Patents by Inventor Charles R. Finch

Charles R. Finch 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).

  • Highly impact resistant carbonate polymer blends
    Patent number: 4544706
    Abstract: Carbonate polymer compositions comprise extruded blends of a carbonate polymer and a copolymer consisting essentially of a monovinylidene aromatic comonomer and an .alpha.,.beta.-ethylenically unsaturated comonomer having a polar group. Optionally, a small amount of monovinylidene copolymer can be blended with said composition. Such compositions exhibit high impact strengths, improve the melt processability of the carbonate polymer and are advantageously highly transparent and exhibit low haze.
    Type: Grant
    Filed: November 14, 1983
    Date of Patent: October 1, 1985
    Assignee: The Dow Chemical Company
    Inventors: Charles R. Finch, Leslie E. Wallace, Thomas E. Evans