Patents by Inventor Andreas Lippman

Andreas Lippman 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).

  • High-speed false-twist texturing process
    Patent number: 6426141
    Abstract: The invention relates to a process for the high-speed false twist texturing of yarns of synthetic filaments, in which a finish containing at least one water-soluble lubricant (A) and one water-insoluble liquid (B) with a viscosity of 2 to 50 mPas at 20° C. is applied to the yarns in the form of an aqueous emulsion, after which the filaments are textured on the false twist principle in texturing machines with a short high-temperature heater.
    Type: Grant
    Filed: July 23, 1999
    Date of Patent: July 30, 2002
    Assignee: Cognis Deutschland GmbH & Co. KG
    Inventors: Raymond Mathis, Norbert Bialas, Andreas Lippman