TREA

Gunter Gehrke

Follow

Person

  • Cologne, DT
People

Patents Grantslast 30 patents

  • Information Patent Grant

    Anthraquinone dyestuffs
    • Patent number RE29577
    • Issue date Mar 14, 1978
    • Bayer Aktiengesellschaft
    • Volker Hederich
    • 260 - Chemistry of carbon compounds
  • 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

    1-Amino-2-(bromophenoxy-alkoxy)-4-hydroxy anthraquinone dyestuffs
    • Patent number 4,036,862
    • Issue date Jul 19, 1977
    • Bayer Aktiengesellschaft
    • Volker Hederich
    • D06 - TREATMENT OF TEXTILES OR THE LIKE LAUNDERING FLEXIBLE MATERIALS NOT OTH...
  • Information Patent Grant

    Process for the preparation of diamino-dihydroxy anthraquinone disp...
    • Patent number 4,029,680
    • Issue date Jun 14, 1977
    • Bayer Aktiengesellschaft
    • Gunter Gehrke
    • C09 - DYES PAINTS POLISHES NATURAL RESINS ADHESIVES MISCELLANEOUS COMPOSITION...
  • Information Patent Grant

    Anthraquinone dyestuffs
    • Patent number 3,959,315
    • Issue date May 25, 1976
    • Bayer Aktiengesellschaft
    • Volker Hederich
    • C09 - DYES PAINTS POLISHES NATURAL RESINS ADHESIVES MISCELLANEOUS COMPOSITION...