ALEXANDRIA, Va., May 12 -- United States Patent no. 12,624,250, issued on May 12, was assigned to Asphalt Sciences LLC (Reno, Nev.).
"Shingle roofing coating method and composition" was invented by Joseph Randall Bruns (Scurry, Texas), Hashem Hashemi (Reno, Nev.) and Moises Cisneros Rached (Reno, Nev.).
According to the abstract* released by the U.S. Patent & Trademark Office: "A method for generating a shingle roofing coating is described. The method includes mixing 1% by weight to 20% by weight of an elastomeric polymer with an asphalt flux to generate a concentrate. The concentrate is then heated and mixed with an oxidized asphalt feedstock. The mixture of the concentrate and oxidized asphalt is then heated to generate the shingle roof...