Herbert Helfert

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Trenton, MI, US

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Patents Grantslast 30 patents

Information Patent Grant
Dyeing process using quaternary ammonium salt as retarder
- Patent number 4,052,159
- Issue date Oct 4, 1977
- BASF Aktiengesellschaft
- Ernst Fuerst
- D06 - TREATMENT OF TEXTILES OR THE LIKE LAUNDERING FLEXIBLE MATERIALS NOT OTH...
Information Patent Grant
Quaternary ammonium salts
- Patent number 3,963,714
- Issue date Jun 15, 1976
- BASF Aktiengesellschaft
- Jozsef Gerendas
- D06 - TREATMENT OF TEXTILES OR THE LIKE LAUNDERING FLEXIBLE MATERIALS NOT OTH...
Information Patent Grant
Production of level dyeings on acrylonitrile polymer fibers with ba...
- Patent number 3,945,794
- Issue date Mar 23, 1976
- BASF Aktiengesellschaft
- Rudolf Rokohl
- D06 - TREATMENT OF TEXTILES OR THE LIKE LAUNDERING FLEXIBLE MATERIALS NOT OTH...