Patents by Inventor Kathryn L. Williams

Kathryn L. Williams 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).

  • Blend of fluorochemical guanidines and poly(oxyalkylenes)
    Patent number: 4565641
    Abstract: Blends of fluoroaliphatic radical-containing, substituted guanidines and fluoroaliphatic radical-containing poly(oxyalkylenes) useful in the form of organic solutions or aqueous dispersions in the treatment of fibrous substrates, such as textile fibers, to impart oil and water repellency.
    Type: Grant
    Filed: July 24, 1984
    Date of Patent: January 21, 1986
    Assignee: Minnesota Mining and Manufacturing Company
    Inventors: John C. Chang, Kathryn L. Williams