Patents by Inventor John S. Parent

John S. Parent 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).

  • CROSSLINKED POLYMER PARTICLES
    Publication number: 20110021711
    Abstract: The present invention is crosslinked polymer particles, prepared from a free-radical activated reaction of an unsaturated coagent and low molecular weight hydrocarbons or certain polymers. This invention allows particles to be made from mixtures of coagents and saturated compounds. The invention is also a process for preparing crosslinked polymer particles.
    Type: Application
    Filed: March 31, 2009
    Publication date: January 27, 2011
    Applicants: Queen's University at Kingston, Dow Global Technologies Inc.
    Inventors: John S. Parent, Saurav S. Sengupta, Bharat I. Chaudhary, Jeffrey M. Cogen
  • Hydrogenation of diene copolymers
    Patent number: 5561197
    Abstract: A process is provided for the hydrogenation of carbon-carbon double bonds in polymers by treatment of the polymer in solution with hydrogen in the presence of osmium-based catalysts.
    Type: Grant
    Filed: June 27, 1995
    Date of Patent: October 1, 1996
    Assignee: University of Waterloo
    Inventors: Garry L. Rempel, Neil T. McManus, John S. Parent