TREA

Masao Hashi

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  • Yokohama, JP
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Patents Grantslast 30 patents

  • Information Patent Grant

    Applicator
    • Patent number 5,957,609
    • Issue date Sep 28, 1999
    • Mitsubishi Pencil Kabushiki Kaisha
    • Masaaki Morita
    • 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