Patents by Inventor Ray D. Ramsay

Ray D. Ramsay 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).

  • Polyethylene terephthalate compositions with arylene sulfide random copolymers
    Patent number: 5194506
    Abstract: Polyethylene terephthalate molding compositions are provided which comprise polyethylene terephthalate, an aliphatic polyester, a warp resisting amount of an arylene sulfide copolymer, filler, and optionally, colorants.
    Type: Grant
    Filed: December 20, 1990
    Date of Patent: March 16, 1993
    Assignee: Phillips Petroleum Company
    Inventors: Howard F. Efner, Michael C. Yu, Ray D. Ramsay