Patents by Inventor Silvestro Cartasegna

Silvestro Cartasegna 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).

  • Dynamically vulcanized alloys of crystalline polyolefin resin and halobutyl rubber material
    Patent number: 5021500
    Abstract: Thermoplastic polyolefin (TPO) compositions which have superior long-term heat aging characteristics are prepared by blending a crystalline thermoplastic resin with a halobutyl rubber under conditions of dynamic vulcanization and in the presence of a maleimide curative.
    Type: Grant
    Filed: May 24, 1990
    Date of Patent: June 4, 1991
    Assignee: Exxon Chemical Company
    Inventors: Robert C. Puydak, Donald R. Hazelton, Silvestro Cartasegna, Leonard Dogniez
  • Elastomer modified polycarbonate compositions of improved impact strength
    Patent number: 4883840
    Abstract: Polycarbonate and blends of polycarbonate with polyalkylene terephthalate are improved in impact properties by incorporation of a modifier comprising an EPM and/or EPDM elastomer in combination with an ethylene homo- or copolymer plastics component such as HDPE.
    Type: Grant
    Filed: December 17, 1987
    Date of Patent: November 28, 1989
    Assignee: Exxon Chemical Patents Inc.
    Inventor: Silvestro Cartasegna