Patents by Inventor Thomas E. Denny

Thomas E. Denny 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).

  • Fibrillated polytetrafluoroethylene woven filter fabric
    Patent number: 4025679
    Abstract: The product of the present invention is a fabric woven from oriented polytetrafluoroethylene (PTFE) strands, in which the strands of the weave are interconnected by a multiplicity of fine PTFE fibrils. To produce this fabric, consisting entirely of PTFE, a woven PTFE fabric is heated substantially unrestrained to a temperature above the crystalline melt point of PTFE and stretched. Alternatively, a woven PTFE fabric may be impregnated with other fluorocarbon polymers, heated substantially unrestrained to a temperature above the crystalline melt point of PTFE, and subsequently stretched, thereby generating a multiplicity of fine fibrils interconnecting the weave.
    Type: Grant
    Filed: August 6, 1976
    Date of Patent: May 24, 1977
    Assignee: W. L. Gore & Associates, Inc.
    Inventor: Thomas E. Denny