Patents by Inventor Walter Robar

Walter Robar 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).

  • Lateral liner substrates
    Publication number: 20050281970
    Abstract: A liner material suitable for a pipe comprising a substrate having inner and outer surfaces including a coating of impermeable resin on the outer surface of the substrate, characterized in that the substrate with the coating resists substantial delamination at temperatures of greater than 150° F., has a kinetic coefficient of friction of ?0.8, and a flex modulus of less than 200,000 psi.
    Type: Application
    Filed: November 9, 2004
    Publication date: December 22, 2005
    Inventors: Louis LaMarca, Larry Sanders, Mark Helder, Albert Roper, Walter Robar