Patents by Inventor Herman C. DenHartog

Herman C. DenHartog 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: 4529765
    Abstract: A coating composition which cures at ambient temperatures of 20-80% by weight of a binder and 80-20% by weight of a solvent for the binder, the binder contains:A. an acrylic amino ester polymer of polymerized monomers of methyl methacrylate and monomers from the group of alkyl methacrylate and alkyl acrylate each having 2-12 carbon atoms in the alkyl group and the polymer has pendent amino ester or hydroxy amino ester groups wherein the amine group is a primary; andB.
    Type: Grant
    Filed: April 9, 1984
    Date of Patent: July 16, 1985
    Assignee: E. I. Du Pont de Nemours and Company
    Inventors: Herman C. DenHartog, Aloysius N. Walus
  • Patent number: 4525521
    Abstract: A coating composition which cures at ambient temperatures of 20-80% by weight of a binder and 80-20% by weight of a solvent for the binder, the binder contains about:A. 60-80% by weight, based on the weight of the binder, of an acrylic polymer of polymerized monomers of methyl methacrylate and an alkyl methacrylate, an alkyl acrylate or mixtures thereof, each having 2-12 carbon atoms in the alkyl group and the polymer has pendent amino ester or hydroxy amino ester groups;B. 20-40% by weight, based on the weight of the binder, of a glycidyl acrylic crosslinking polymer of polymerized monomers of glycidyl methacrylate or glycidyl acrylate and an alkyl methacrylate, alkyl acrylate or mixtures thereof, each having 2-12 carbon atoms in the alkyl group.The composition is useful as an exterior finish for automobiles and trucks and for repairing finishes of automobiles and trucks.
    Type: Grant
    Filed: July 27, 1984
    Date of Patent: June 25, 1985
    Assignee: E. I. Du Pont de Nemours and Company
    Inventors: Herman C. DenHartog, Aloysius N. Walus