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Takashi HAMAZAKI

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  • Shinagawa-ku, JP
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Patents Grantslast 30 patents

  • Information Patent Grant

    Aqueous ink composition for ballpoint pen
    • Patent number 12,202,990
    • Issue date Jan 21, 2025
    • MITSUBISHI PENCIL COMPANY, LIMITED
    • Kousuke Ogura
    • C09 - DYES PAINTS POLISHES NATURAL RESINS ADHESIVES MISCELLANEOUS COMPOSITION...

Patents Applicationslast 30 patents

  • Information Patent Application

    INK COMPOSITION FOR WATER-BASED BALLPOINT PEN
    • Publication number 20220169874
    • Publication date Jun 2, 2022
    • MITSUBISHI PENCIL COMPANY, LIMITED
    • Takashi HAMAZAKI
    • C09 - DYES PAINTS POLISHES NATURAL RESINS ADHESIVES MISCELLANEOUS COMPOSITION...
  • Information Patent Application

    AQUEOUS INK COMPOSITION FOR BALLPOINT PEN
    • Publication number 20220025197
    • Publication date Jan 27, 2022
    • MITSUBISHI PENCIL COMPANY, LIMITED
    • Kousuke OGURA
    • C09 - DYES PAINTS POLISHES NATURAL RESINS ADHESIVES MISCELLANEOUS COMPOSITION...