Patents by Inventor James L. O'Kane

James L. O'Kane 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 the production of acrylonitrile-propylene copolymers
    Patent number: 4577008
    Abstract: Copolymers of acrylonitrile and propylene are produced by the process of the instant invention. This process comprises polymerizing (1) a major portion of an olefinically unsaturated nitrile monomer with (2) a minor portion of propylene, in the presence of a free radical initiator, while maintaining the molar ratio of propylene to the olefinically unsaturated nitrile during polymerization at a ratio greater than the molar ratio of propylene to the olefinically unsaturated nitrile in the final polymer.
    Type: Grant
    Filed: June 27, 1984
    Date of Patent: March 18, 1986
    Assignee: The Standard Oil Company
    Inventors: Kenneth C. Benton, James L. O'Kane
  • Process for improvement of impact strength in rubber-modified nitrile thermoplastics
    Patent number: 3959411
    Abstract: Improved impact strength of copolymers of acrylonitrile and styrene prepared in the presence of a diene rubber is achieved by presoaking the diene rubber with part of the acrylonitrile and styrene monomers prior to conducting the graft polymerization reaction.
    Type: Grant
    Filed: October 31, 1973
    Date of Patent: May 26, 1976
    Assignee: Standard Oil Company
    Inventors: June T. Duke, B. Frank Vincent, Jr., Bruce O. Budinger, James L. O'Kane