Patents by Inventor Gunther Walde

Gunther Walde 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).

  • Flameproof compositions of polycondensation products
    Patent number: 5047459
    Abstract: A self-extinguishing thermoplastic composition containing at least one polycondensation product, and a flame retardant which comprises a mixture of melamine with at least one adduct of an isocyanate and a lactam wherein the proportion of adduct, based on the mixture of melamine and adduct, amounts to 5-25% by weight.
    Type: Grant
    Filed: January 3, 1989
    Date of Patent: September 10, 1991
    Assignee: L. Bruggemann Komm.-GES.
    Inventor: Gunther Walde