Patents by Inventor Gregory S. Jack

Gregory S. Jack 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).

  • Flame retardant blends of polysulfone and polyalkylene phthalate
    Patent number: 5151462
    Abstract: This invention relates to flame retardant blends of polysulfone, with polyalkylene phthalate. The present blends are flame retardant, even at thin part thickness.
    Type: Grant
    Filed: September 30, 1991
    Date of Patent: September 29, 1992
    Assignee: Amoco Corporation
    Inventors: Mohammad J. El-Hibri, Gregory S. Jack, William E. Kelly, Sanjay R. Patel