Patents by Inventor Helmut Vautrin

Helmut Vautrin has filed for patents to protect the following inventions. This listing includes patent applications that are pending as well as patents that have already been granted by the United States Patent and Trademark Office (USPTO).

  • Conditioning of texturized filament yarns
    Patent number: 4247291
    Abstract: Process for conditioning texturized filament yarns, which comprises treating the yarn, after dyeing, with a fatty acid hydroxyalkylethylene diamine condensation product obtained by condensation of 1 mol of hydroxyethyl- or hydroxypropylethylene diamine with 1.2 to 1.8 mols of one or several C.sub.12-22 fatty acids at 160.degree. to 220.degree. C.
    Type: Grant
    Filed: May 29, 1979
    Date of Patent: January 27, 1981
    Assignee: Hoechst Aktiengesellschaft
    Inventors: Helmut Vautrin, Gustav Dollinger