TREA

Toshiaki Takayanagi

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  • Yokohama-shi, JP
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Patents Grantslast 30 patents

  • Information Patent Grant

    Ink for oil-based ball pen
    • Patent number 6,786,958
    • Issue date Sep 7, 2004
    • Mitsubishi Pencil Kabushiki Kaisha
    • Masaaki Morita
    • C09 - DYES PAINTS POLISHES NATURAL RESINS ADHESIVES MISCELLANEOUS COMPOSITION...
  • Information Patent Grant

    Ink for ball-point pen and ball-point pen using the same
    • Patent number 6,398,441
    • Issue date Jun 4, 2002
    • Mitsubishi Pencil Kabushiki Kaisha
    • Toshiaki Takayanagi
    • C09 - DYES PAINTS POLISHES NATURAL RESINS ADHESIVES MISCELLANEOUS COMPOSITION...

Patents Applicationslast 30 patents

  • Information Patent Application

    Oil-based ink composition and ball pen containing the same
    • Publication number 20030050363
    • Publication date Mar 13, 2003
    • Susumu Suzuki
    • C09 - DYES PAINTS POLISHES NATURAL RESINS ADHESIVES MISCELLANEOUS COMPOSITION...
  • Information Patent Application

    Ink for oil-based ball pen
    • Publication number 20030033959
    • Publication date Feb 20, 2003
    • Masaaki Morita
    • C09 - DYES PAINTS POLISHES NATURAL RESINS ADHESIVES MISCELLANEOUS COMPOSITION...