Patents by Inventor Robert A. Kunz

Robert A. Kunz 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).

  • Process for preparing sulfonylureas
    Patent number: 4546179
    Abstract: Sulfonylureas are prepared by contacting a sulfonyl halide with an ammonium, phosphonium, sulfonium, or an alkali metal cyanate salt in the presence of an amine.
    Type: Grant
    Filed: September 6, 1984
    Date of Patent: October 8, 1985
    Assignee: E. I. Du Pont de Nemours and Company
    Inventor: Robert A. Kunz