Josef Frauenknecht

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Therwil, CH

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Patents Grantslast 30 patents

Information Patent Grant
Method for producing wool dyeings of improved levelness and dye mix...
- Patent number 4,894,065
- Issue date Jan 16, 1990
- Sandoz Ltd.
- Oskar Annen
- D06 - TREATMENT OF TEXTILES OR THE LIKE LAUNDERING FLEXIBLE MATERIALS NOT OTH...
Information Patent Grant
Dyeing of polyamide fibers with anionic dyes using a cationic assis...
- Patent number 4,852,991
- Issue date Aug 1, 1989
- Sandoz Ltd.
- Josef Frauenknecht
- D06 - TREATMENT OF TEXTILES OR THE LIKE LAUNDERING FLEXIBLE MATERIALS NOT OTH...
Information Patent Grant
Method of dyeing wool with acid dyestuffs
- Patent number 4,622,045
- Issue date Nov 11, 1986
- Sandoz Ltd.
- Josef Frauenknecht
- D06 - TREATMENT OF TEXTILES OR THE LIKE LAUNDERING FLEXIBLE MATERIALS NOT OTH...
Information Patent Grant
Dyeing process
- Patent number 3,980,428
- Issue date Sep 14, 1976
- Sandoz Ltd.
- Sergio Fabbri
- D06 - TREATMENT OF TEXTILES OR THE LIKE LAUNDERING FLEXIBLE MATERIALS NOT OTH...
Information Patent Grant
Dyeing process
- Patent number 3,953,168
- Issue date Apr 27, 1976
- Sandoz Ltd.
- Sergio Fabbri
- D06 - TREATMENT OF TEXTILES OR THE LIKE LAUNDERING FLEXIBLE MATERIALS NOT OTH...