Patents by Inventor Danielle R. Joyce

Danielle R. Joyce 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).

  • Silicone-polycarbonate block copolymers and polycarbonate blends having reduced haze, and method for making
    Patent number: 5530083
    Abstract: A method is provided for making silicone polycarbonate block copolymers and polycarbonate blends thereof having reduced haze. Silicone polycarbonate block copolymer formation is effected by using a phase transfer catalyst to generate polycarbonate oligomers having at least one terminal haloformate group followed by the late addition of hydroxyaryl terminated polydiorganosiloxane.
    Type: Grant
    Filed: July 21, 1994
    Date of Patent: June 25, 1996
    Assignee: General Electric Company
    Inventors: Peter D. Phelps, Eugene P. Boden, Gary C. Davis, Danielle R. Joyce, James F. Hoover