    • Patent number 9,545,813
    • Issue date Jan 17, 2017
    • Mitsubishi Pencil Company, Limited
    • Takeo Fukumoto
    • B43 - WRITING OR DRAWING IMPLEMENTS BUREAU ACCESSORIES
  • Information Patent Grant

    Writing implement refill and writing implement
    • Patent number 9,162,515
    • Issue date Oct 20, 2015
    • Mitsubishi Pencil Co., Ltd.
    • Seiichi Maruyama
    • B43 - WRITING OR DRAWING IMPLEMENTS BUREAU ACCESSORIES

Patents Applicationslast 30 patents

  • Information Patent Application

    BALL PEN
    • Publication number 20150165812
    • Publication date Jun 18, 2015
    • MITSUBISHI PENCIL COMPANY, LIMITED
    • Takeo Fukumoto
    • B43 - WRITING OR DRAWING IMPLEMENTS BUREAU ACCESSORIES
  • Information Patent Application

    WRITING IMPLEMENT REFILL AND WRITING IMPLEMENT
    • Publication number 20140140752
    • Publication date May 22, 2014
    • MITSUBISHI PENCIL COMPANY, LIMITED
    • Seiichi Maruyama
    • B43 - WRITING OR DRAWING IMPLEMENTS BUREAU ACCESSORIES