Patents by Inventor Klaus Weisskopf

Klaus Weisskopf 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).

  • Flame resistant, low pilling polyester fiber
    Patent number: 5180793
    Abstract: The invention is a polyester and a method for producing a polyester filament which has a combination of flame resistance and low pilling properties. The method comprises forming a polyester polymer from a mixture of two polymers, the first compound being the reaction product of terephthalic acid or dimethyl terephthalate, ethylene glycol, and an oxysilicon compound and the second compound being the reaction product of terephthalic acid or dimethyl terephthalate, ethylene glycol and a phosphinic acid in the amount between 0.5 and 20 mole percent of the terephthalate acid and monomer. In particular, the invention also comprises the enhanced fiber formed by the process, as well as the fabrics having a pilling of about 3 to less than 5 as measured in accordance with ASTM D-3512-82.
    Type: Grant
    Filed: December 31, 1991
    Date of Patent: January 19, 1993
    Assignee: Hoechst Celanese Corporation
    Inventors: Richard E. Vigneault, William S. Wagner, Klaus Weisskopf, R. Edward Williamson, A. John Woodward