Patents by Inventor Werner Zimmt

Werner Zimmt 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).

  • Acid catalysts for low temperature cure of coating compositions
    Patent number: 4985591
    Abstract: Preparation of a semi-crystalline catalyst for curing coating compositions wherein an isocyanate-sulfonate or -phosphonate is made by a Michael addition followed by chain extension with an isocyanate.
    Type: Grant
    Filed: August 15, 1988
    Date of Patent: January 15, 1991
    Assignee: E. I. du Pont de Nemours and Company
    Inventors: Jozef T. Huybrechts, Werner Zimmt