Patents by Inventor Wiprecht Eberius

Wiprecht Eberius 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).

  • Process for melt-spinning filaments from nozzles coated with stabilized silicone oil
    Patent number: 4034034
    Abstract: A process for melt-spinning a synthetic linear fiber-forming polymer into filaments by extrusion through a nozzle or so-called nozzle plate treated on its discharge face with a thin layer silicone oil coating wherein said coating is stabilized with a cerium compound. The stabilizing composition or additive preferably consists essentially of the reaction product of a cerium compound with a polymethylsiloxane bearing reactive hydrogen atoms.
    Type: Grant
    Filed: October 15, 1974
    Date of Patent: July 5, 1977
    Assignee: Akzona Incorporated
    Inventors: Wiprecht Eberius, Herbert Lorenz
  • Method of producing polyurethane filaments
    Patent number: 3979363
    Abstract: Polyurethane elastomeric filaments of improved physical properties and chemical resistance prepared by preforming the filamentary material such that the polyurethane contains at least about 100 up to about 700 milliequivalents/kilogram of reactive terminal amino groups, and then aftertreating this preformed filamentary polyurethane, optionally under simultaneous stretching, with an organic polyisocyanate and then preferably heating the treated material at an elevated temperature above about 140.degree.C. The polyurethane filamentary product is particularly useful in providing durable elastic filaments, fibers, threads, yarns, fabrics and similar textile materials.
    Type: Grant
    Filed: November 7, 1973
    Date of Patent: September 7, 1976
    Assignee: Akzo N.V.
    Inventors: Wiprecht Eberius, Gerhard Wick, Heinz Grotjahn, Eckart Jacobs