Patents by Inventor Grant D. Mitchell

Grant D. Mitchell 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: 20250347498
    Abstract: A breakable shooting target, formed from a composition including a binder component, selected from one or more natural fatty acids, and a binder modifier component, selected from one or more metal oxides, the binder and binder modifier together comprising between about 14% and about 24% of the composition; a viscosity modifier component, selected from one or more plant-based resins comprising between about 0.1% and about 15% of the composition; and a filler component comprising between about 70% and 86% of the composition. The composition is molded into a disk shape and cast in a state of sufficient strength and brittleness, that the target can be launched from a target launching trap, fly through the air in a reproduceable path, and when hit with multiple shot shell pellets fired from a shotgun, the target will shatter into multiple pieces.
    Type: Application
    Filed: May 21, 2025
    Publication date: November 13, 2025
    Inventors: Grant D. MITCHELL, Christopher Ted MCMILLAN, John Thomas FOX
  • Patent number: 5182319
    Abstract: A pressure sensitive bituminous composition having improved tack and adhesiveness, comprising: (1) from about 50% to about 87% of a bituminous component; from about 1 to about 15% of a thermoplastic block copolymer, M.sub.1, of the A-B-A type, preferably styrene-butadiene-styrene; (3) from about 1% to about 10% of a block copolymer, M.sub.2, of the A-B type, preferably styrene-butadiene; and (4) from about 5% to about 50% of a fumed silica. The fumed silica is an active ingredient which absorbs excess oil and improves the tack and adhesiveness of the final composition.
    Type: Grant
    Filed: September 27, 1991
    Date of Patent: January 26, 1993
    Assignee: Tamko Asphalt Products, Inc.
    Inventor: Grant D. Mitchell