Gerald Siegrist

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Riehen, CH

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Patents Grantslast 30 patents

Information Patent Grant
Process for improving the color yield and fastness properties of dy...
- Patent number 4,246,670
- Issue date Jan 27, 1981
- Ciba-Geigy Corporation
- Pierre Perrin
- D06 - TREATMENT OF TEXTILES OR THE LIKE LAUNDERING FLEXIBLE MATERIALS NOT OTH...
Information Patent Grant
Process for improving the color yield and fastness properties of dy...
- Patent number 4,180,664
- Issue date Dec 25, 1979
- Ciba-Geigy Corporation
- Pierre Perrin
- D06 - TREATMENT OF TEXTILES OR THE LIKE LAUNDERING FLEXIBLE MATERIALS NOT OTH...
Information Patent Grant
Process for improving the color yield and fastness properties of dy...
- Patent number 4,171,955
- Issue date Oct 23, 1979
- Ciba-Geigy Corporation
- Pierre Perrin
- D06 - TREATMENT OF TEXTILES OR THE LIKE LAUNDERING FLEXIBLE MATERIALS NOT OTH...