Patents by Inventor George Phillip Speranza

George Phillip Speranza 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).

  • Polymer-prepolymer composition prepared by polymerizing an ethylenically unsaturated monomer in the presence of an isocyanate-terminated prepolymer
    Patent number: 3968089
    Abstract: Novel isocyanate-terminated polyether-based polymer prepolymers useful in urethane applications are produced by polymerization of one or more ethylenically unsaturated monomers in the presence of an isocyanate-terminated prepolymer obtained by reaction of an organic polyisocyanate with a polyhydroxy-containing adduct obtained by reacton of an alkylene oxide with a polyfunctional initiator containing two to six active hydrogen atoms. These isocyanate-terminated polyether-based polymers prepolymer compositions are useful in the preparation of flexible urethane foams and moisture-cured adhesives.
    Type: Grant
    Filed: November 18, 1974
    Date of Patent: July 6, 1976
    Assignee: Jefferson Chemical Company, Inc.
    Inventors: Michael Cuscurida, George Phillip Speranza