Patents by Inventor Bernd Sassenrath

Bernd Sassenrath 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).

  • Modacryl filaments and fibers and process for their manufacture
    Patent number: 4056517
    Abstract: The invention relates to modacryl filaments and fibers made from copolymers insoluble in acetone of acrylonitrile and from 20 to 45 weight % of vinylidene chloride, containing from 0 to 1.5 weight % of unsaturated organic sulfonic acids or the salts thereof, and from 0 to 10 weight % of further copolymerizable compounds, which copolymers have a K value according to Fikentscher of more than about 95 and a process for the manufacture thereof. These modacryl filaments and fibers are especially distinguished by their permanent brilliance and permanent transparence; these properties are maintained even on contact with water having a temperature above 80.degree. C.
    Type: Grant
    Filed: February 25, 1976
    Date of Patent: November 1, 1977
    Assignee: Hoechst Aktiengesellschaft
    Inventors: Ernst-August Albers, Bernd Sassenrath
  • Modacryl filaments and fibers and process for their manufacture
    Patent number: 4056516
    Abstract: The invention relates to modacryl filaments and fibers made from copolymers insoluble in acetone of acrylonitrile and from 20 to 45 weight % of vinylidene chloride, containing from 0 to 1.5 weight % of unsaturated organic sulfonic acids or the salts thereof, and from 0 to 10 weight % of further copolymerizable compounds, which copolymers have a K value according to Fikentscher of from about 60 to about 90, and a process for the manufacture thereof. These modacryl filaments and fibers are especially distinguished by their permanent brilliance and permanent transparence; these properties are maintained even on contact with water having a temperature above 80.degree. C.
    Type: Grant
    Filed: February 25, 1976
    Date of Patent: November 1, 1977
    Assignee: Hoechst Aktiengesellschaft
    Inventors: Ernst-August Albers, Walter Fester, Bernd Sassenrath