Patents by Inventor John Alvin Simms

John Alvin Simms 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).

  • Patent number: 4076766
    Abstract: A thermosetting acrylic enamel, useful for coating automobile and truck bumpers, flexible filler panels located between the bumper and the chassis, flexible fender extensions, and other energy absorbing parts, contains the following film-forming constituents:(A) an acrylic polymer of an alkyl acrylate having 2-8 carbon atoms in the alkyl group, and .alpha.,.beta.-ethylenically unsaturated carboxylic acid, an alkyl methacrylate having 1-18 carbon atoms in the alkyl group or mixtures of such an alkyl methacrylate and styrene, and a hydroxyalkyl acrylate or methacrylate having 2-4 carbon atoms in the alkyl group or mixtures thereof;(B) a polyester having a molecular weight not above 2,000, a hydroxyl number range of 50-150, and a glass transition temperature below 25.degree.
    Type: Grant
    Filed: December 31, 1975
    Date of Patent: February 28, 1978
    Assignee: E. I. Du Pont de Nemours and Company
    Inventor: John Alvin Simms