Patents by Inventor Raymond T. Friel

Raymond T. Friel 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).

  • End capped fibrous filter making
    Patent number: 5472537
    Abstract: Bonded end capped tubular or cylindrical filter elements are formed by fusing a fibrous mass of non-woven, intertwining, mechanically entangled, synthetic polymeric, microfibers possessing a temperature of dimensional heat instability and end caps formed from a dynamic vulcanizate comprising ethylene-propylene-diene-monomer (EPDM) rubber particles dispersed in a polypropylene matrix wherein the fused end capped filter exhibits minimal fiber pull back.
    Type: Grant
    Filed: April 20, 1995
    Date of Patent: December 5, 1995
    Assignee: Pall Corporation
    Inventors: Raymond T. Friel, Colin F. Harwood
  • Helical wrapped filter element
    Patent number: 5290446
    Abstract: An element for treating a fluid flowing through the element which comprises at least two filter medium layers helically wrapped around a pervious, hollow tube, with the filter medium layers forming an overall graded pore structure for the fluid treatment element and/or at least one diffusion layer positioned between the filter medium layers.
    Type: Grant
    Filed: June 10, 1992
    Date of Patent: March 1, 1994
    Assignee: Pall Corporation
    Inventors: Peter J. Degen, Colin F. Harwood, Clemens C. von Reitzenstein, Stephen A. Geibel, Raymond T. Friel