Patents by Inventor Mark W. Witman

Mark W. Witman 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 modified polycarbonates
    Patent number: 4378449
    Abstract: Polycarbonates having improved impact performance are provided, comprising a blend of polycarbonate resin and an acrylic rubber interpolymer composite.
    Type: Grant
    Filed: September 21, 1981
    Date of Patent: March 29, 1983
    Assignee: Mobay Chemical Corporation
    Inventor: Mark W. Witman
  • Impact modified polycarbonates
    Patent number: 4299928
    Abstract: Polycarbonates having improved impact performance are provided, comprising a blend of polycarbonate resin and an acrylic rubber interpolymer composite.
    Type: Grant
    Filed: March 14, 1980
    Date of Patent: November 10, 1981
    Assignee: Mobay Chemical Corporation
    Inventor: Mark W. Witman