Patents by Inventor Barbara K. O'Rourke

Barbara K. O'Rourke 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).

  • Flash-spun sheet material
    Patent number: 8048513
    Abstract: This invention relates to improved plexifilamentary sheet material useful in protective apparel and filtration media, which material is comprised of substantially continuous polyethylene plexifilamentary fiber strands and has a Frazier Permeability, normalized to 1.0 oz/yd2 basis weight, of at least 2 cfm/ft2.
    Type: Grant
    Filed: June 28, 2010
    Date of Patent: November 1, 2011
    Assignee: E.I. du Pont de Nemours and Company
    Inventors: Robert Anthony Marin, Larry R. Marshall, Barbara K. O'Rourke
  • Flash-Spun Sheet Material
    Publication number: 20100263108
    Abstract: This invention relates to improved plexifilamentary sheet material useful in protective apparel and filtration media, which material is comprised of substantially continuous polyethylene plexifilamentary fiber strands and has a Frazier Permeability, normalized to 1.0 oz/yd2 basis weight, of at least 2 cfm/ft2.
    Type: Application
    Filed: June 28, 2010
    Publication date: October 21, 2010
    Applicant: E.I. DUPONT DE NEMOURS AND COMPANY
    Inventors: Robert Anthony Marin, Larry R. Marshall, Barbara K. O'Rourke
  • Flash-spun sheet material
    Patent number: 7744989
    Abstract: This invention relates to improved plexifilamentary sheet material useful in protective apparel and filtration media, which material is comprised of substantially continuous polyethylene plexifilamentary fiber strands and has a Frazier Permeability, normalized to 1.0 oz/yd2 basis weight, of at least 2 cfm/ft2.
    Type: Grant
    Filed: May 19, 2008
    Date of Patent: June 29, 2010
    Assignee: E. I. du Pont de Nemours and Company
    Inventors: Robert Anthony Marin, Larry R. Marshall, Barbara K. O'Rourke
  • FLASH-SPUN SHEET MATERIAL
    Publication number: 20080220681
    Abstract: This invention relates to improved plexifilamentary sheet material useful in protective apparel and filtration media, which material is comprised of substantially continuous polyethylene plexifilamentary fiber strands and has a Frazier Permeability, normalized to 1.0 oz/yd2 basis weight, of at least 2 cfm/ft2.
    Type: Application
    Filed: May 19, 2008
    Publication date: September 11, 2008
    Inventors: Robert Anthony Marin, Larry R. Marshall, Barbara K. O'Rourke