TREA

Sigmund Gunzenhauser

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  • Arlesheim, CH
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Patents Grantslast 30 patents

  • Information Patent Grant

    Chromogenic dihydroquinazolines
    • Patent number 4,562,449
    • Issue date Dec 31, 1985
    • Ciba-Geigy Corporation
    • Heinz Balli
    • C07 - ORGANIC CHEMISTRY
  • Information Patent Grant

    Chromenoazaindolizine compounds
    • Patent number 4,506,073
    • Issue date Mar 19, 1985
    • Ciba-Geigy Corporation
    • Heinz Balli
    • C07 - ORGANIC CHEMISTRY
  • Information Patent Grant

    Chromogenic dihydroquinazolines
    • Patent number 4,503,227
    • Issue date Mar 5, 1985
    • Ciba-Geigy Corporation
    • Heinz Balli
    • C07 - ORGANIC CHEMISTRY
  • Information Patent Grant

    Chromenoindole color formers
    • Patent number 4,174,856
    • Issue date Nov 20, 1979
    • Ciba-Geigy Corporation
    • Heinz Balli
    • C07 - ORGANIC CHEMISTRY
  • Information Patent Grant

    Chromenoindole compounds
    • Patent number 4,123,439
    • Issue date Oct 31, 1978
    • Ciba-Geigy Corporation
    • Heinz Balli
    • C07 - ORGANIC CHEMISTRY