Patents by Inventor Josefa Risch

Josefa Risch 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).

  • Electrically conductive thermoplastic composite materials and a process for their preparation
    Patent number: 5736603
    Abstract: The invention relates to electrically conductive thermoplastic composite materials which have specific volume resistances of less than 10.sup.9 ohm cm and comprise 0.1 to 70% by volume of electrically conductive fibers impregnated with a thermoplastic elastomer, to a process for their preparation and to their use.
    Type: Grant
    Filed: August 14, 1995
    Date of Patent: April 7, 1998
    Assignee: Hoechst AG
    Inventors: Bernhard Pfeiffer, Joachim Heydweiller, Josefa Risch