ALEXANDRIA, Va., Dec. 16 -- United States Patent no. 12,497,514, issued on Dec. 16, was assigned to ASPHALT SYSTEMS INC. (Salt Lake City).
"Coating system for asphalt and related methods" was invented by Joseph LaRusso (Oro Valley, Ariz.) and Bradley Richard Grose (Glade Park, Colo.).
According to the abstract* released by the U.S. Patent & Trademark Office: "A coating system and related methods for an airfield surface or a roadway is described. The coating system may include a stable cationic emulsion for application to the airfield surface or the roadway. The stable cationic emulsion may include a) an asphalt blend comprising gilsonite, wherein the gilsonite is modified to possess a positive charge, b) one or more polymers, and c) one o...