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Yoshitaka Ohtomo

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  • Fuji, JP
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Patents Grantslast 30 patents

  • Information Patent Grant

    Monoazo lake pigment and uses thereof
    • Patent number 5,256,772
    • Issue date Oct 26, 1993
    • Toyo Ink Manufacturing Co., Ltd.
    • Yoshitaka Ohtomo
    • C08 - ORGANIC MACROMOLECULAR COMPOUNDS THEIR PREPARATION OR CHEMICAL WORKING-...
  • Information Patent Grant

    Pigment composition and its use
    • Patent number 5,248,335
    • Issue date Sep 28, 1993
    • Toyo Ink Manufacturing Co., Ltd.
    • Yoshitaka Ohtomo
    • C09 - DYES PAINTS POLISHES NATURAL RESINS ADHESIVES MISCELLANEOUS COMPOSITION...
  • Information Patent Grant

    Azo pigment composition
    • Patent number 4,810,302
    • Issue date Mar 7, 1989
    • Toyo Ink Manufacturing Co., Ltd.
    • Takenori Funatsu
    • C09 - DYES PAINTS POLISHES NATURAL RESINS ADHESIVES MISCELLANEOUS COMPOSITION...