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Yuko Shigeta

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  • Choshi, JP
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Patents Grantslast 30 patents

  • Information Patent Grant

    Azo lake pigments
    • Patent number 4,767,844
    • Issue date Aug 30, 1988
    • Dainippon Ink and Chemicals, Inc.
    • Hirohito Ando
    • C09 - DYES PAINTS POLISHES NATURAL RESINS ADHESIVES MISCELLANEOUS COMPOSITION...
  • Information Patent Grant

    Non-bronzing reddish lake pigment
    • Patent number 4,711,674
    • Issue date Dec 8, 1987
    • Dainippon Ink and Chemicals, Inc.
    • Hirohito Ando
    • C09 - DYES PAINTS POLISHES NATURAL RESINS ADHESIVES MISCELLANEOUS COMPOSITION...