Patents by Inventor Eric Keith Propst

Eric Keith Propst 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).

  • Filtration Article With Fluoropolymer Knit
    Publication number: 20190240603
    Abstract: Disclosed is a filtration article comprising a first layer comprising porous PTFE for fluid filtration (e.g., a PTFE membrane), and a second layer comprising strands of fluoropolymer fibers arranged to form a stable knit. The knit layer comprises interlocking regions that are each defined by corresponding sets of at least two interlocking loop portions of the fluoropolymer fiber strands. In filtration article embodiments, the fluoropolymer fiber strands may be twisted and/or have a rounded outer configuration. The knit layer provides improved dimensional stability as a support layer for the filtration layer and/or as a drainage layer.
    Type: Application
    Filed: July 22, 2013
    Publication date: August 8, 2019
    Inventors: Eric Keith Propst, Steven H. Speck
  • Filtration article with fluoropolymer knit
    Patent number: 10350529
    Abstract: Disclosed is a filtration article comprising a first layer comprising porous PTFE for fluid filtration (e.g., a PTFE membrane), and a second layer comprising strands of fluoropolymer fibers arranged to form a stable knit. The knit layer comprises interlocking regions that are each defined by corresponding sets of at least two interlocking loop portions of the fluoropolymer fiber strands. In filtration article embodiments, the fluoropolymer fiber strands may be twisted and/or have a rounded outer configuration. The knit layer provides improved dimensional stability as a support layer for the filtration layer and/or as a drainage layer.
    Type: Grant
    Filed: July 22, 2013
    Date of Patent: July 16, 2019
    Assignee: Entegris, Inc.
    Inventors: Eric Keith Propst, Steven H. Speck
  • Filtration Article With Fluoropolymer Knit
    Publication number: 20140021145
    Abstract: Disclosed is a filtration article comprising a first layer comprising porous PTFE for fluid filtration (e.g., a PTFE membrane), and a second layer comprising strands of fluoropolymer fibers arranged to form a stable knit. The knit layer comprises interlocking regions that are each defined by corresponding sets of at least two interlocking loop portions of the fluoropolymer fiber strands. In filtration article embodiments, the fluoropolymer fiber strands may be twisted and/or have a rounded outer configuration. The knit layer provides improved dimensional stability as a support layer for the filtration layer and/or as a drainage layer.
    Type: Application
    Filed: July 22, 2013
    Publication date: January 23, 2014
    Applicant: W. L. Gore & Associates, Inc.
    Inventors: Eric Keith Propst, Steven H. Speck