Patents by Inventor Paula S. Weissberger

Paula S. Weissberger 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).

  • Radiation sterilizable propylene polymer compositions and articles manufactured therefrom
    Patent number: 4666959
    Abstract: A propylene polymer molding composition which is resistant to discoloration and losses in physical properties upon sterilization by high energy radiation is comprised of a blend of a propylene polymer with small amounts of a polymeric hindered amine, an alkyl phosphite and a specific hindered phenolic antioxidant as necessary additives.
    Type: Grant
    Filed: December 10, 1985
    Date of Patent: May 19, 1987
    Assignee: El Paso Products Company
    Inventors: Paula S. Weissberger, Bennie M. Lucas
  • Additive-containing polyolefin beads and process for their preparation
    Patent number: 4452928
    Abstract: The invention provides an additive-containing polyolefin having an inner bead of a first polyolefin and an outer adherent coating of a second polyolefin encapsulating the additive.
    Type: Grant
    Filed: November 8, 1982
    Date of Patent: June 5, 1984
    Assignee: El Paso Polyolefins Company
    Inventors: Charles A. Trischman, Paula S. Weissberger, Robert B. Steinert