TREA

Naoto MASUSHIGE

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  • Aichi-ken, JP
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Patents Grantslast 30 patents

  • Information Patent Grant

    Ballpoint pen tip, ballpoint pen refill, and ballpoint pen
    • Patent number 11,975,560
    • Issue date May 7, 2024
    • Kabushiki Kaisha Pilot Corporation
    • Takumi Kajiwara
    • B43 - WRITING OR DRAWING IMPLEMENTS BUREAU ACCESSORIES
  • Information Patent Grant

    Writing instrument for forming thermochromic handwriting
    • Patent number 10,556,459
    • Issue date Feb 11, 2020
    • KABUSHIKI KAISHA PILOT CORPORATION (ALSO TRADING AS PILOT CORPORATION)
    • Takumi Kajiwara
    • C09 - DYES PAINTS POLISHES NATURAL RESINS ADHESIVES MISCELLANEOUS COMPOSITION...
  • Information Patent Grant

    Writing instrument
    • Patent number 9,375,972
    • Issue date Jun 28, 2016
    • Kabushiki Kaisha Pilot Corporation
    • Hirotaka Masuda
    • B43 - WRITING OR DRAWING IMPLEMENTS BUREAU ACCESSORIES

Patents Applicationslast 30 patents