TREA

Werner Hartwich

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  • Ko ln, DE
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Patents Grantslast 30 patents

  • Information Patent Grant

    Cationic thiadiazole dyestuffs
    • Patent number 5,580,964
    • Issue date Dec 3, 1996
    • Bayer Aktiengesellschaft
    • Horst Berneth
    • D21 - PAPER-MAKING PRODUCTION OF CELLULOSE
  • Information Patent Grant

    Cationic 1,3,4-thiadiazole dyestuffs
    • Patent number 5,436,323
    • Issue date Jul 25, 1995
    • Bayer Aktiengesellschaft
    • Horst Berneth
    • C09 - DYES PAINTS POLISHES NATURAL RESINS ADHESIVES MISCELLANEOUS COMPOSITION...