Patents by Inventor Thomas R. Price, deceased

Thomas R. Price, deceased 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).

  • Synthesis and polymerization of dithioether-linked phthalonitrile monomers
    Patent number: 5350828
    Abstract: Dithioether-linked phthalonitrile monomer are prepared by a substitution reaction between 4-nitrophthalonitrile and a dimercaptan and are polymerized to a high-temperature, oxidation-resistant polymer by heating them at a temperature above their melting point. The rate of polymerization is increased by the addition of an amine. Electrical conductivity of the polymer can be increased to the conductor range by heating the polymer above about 400.degree. C.
    Type: Grant
    Filed: December 18, 1992
    Date of Patent: September 27, 1994
    Assignee: The United States of America as represented by the Secretary of the Navy
    Inventors: Teddy M. Keller, Thomas R. Price, deceased
  • Pyrolzed amine cured polymer of dithioether-linked phthalonitrile monomer
    Patent number: 5202414
    Abstract: Dithioether-linked phthalonitrile monomer are prepared by a substitution reaction between 4-nitrophthalonitrile and a dimercaptan and are polymerized to a high-temperature, oxidation-resistant polymer by heating them at a temperature above their melting point. The rate of polymerization is increased by the addition of an amine. Electrical conductivity of the polymer can be increased to the conductor range by heating the polymer above about 400.degree. C.
    Type: Grant
    Filed: October 19, 1990
    Date of Patent: April 13, 1993
    Assignee: The United States of America as Represented by the Secretary of the Navy
    Inventors: Teddy M. Keller, Thomas R. Price, deceased
  • Polymer of dithioether-linked phthalonitrile
    Patent number: 5004801
    Abstract: Dithioether-linked phthalonitrile monomer are prepared by a substitution reaction between 4-nitrophthalonitrile and a dimercaptan and are polymerized to a high-temperature, oxidation-resistant polymer by heating them at a temperature above their melting point. The rate of polymerization is increased by the addition of an amine. Electrical conductivity of the polymer can be increased to the conductor range by heating the polymer above about 400.degree. C.
    Type: Grant
    Filed: November 21, 1988
    Date of Patent: April 2, 1991
    Assignee: The United States of America as represented by the Secretary of the Navy
    Inventors: Teddy M. Keller, Thomas R. Price, deceased