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Hans-Lothar Dorsch

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  • Cologne, DE
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Patents Grantslast 30 patents

  • Information Patent Grant

    Process for preparing cationic hydrazone dyestuffs
    • Patent number 4,760,132
    • Issue date Jul 26, 1988
    • Bayer Aktiengesellschaft
    • Hans-Lothar Dorsch
    • C09 - DYES PAINTS POLISHES NATURAL RESINS ADHESIVES MISCELLANEOUS COMPOSITION...
  • Information Patent Grant

    Thiazolediazacyanine dyestuffs
    • Patent number 4,277,396
    • Issue date Jul 7, 1981
    • Bayer Aktiengesellschaft
    • Hans-Lothar Dorsch
    • C09 - DYES PAINTS POLISHES NATURAL RESINS ADHESIVES MISCELLANEOUS COMPOSITION...
  • Information Patent Grant

    Process for isolating triarylmethane dyestuffs
    • Patent number 4,247,470
    • Issue date Jan 27, 1981
    • Bayer Aktiengesellschaft
    • Karl-Heinz Hermann
    • C09 - DYES PAINTS POLISHES NATURAL RESINS ADHESIVES MISCELLANEOUS COMPOSITION...
  • Information Patent Grant

    Process for isolating triarylmethane dyestuffs
    • Patent number 4,211,716
    • Issue date Jul 8, 1980
    • Bayer Aktiengesellschaft
    • Karl H. Hermann
    • C09 - DYES PAINTS POLISHES NATURAL RESINS ADHESIVES MISCELLANEOUS COMPOSITION...