Patents by Inventor Manfred Gurtler

Manfred Gurtler 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).

  • Expandable polystyrene particles
    Patent number: 5985943
    Abstract: The present invention relates to expandable polystyrene beads containing blowing agent which are coated with from 0.01 to 0.5% by weight of a hydrophobicizing agent which melts above 25.degree. C. and has a mean particle size of less than 100 .mu.m. The beads can be converted into foam moldings having reduced water absorption capacity.
    Type: Grant
    Filed: November 12, 1998
    Date of Patent: November 16, 1999
    Assignee: Basf Aktiengesellschaft
    Inventors: Klaus Hahn, Horst Steinbrecher, Dieter Naegele, Achim Loffler, Manfred Gurtler, Hagen Schmitt, Jurgen Reichert