Patents by Inventor Keith A. Hughes

Keith A. Hughes 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).

  • Polymer processing aids
    Patent number: 8648134
    Abstract: A polymer composition comprises a polymer matrix, a first fluorine-containing processing aid, and a second processing additive system that is substantially free of fluorine and that comprises: (a) a lubricant and (b) a surfactant.
    Type: Grant
    Filed: July 23, 2010
    Date of Patent: February 11, 2014
    Assignee: Addivant USA LLC
    Inventors: Jeffrey J. Cernohous, William D. Sigworth, Hayder Zahalka, Keith A. Hughes
  • POLYMER PROCESSING AIDS
    Publication number: 20120059102
    Abstract: A polymer composition comprises a polymer matrix, a first fluorine-containing processing aid, and a second processing additive system that is substantially free of fluorine and that comprises: (a) a lubricant and (b) a surfactant.
    Type: Application
    Filed: July 23, 2010
    Publication date: March 8, 2012
    Inventors: Jeffrey J. Cernohous, William D. Sigworth, Hayder Zahalka, Keith A. Hughes
  • Extreme pressure additive for lubricants
    Patent number: 3988249
    Abstract: Antimony N-(2-octyl)-N-ethyldithiocarbamate confers extreme pressure properties on lubricants.
    Type: Grant
    Filed: February 11, 1974
    Date of Patent: October 26, 1976
    Assignee: Uniroyal Inc.
    Inventors: Richard A. Gencarelli, Keith A. Hughes, John F. Sierakowski