Patents by Inventor Dewey L. Kerbow

Dewey L. Kerbow 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).

  • Low-melting tetrafluoroethylene copolymer
    Patent number: 6197904
    Abstract: Copolymers of tetrafluoroethylene and ethylene having modifiers comprising perfluoro(alkyl vinyl ether) have low melting points. The copolymers also have low flex modulus.
    Type: Grant
    Filed: February 2, 1999
    Date of Patent: March 6, 2001
    Assignee: E. I. du Pont de Nemours and Company
    Inventors: Subash V. Gangal, Dewey L. Kerbow, Robert G. Brown, Patrick E. Lindner, Scot David Pedersen
  • Grafted fluoropolymer powders
    Patent number: 5576106
    Abstract: Compounds containing polar functional entities can be grafted onto the surface of fluoropolymer powders to obtain grafted fluoropolymer powders having modified surface characteristics but without modifying the bulk of the polymer in the particle. The grafted fluoropolymer powder is effective in such uses as an adhesive to join dissimilar materials.
    Type: Grant
    Filed: July 28, 1994
    Date of Patent: November 19, 1996
    Assignee: E. I. Du Pont de Nemours and Company
    Inventors: Dewey L. Kerbow, Hermann Jenewein
  • Low smoke and flame-resistant composition
    Patent number: 4963609
    Abstract: A low smoke and flame-resistant fluoropolymer composition, useful as insulation in a plenum cable and comprised of a base polymer of ethylene units, tetrafluoroethylene and/or chlorotrifluoroethylene units, and fluorine-containing, non-telogenic termonomer units; a metal oxide; and a polytetrafluoroethylene drip suppressant.
    Type: Grant
    Filed: November 1, 1989
    Date of Patent: October 16, 1990
    Assignee: E. I. Du Pont de Nemours and Company
    Inventors: Jerrel C. Anderson, Subhash V. Gangal, Dewey L. Kerbow, Charles W. Stewart
  • Stable tetrafluoroethylene copolymers
    Patent number: 4743658
    Abstract: A tetrafluoroethylene/perfluoro(alkyl vinyl)ether copolymer substantially free of unstable end groups and extractable fluoride that cause corrosion of metal surfaces.
    Type: Grant
    Filed: October 21, 1985
    Date of Patent: May 10, 1988
    Assignee: E. I. Du Pont de Nemours and Company
    Inventors: John F. Imbalzano, Dewey L. Kerbow
  • Heat reflective polymer blends
    Patent number: 4629756
    Abstract: A radiant heat reflective composition comprising a blend of a tetrafluoroethylene copolymer and copper flake.
    Type: Grant
    Filed: November 4, 1985
    Date of Patent: December 16, 1986
    Assignee: E. I. Du Pont de Nemours and Company
    Inventor: Dewey L. Kerbow
  • Heat stable tetrafluoroethylene-perfluoro(alkyl vinyl ether) copolymers
    Patent number: 4599386
    Abstract: A tetrafluoroethylene-perfluoro(alkyl vinyl ether copolymer in which heat unstable carbinol end-groups (--CH.sub.2 OH groups) present have been protected against heat degradation by treating the copolymer with NH.sub.3 or NH.sub.3 producing compounds.
    Type: Grant
    Filed: October 18, 1984
    Date of Patent: July 8, 1986
    Assignee: E. I. Du Pont de Nemours and Company
    Inventors: Dana P. Carlson, Dewey L. Kerbow, Thomas J. Leck, Allan H. Olson