Patents by Inventor Willi Kost

Willi Kost 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 polyurethane foam and a process for its production
    Patent number: 4223095
    Abstract: A flame-resistant polyurethane foam is obtained by treatment of the foam with a mixture of aluminium hydroxide and a carboxyl group-containing polychloroprene latex and cross-linking the latex with zinc oxide or magnesium oxide.
    Type: Grant
    Filed: November 29, 1978
    Date of Patent: September 16, 1980
    Assignee: Bayer Aktiengesellschaft
    Inventors: Heinz Esser, Hans W. Illger, Heinz Muller, Willi Kost, Alberto C. Gonzalez-Dorner