Patents by Inventor Kurt Rappold

Kurt Rappold 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).

  • Finely divided, expandable styrene polymers
    Patent number: 5124365
    Abstract: Expandable styrene polymers having a particle diameter of from 0.025 to 0.3 mm and coated with 0.5% by weight or more of a finely divided solid having a melting point above 120.degree. C. are used as a heat-insulating filler for lightweight plaster.
    Type: Grant
    Filed: March 28, 1991
    Date of Patent: June 23, 1992
    Assignee: BASF Aktiengesellschaft
    Inventors: Kurt Rappold, Horst Steinbrecher, Manfred Walter