Patents by Inventor Gary S. Thompson

Gary S. Thompson 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).

  • Flame retardant modified asphalt-based material and products therefrom
    Patent number: 5516817
    Abstract: A flame retardant asphalt material useful for the processing and formation of a roofing membrane includes from about 40 to about 50 parts by weight of asphalt; from about 10 to about 20 parts by weight of a copolymer; from 0 to about 5 parts by weight of polypropylene homopolymer having at least about 45 percent by weight of crystallinity; from about 10 to about 40 parts by weight of a functional filler having a decomposition temperature above the processing temperature of the material; from about 0 to about 15 parts by weight of a non-functional filler; and, from about 0.5 to about 10 parts by weight of an intumescent material.
    Type: Grant
    Filed: April 27, 1995
    Date of Patent: May 14, 1996
    Assignee: Bridgestone/Firestone, Inc.
    Inventors: Carter C. Slusher, Eric A. Ogren, William B. Gorman, Gary S. Thompson, Edward G. Kane, Arthur M. Usmani
  • SBS-modified, asphalt-based material with resistance to crosslinking
    Patent number: 5451621
    Abstract: An asphalt material, useful for forming a membrane, comprises a mixture of from about 47 to about 74 parts by weight of asphalt, from about 7 to about 15 parts by weight of styrene-butadiene-styrene block copolymer, from about 15 to about 25 parts by weight of a filler component, and from about 1 to about 5 parts by weight of polypropylene homopolymer. A method for preparing a modified-asphalt material comprises the steps of forming a mixture by admixing from about 47 to about 74 parts by weight of asphalt; from about 7 to about 15 parts by weight of a styrene-butadiene-styrene block copolymer; from about 15 to about 25 parts by weight of a filler; and from about 1 to about 5 parts by weight of a polypropylene homopolymer; wherein the polypropylene homopolymer inhibits high temperature crosslinking of the styrene-butadiene-styrene block copolymer.
    Type: Grant
    Filed: August 15, 1994
    Date of Patent: September 19, 1995
    Assignee: Bridgestone/Firestone, Inc.
    Inventors: Arthur M. Usmani, William B. Gorman, Gary S. Thompson, Edward G. Kane