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Toru Kitao

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  • Yokohama-shi, JP
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Patents Grantslast 30 patents

  • Information Patent Grant

    Ballpoint pen tip, ballpoint pen utilizing the ballpoint pen tip an...
    • Patent number 6,887,008
    • Issue date May 3, 2005
    • Mitsubishi Pencil Kabushikikaisha
    • Toru Kitao
    • B43 - WRITING OR DRAWING IMPLEMENTS BUREAU ACCESSORIES
  • Information Patent Grant

    Ball-point pen cap
    • Patent number 5,915,871
    • Issue date Jun 29, 1999
    • Mitsubishi Pencil Kabushiki Kaisha
    • Seiichi Kobayashi
    • B43 - WRITING OR DRAWING IMPLEMENTS BUREAU ACCESSORIES
  • Information Patent Grant

    Ball-point pen with back flow stop
    • Patent number 5,711,626
    • Issue date Jan 27, 1998
    • Mitsubishi Pencil Kabushiki Kaisha
    • Seiichi Kobayashi
    • B43 - WRITING OR DRAWING IMPLEMENTS BUREAU ACCESSORIES
  • Information Patent Grant

    Metal tip for ball-point pen
    • Patent number 5,690,442
    • Issue date Nov 25, 1997
    • Mitsubishi Pencil Kabushiki Kaisha
    • Shinsuke Sato
    • B43 - WRITING OR DRAWING IMPLEMENTS BUREAU ACCESSORIES
  • Information Patent Grant

    Ball-point pen
    • Patent number 5,678,942
    • Issue date Oct 21, 1997
    • Mitsubishi Pencil Kabushiki Kaisha
    • Seiichi Kobayashi
    • B43 - WRITING OR DRAWING IMPLEMENTS BUREAU ACCESSORIES

Patents Applicationslast 30 patents