Patents by Inventor Gary W. Dirks

Gary W. Dirks 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 preparing low-cost copolymers from acrylonitrile and crude indene
    Patent number: 4121807
    Abstract: Polymeric compositions having high heat-distortion temperatures which function as gas and vapor barrier materials which are composed of an olefinically unsaturated nitrile, such as acrylonitrile, and indene are produced by the copolymerization of said olefinically unsaturated nitrile and crude indene which can be derived from various sources.
    Type: Grant
    Filed: April 25, 1977
    Date of Patent: October 24, 1978
    Assignee: The Standard Oil Company
    Inventors: Gary W. Dirks, George S. Li, Irving Rosen
  • Acrylonitrile-vinyl ether-indene or coumarone polymers
    Patent number: 4091199
    Abstract: Polymer resins which are relatively high softening and function as gas and vapor barrier materials are composed of an olefinically unsaturated nitrile, such as acrylonitrile, a vinyl ether, such as butyl vinyl ether, and indene or coumarone.
    Type: Grant
    Filed: December 20, 1976
    Date of Patent: May 23, 1978
    Assignee: The Standard Oil Company
    Inventors: George S. Li, Gary W. Dirks
  • Cross-linked water-swellable indene-maleic anhydride interpolymers
    Patent number: 4090998
    Abstract: Polymers which are water swellable in the form of their salts are prepared by polymerization of a monomeric mixture of maleic anhydride, indene and a cross-linking monomer containing a plurality of CH.sub.2 .dbd.C< groupings.
    Type: Grant
    Filed: November 26, 1976
    Date of Patent: May 23, 1978
    Assignee: The Standard Oil Company
    Inventors: Gary W. Dirks, George S. Li, John F. Jones
  • Rubber-modified acrylonitrile-vinyl ether-indene polymers
    Patent number: 4082819
    Abstract: Polymer resins which are impact resistant, have high flexural strengths, are relatively high softening and function as gas and vapor barrier materials are composed of an olefinically unsaturated nitrile, such as acrylonitrile, a vinyl ether, such as butyl vinyl ether, indene and a conjugated diene rubber, such as an acrylonitrile-butadiene copolymer.
    Type: Grant
    Filed: March 2, 1977
    Date of Patent: April 4, 1978
    Assignee: The Standard Oil Company
    Inventors: George S. Li, Gary W. Dirks