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Masaaki Kubota

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Patents Grantslast 30 patents

  • Information Patent Grant

    Rotating-operation type of writing tool
    • Patent number 9,630,444
    • Issue date Apr 25, 2017
    • Kabushiki Kaish Pilot Corporation
    • Masaaki Kubota
    • B43 - WRITING OR DRAWING IMPLEMENTS BUREAU ACCESSORIES
  • Information Patent Grant

    Rotating-operation type of writing tool
    • Patent number 9,493,028
    • Issue date Nov 15, 2016
    • Kabushiki Kaisha Pilot Corporation
    • Masaaki Kubota
    • B43 - WRITING OR DRAWING IMPLEMENTS BUREAU ACCESSORIES

Patents Applicationslast 30 patents

  • Information Patent Application

    ROTATING-OPERATION TYPE OF WRITING TOOL
    • Publication number 20150290963
    • Publication date Oct 15, 2015
    • Kabushiki Kaisha Pilot Corporation (also trading as Pilot Corportation
    • Masaaki KUBOTA
    • B43 - WRITING OR DRAWING IMPLEMENTS BUREAU ACCESSORIES
  • Information Patent Application

    ROTATING-OPERATION TYPE OF WRITING TOOL
    • Publication number 20150239279
    • Publication date Aug 27, 2015
    • Kabushiki Kaisha Pilot Corporation
    • Masaaki Kubota
    • B43 - WRITING OR DRAWING IMPLEMENTS BUREAU ACCESSORIES