Patents by Inventor Peter Shapras

Peter Shapras 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: 4138447
    Abstract: Polymer compositions comprising a nitrogenous polymer, especially an acrylonitrile-containing polymer, and a halogen-containing flame retardant evolve reduced amounts of hydrogen cyanide on combustion when containing an alkaline earth metal oxide and sulfur.
    Type: Grant
    Filed: December 5, 1977
    Date of Patent: February 6, 1979
    Assignee: Monsanto Company
    Inventors: Gary L. Deets, Peter Shapras
  • Patent number: 4097552
    Abstract: Polymer compositions comprising a nitrogenous polymer, especially an acrylonitrile-containing polymer, evolve reduced amounts of hydrogen cyanide on combustion when containing an alkaline earth metal oxide and sulfur.
    Type: Grant
    Filed: June 20, 1977
    Date of Patent: June 27, 1978
    Assignee: Monsanto Company
    Inventors: Gary L. Deets, Peter Shapras
  • Patent number: 4052348
    Abstract: Improved molding compositions especially adapted for fabrication into packaging materials, which compositions comprise an intimate blend of a nitrile polymer and a formaldehyde compound.
    Type: Grant
    Filed: January 15, 1973
    Date of Patent: October 4, 1977
    Assignee: Monsanto Company
    Inventors: Alva F. Harris, Peter Shapras