ALEXANDRIA, Va., July 21 -- United States Patent no. 12,686,731, issued on July 21, was assigned to Dow Global Technologies LLC (Midland, Mich.).

"Catalyst systems and processes for producing polyethylene using the same" was invented by Rhett A. Baillie (Lake Jackson, Texas), Hien Q. Do (Lake Jackson, Texas), Andrew M. Camelio (Midland, Mich.), Johnathan E. Delorbe (Lake Jackson, Texas), Mari S. Rosen (Lake Jackson, Texas), Philip P. Fontaine (Lake Jackson, Texas) and David M. Pearson (Lake Jackson, Texas).

According to the abstract* released by the U.S. Patent & Trademark Office: "Embodiments of the present application are directed to procatalysts, and catalyst systems including procatalysts including a metal-ligand complex having the st...