Patents by Inventor Charles F. Paddock

Charles F. Paddock 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).

  • Polycarbonate compositions with improved low temperature impact strength
    Patent number: 4550138
    Abstract: Polycarbonate resin blended with 3-40% of AES graft copolymer containing 30-80% rubber has high impact strength without substantial loss in heat distortion temperature.
    Type: Grant
    Filed: April 23, 1984
    Date of Patent: October 29, 1985
    Assignee: Uniroyal, Inc.
    Inventors: Charles F. Paddock, John M. Wefer
  • Laminate with skin based on AES graft copolymer
    Patent number: 4440825
    Abstract: A laminate having at least two layers, one of which comprises an AES graft copolymer composition, the other layer being a rigid foamed plastic.
    Type: Grant
    Filed: August 9, 1982
    Date of Patent: April 3, 1984
    Assignee: Uniroyal, Inc.
    Inventor: Charles F. Paddock
  • High impact strength styrene-acrylonitrile resin blend
    Patent number: 4264747
    Abstract: High impact strength gum plastics are prepared by blending a styrene acrylonitrile resin with a styrene-ethylene-butylene-styrene block copolymer which has grafted on to it an acrylonitrile resin; preferably styrene acrylonitrile.
    Type: Grant
    Filed: July 14, 1980
    Date of Patent: April 28, 1981
    Assignee: Uniroyal, Inc.
    Inventor: Charles F. Paddock
  • Method of making graft polymers
    Patent number: 4166081
    Abstract: Graft copolymers of resin-forming monomers on monoolefin-type rubber spines, particularly ethylene-propylene-non-conjugated diene rubber spines, are made in solution with the aid of a free radical polymerization initiator. The graft copolymers have high impact strength.
    Type: Grant
    Filed: December 5, 1977
    Date of Patent: August 28, 1979
    Assignee: Uniroyal, Inc.
    Inventors: Albert A. Fournier, Jr., Charles F. Paddock