Patents by Inventor Eric A. Ogren

Eric A. Ogren 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