ALEXANDRIA, Va., Dec. 23 -- United States Patent no. 12,503,663, issued on Dec. 23, was assigned to Ecolab USA Inc. (St. Paul, Minn.).
"Cold flow additives for plastic-derived synthetic feedstock" was invented by Theodore C. Arnst (Sugar Land, Texas), Karina Eureste (Houston) and Tannon Shane Woodson (Houston).
According to the abstract* released by the U.S. Patent & Trademark Office: "Disclosed are pour point depressants used in compositions and methods for achieving the cold flow properties of synthetic feedstock derived from plastic. A method of obtaining the synthetic feedstock is also disclosed, which includes heating plastic under substantially oxygen free conditions at a temperature of from about 400deg C. to about 850deg C. to pro...