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Toshimitsu Kawasumi

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  • Osaka, JP
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Patents Grantslast 30 patents

  • Information Patent Grant

    Aqueous ink composition for ball-point pen
    • Patent number 5,741,354
    • Issue date Apr 21, 1998
    • Sakura Color Products Corporation
    • Toshimitsu Kawasumi
    • C09 - DYES PAINTS POLISHES NATURAL RESINS ADHESIVES MISCELLANEOUS COMPOSITION...
  • Information Patent Grant

    Aqueous ball point ink composition
    • Patent number 5,712,328
    • Issue date Jan 27, 1998
    • Sakura Color Products Corporation
    • Shigeyasu Inoue
    • C09 - DYES PAINTS POLISHES NATURAL RESINS ADHESIVES MISCELLANEOUS COMPOSITION...
  • Information Patent Grant

    Aqueous ink compositions and methods for their production
    • Patent number 5,683,500
    • Issue date Nov 4, 1997
    • Sakura Color Products Corporation
    • Toshimitsu Kawasumi
    • C09 - DYES PAINTS POLISHES NATURAL RESINS ADHESIVES MISCELLANEOUS COMPOSITION...
  • Information Patent Grant

    Aqueous ink composition
    • Patent number 5,547,499
    • Issue date Aug 20, 1996
    • Sakura Color Products Corporation
    • Toshimitsu Kawasumi
    • C09 - DYES PAINTS POLISHES NATURAL RESINS ADHESIVES MISCELLANEOUS COMPOSITION...
  • Information Patent Grant

    Aqueous ink composition for ball-point pen
    • Patent number 5,522,920
    • Issue date Jun 4, 1996
    • Sakura Color Products Corporation
    • Toshimitsu Kawasumi
    • C09 - DYES PAINTS POLISHES NATURAL RESINS ADHESIVES MISCELLANEOUS COMPOSITION...