Patents by Inventor Steve A. Ratcliff

Steve A. Ratcliff 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).

  • Roofing underlayment and method of producing same
    Patent number: 7977259
    Abstract: A roofing membrane suitable for use as an underlayment comprising a flexible, non-woven mat of polymeric fibers which are substantially uniformly dispersed throughout the non-woven mat and thermally bonded together at the points of intersection by the polymeric materials of the fibers, the mat having a top side and a bottom side, a layer of an asphaltic material being disposed on the bottom side of the mat to provide a coated mat and a liquid parting agent applied to the top side of the mat.
    Type: Grant
    Filed: September 10, 2008
    Date of Patent: July 12, 2011
    Inventors: Steve A. Ratcliff, Shaik Mohseen
  • ROOFING UNDERLAYMENT AND METHOD OF PRODUCING SAME
    Publication number: 20090011675
    Abstract: A roofing membrane suitable for use as an underlayment comprising a flexible, non-woven mat of polymeric fibers which are substantially uniformly dispersed throughout the non-woven mat and thermally bonded together at the points of intersection by the polymeric materials of the fibers, the mat having a top side and a bottom side, a layer of an asphaltic material being disposed on the bottom side of the mat to provide a coated mat and a liquid parting agent applied to the top side of the mat.
    Type: Application
    Filed: September 10, 2008
    Publication date: January 8, 2009
    Inventors: Steve A. Ratcliff, Shaik Mohseen