Patents by Inventor Francis D. Thomson

Francis D. Thomson 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 foam compositions
    Patent number: 4036790
    Abstract: Rigid polyurethane foams are disclosed which comprise urea-modified resole-based polyols.
    Type: Grant
    Filed: May 8, 1975
    Date of Patent: July 19, 1977
    Assignee: Owens-Corning Fiberglas Corporation
    Inventor: Francis D. Thomson
  • Fire retardant polyurethane foams
    Patent number: 3943077
    Abstract: Flame retardant polyurethane foams are disclosed. Flame resistance is achieved by a combination of at least three polyols. Control of internal exotherm is achieved by the addition to the foams of an inorganic material such as hydrated alumina.
    Type: Grant
    Filed: January 6, 1975
    Date of Patent: March 9, 1976
    Assignee: Owens-Corning Fiberglas Corporation
    Inventors: Reuben H. Bell, Russell M. Boardway, Jr., Francis D. Thomson, Donald C. Wysocki