Patents by Inventor Gary Mack Pittman

Gary Mack Pittman 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).

  • Valve with perfluoroelastomer packing
    Patent number: 5788216
    Abstract: Valves having a stem packing of alternating layers of perfluoroelastomer and high temperature polymer provide outstanding sealing performance against corrosive fluids and high temperatures.
    Type: Grant
    Filed: May 1, 1996
    Date of Patent: August 4, 1998
    Assignee: E. I. du Pont de Nemours and Company
    Inventors: Gary Mack Pittman, Kenneth Alan Senior, John Neal Strunk, Krishnan Ramalingam Thondukolam