Patents by Inventor K. Robert Huffman

K. Robert Huffman 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).

  • Carboxy hydroxamic acid polymers and their use as detergent additives
    Patent number: 4874539
    Abstract: Polymeric carboxy hydroxamic acids useful as detergent additives are disclosed which are advantageously prepared from polyacrylic acid by first dehydrating the polyacrylic acid to form polyacrylic anhydride followed by reaction with a hydroxylamine compound.
    Type: Grant
    Filed: August 6, 1987
    Date of Patent: October 17, 1989
    Assignee: American Cyanamid Company
    Inventor: K. Robert Huffman