Patents by Inventor Willie J. Sessions

Willie J. Sessions 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).

  • Polyurethane oligomer impact and shrinkage modifiers for thermoset polyesters
    Patent number: 4421894
    Abstract: The polyurethane oligomer reaction product of an isocyanate-terminated prepolymer with an isocyanate-reactive unsaturated monomer is incorporated into conventional thermosetting polyester resin formulations to impart improved impact properties and reduced shrinkage behavior.
    Type: Grant
    Filed: November 24, 1980
    Date of Patent: December 20, 1983
    Assignee: Olin Corporation
    Inventors: James M. O'Connor, Donald L. Lickei, Willie J. Sessions
  • Modified polyurethane liquid polymer compositions
    Patent number: 4233205
    Abstract: A novel, heat curable, liquid polymer composition is disclosed which comprises a modified urethane oligomer containing ethylenic unsaturation, a free radical catalyst, a polyfunctional mercaptan, and a filler.
    Type: Grant
    Filed: March 26, 1979
    Date of Patent: November 11, 1980
    Assignee: Olin Corporation
    Inventors: James M. O'Connor, Willie J. Sessions