Patents by Inventor Robert L. Sassa

Robert L. Sassa 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).

  • Composite fiber of commingled fiberglass and polytetrafluoroethylene and method of producing same
    Patent number: 5456983
    Abstract: An improved composite fiber of fiberglass and polytetrafluoroethylene (PTFE) is provided. The composite fiber comprises a coherent strand of commingled filaments of fiberglass and PTFE which is far more resistant to flex, abrasion, and chemical attack than previous fiberglass fibers. Preferably filaments of expanded PTFE tow yarn and filaments of PTFE are combined through a process of air-jet texturing. The fibers of the present invention have a wide range of possible uses, including being formed into a fabric and employed as filter media.
    Type: Grant
    Filed: September 16, 1994
    Date of Patent: October 10, 1995
    Assignee: W. L. Gore & Associates, Inc.
    Inventor: Robert L. Sassa
  • Encapsulated felt
    Patent number: 5160773
    Abstract: A sealing material of polytetrafluoroethylene felt is encapsulated by a polytetrafluoroethylene sheet coated with a thermoplastic fluoropolymer.
    Type: Grant
    Filed: August 16, 1991
    Date of Patent: November 3, 1992
    Assignee: W. L. Gore & Associates, Inc.
    Inventor: Robert L. Sassa
  • Filter laminates
    Patent number: 4983434
    Abstract: An expanded porous polytetrafluoroethylene (PTFE) membrane is employed in laminar conjunction with an polytetrafluoroethylene felt; in which the felt is reinforced with a woven scrim.
    Type: Grant
    Filed: September 25, 1989
    Date of Patent: January 8, 1991
    Assignee: W. L. Gore & Associates, Inc.
    Inventor: Robert L. Sassa
  • Protective electromagnetically transparent window
    Patent number: 4946736
    Abstract: A weather-, moisture, and gas-resistant radome and laminate for radomes comprising layers of porous expanded polytetrafluoroethylene (EPTFE) membrane, fluorinated thermoplastic membrane, and woven EPTFE textile backing fabric. Superior electromagnetically transmission characteristics, excellent physical and electrical properties.
    Type: Grant
    Filed: May 26, 1989
    Date of Patent: August 7, 1990
    Assignee: W. L. Gore & Associates, Inc.
    Inventor: Robert L. Sassa
  • Expanded polytetrafluoroethylene tubular container
    Patent number: 4830643
    Abstract: A container for adsorbing components present in an environment, which comprises a tubular structure of expanded, porous polytetrafluoroethylene sealed at both ends, so as to encapsulate an adsorbent present with the tubular structure.
    Type: Grant
    Filed: July 13, 1988
    Date of Patent: May 16, 1989
    Assignee: W. L. Gore & Associates, Inc.
    Inventors: Robert L. Sassa, Christian E. Bailey