Patents by Inventor Irene Dris

Irene Dris 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).

  • Method of coagulating and isolating graft copolymers from latices
    Patent number: 6156875
    Abstract: Graft copolymer particles comprising an elastomeric base polymer such as polybutadiene and grafted chains of a thermoplastic, non-elastomeric polymer such as styrene-acrylonitrile are coagulated for isolation from aqueous emulsion by subjecting the emulsion to mechanical shear in the absence of chemical coagulants at a temperature greater than or equal to the glass transition temperature of the thermoplastic, non-elastomeric portion of the copolymer.
    Type: Grant
    Filed: June 25, 1998
    Date of Patent: December 5, 2000
    Assignee: General Electric Company
    Inventors: Sadhan Chandra Jana, Irene Dris, Gary Stephen Balch