Patents by Inventor Charles P. Shank

Charles P. Shank 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).

  • Impact modifier for thermoplastic compositions
    Patent number: 4277575
    Abstract: An improved impact modifier is described. The modifier is an admixture of a diblock copolymer of polystyrene/saturated rubber with a triblock copolymer of polystyrene/ethylene-butylene rubber/polystyrene which significantly improves the properties of a polyphenylene oxide and polystyrene composition.
    Type: Grant
    Filed: October 2, 1979
    Date of Patent: July 7, 1981
    Assignee: General Electric Company
    Inventors: William R. Haaf, Charles P. Shank
  • Polyphenylene ether resin compositions containing polypentenamer
    Patent number: 4164493
    Abstract: Novel compositions are disclosed which comprise a polyphenylene ether resin and polypentenamer. Also disclosed are compositions comprised of a polyphenylene ether resin, a rubber-modified alkenyl aromatic resin, and polypentenamer as well as compositions comprised of a polyphenylene ether resin and an alkenyl aromatic resin modified with polypentenamer. Included within the scope of this invention are corresponding reinforced and flame-retardant compositions.
    Type: Grant
    Filed: September 5, 1978
    Date of Patent: August 14, 1979
    Assignee: General Electric Company
    Inventors: Glenn D. Cooper, Arthur Katchman, Charles P. Shank