Patents by Inventor Norman W. Franke

Norman W. Franke 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).

  • Polyepoxy resin-diaryl dianhydride laminating resins and laminates
    Patent number: 4132697
    Abstract: A stable diaryl dianhydride-epoxy resin solution for preparing handleable, formable resin-impregnated reinforcing material and fully cured laminates. A non-viscous solution of 3,4,3',4'-benzophenone tetracarboxylic dianhydride and the reaction product of epichlorohydrin and bisphenol A is obtained in acetone.
    Type: Grant
    Filed: June 10, 1976
    Date of Patent: January 2, 1979
    Assignee: Gulf Research & Development Company
    Inventors: Walter P. Barie, Jr., Norman W. Franke
  • Polyepoxy resin-diaryl dianhydride laminating resins and laminates
    Patent number: 3996185
    Abstract: A stable diaryl dianhydride-epoxy resin solution for preparing handleable, formable resin-impregnated reinforcing material and fully cured laminates. A non-viscous solution of 3,4,3',4'-benzophenone tetracarboxylic dianhydride and the reaction product of epichlorohydrin and bisphenol A is obtained in acetone.
    Type: Grant
    Filed: December 9, 1974
    Date of Patent: December 7, 1976
    Assignee: Gulf Research & Development Company
    Inventors: Walter P. Barie, Jr., Norman W. Franke