Patents by Inventor Jimmy L. Ryans

Jimmy L. Ryans 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).

  • Vacuum system for controlling pressure in a polyester process
    Patent number: 5753190
    Abstract: The present invention discloses a polymerization system having at least two reaction chambers wherein vacuum is used to remove vapors therefrom comprising a single vacuum system for supplying vacuum in increasing amounts to successive reaction chambers. Also disclosed is a polymerization process having at least first and second reaction chambers in which the pressure is decreased successively from said first chamber to a final chamber.
    Type: Grant
    Filed: July 21, 1995
    Date of Patent: May 19, 1998
    Assignee: Eastman Chemical Company
    Inventors: Douglas M. Haseltine, Thomas L. Yount, Jimmy L. Ryans
  • Vaccum system for controlling pressure in a polyester process
    Patent number: 5466765
    Abstract: The present invention discloses a polymerization system having at least two reaction chambers wherein vacuum is used to remove vapors therefrom comprising a single vacuum system for supplying vacuum in increasing amounts to successive reaction chambers.
    Type: Grant
    Filed: March 9, 1995
    Date of Patent: November 14, 1995
    Assignee: Eastman Chemical Company
    Inventors: Douglas M. Haseltine, Thomas L. Yount, Jimmy L. Ryans