Patents by Inventor Frederick Spigener

Frederick Spigener 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).

  • Publication number: 20070275621
    Abstract: Embodiments of the present invention generally relate to a non-slip roofing underlayment made using an extrusion lamination process with a desirable minimum substrate-to-substrate static coefficient of friction of at least 0.400, made using an extrusion lamination process. In one embodiment, a roofing underlayment is manufactured from the steps comprising providing a first layer of a woven thermoplastic material, extruding a second layer of thermoplastic material on the first layer, at a temperature between about 470 degrees and about 600 degrees Fahrenheit, and laminating a third layer of non-woven thermoplastic material on the second layer through a nip at a pressure between about 50 pounds per square inch and about 90 pounds per square inch.
    Type: Application
    Filed: May 23, 2007
    Publication date: November 29, 2007
    Inventors: Dale Bennett, Shawn Sharpe, Frederick Spigener