TREA

Siegfried Dengler

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  • Choex, CH
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Patents Grantslast 30 patents

  • Information Patent Grant

    Novel naphthoylene-perinones disperse dyestuffs
    • Patent number 4,210,757
    • Issue date Jul 1, 1980
    • Ciba-Geigy Corporation
    • Siegfried Dengler
    • C09 - DYES PAINTS POLISHES NATURAL RESINS ADHESIVES MISCELLANEOUS COMPOSITION...
  • Information Patent Grant

    Disperse dyestuffs
    • Patent number 4,067,889
    • Issue date Jan 10, 1978
    • Ciba-Geigy Corporation
    • Siegfried Dengler
    • C09 - DYES PAINTS POLISHES NATURAL RESINS ADHESIVES MISCELLANEOUS COMPOSITION...
  • Information Patent Grant

    Coumarine dyestuffs of the dispersion series
    • Patent number 4,002,619
    • Issue date Jan 11, 1977
    • Ciba-Geigy Corporation
    • Siegfried Dengler
    • C09 - DYES PAINTS POLISHES NATURAL RESINS ADHESIVES MISCELLANEOUS COMPOSITION...
  • Information Patent Grant

    Disperse dyestuffs
    • Patent number 3,970,675
    • Issue date Jul 20, 1976
    • Ciba-Geigy Corporation
    • Siegfried Dengler
    • C09 - DYES PAINTS POLISHES NATURAL RESINS ADHESIVES MISCELLANEOUS COMPOSITION...