US Patent Issued to Arizona Board of Regents on behalf of Arizona State University on Sept. 16 for "Sulfur-modified bitumen compositions" (Arizona Inventors)

ALEXANDRIA, Va., Sept. 17 -- United States Patent no. 12,415,925, issued on Sept. 16, was assigned to Arizona Board of Regents on behalf of Arizona State University (Scottsdale, Ariz.).

"Sulfur-modified bitumen compositions" was invented by Elham Fini (Phoenix) and Albert Hung (Tempe, Ariz.).

According to the abstract* released by the U.S. Patent & Trademark Office: "Preparing a modified bitumen composition includes combining bitumen with elemental sulfur to yield a mixture, and crystallizing the elemental sulfur on a surface of the bitumen to yield a layer of elemental sulfur on the surface of the bitumen. The mixture typically includes about 5 wt % to about 15 wt % of the elemental sulfur. A modified bitumen composition includes A modif...