ALEXANDRIA, Va., May 12 -- United States Patent no. 12,623,964, issued on May 12, was assigned to Asphalt Sciences LLC (Reno, Nev.).
"System and method for modifying and enhancing tire rubber bitumen" was invented by Joseph Randall Bruns (Reno, Nev.) and Hashem Hashemi (Reno, Nev.).
According to the abstract* released by the U.S. Patent & Trademark Office: "A method and system for generating a modified and enhanced dissolved tire rubber bitumen compound are described. The method includes receiving an rapid digestion process ("RDP") compound, a bitumen compound, and a sulfur cross-linking agent. First heating the RDP compound, the bitumen compound, and the sulfur cross-linking agent to 320deg F. to 420deg F. with mixing for 3 to 5 hours. T...