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Helmut Herzog

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  • Leverkusen, DT
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Patents Grantslast 30 patents

  • Information Patent Grant

    Anthraquinone compounds
    • Patent number 4,056,544
    • Issue date Nov 1, 1977
    • Bayer Aktiengesellschaft
    • Walter Hohmann
    • C09 - DYES PAINTS POLISHES NATURAL RESINS ADHESIVES MISCELLANEOUS COMPOSITION...
  • Information Patent Grant

    Anthraquinone dyestuffs
    • Patent number 4,045,457
    • Issue date Aug 30, 1977
    • Bayer Aktiengesellschaft
    • Gunter Gehrke
    • C09 - DYES PAINTS POLISHES NATURAL RESINS ADHESIVES MISCELLANEOUS COMPOSITION...
  • Information Patent Grant

    Process for the preparation of anthraquinone compounds
    • Patent number 4,041,053
    • Issue date Aug 9, 1977
    • Bayer Aktiengesellschaft
    • Helmut Herzog
    • C09 - DYES PAINTS POLISHES NATURAL RESINS ADHESIVES MISCELLANEOUS COMPOSITION...
  • Information Patent Grant

    Nitroanthraquinones
    • Patent number 4,000,167
    • Issue date Dec 28, 1976
    • Bayer Aktiengesellschaft
    • Walter Hohmann
    • C09 - DYES PAINTS POLISHES NATURAL RESINS ADHESIVES MISCELLANEOUS COMPOSITION...
  • Information Patent Grant

    Nitroanthraquinones
    • Patent number 3,989,450
    • Issue date Nov 2, 1976
    • Bayer Aktiengesellschaft
    • Walter Hohmann
    • D06 - TREATMENT OF TEXTILES OR THE LIKE LAUNDERING FLEXIBLE MATERIALS NOT OTH...