ALEXANDRIA, Va., July 23 -- United States Patent no. 12,364,976, issued on July 22, was assigned to Saudi Arabian Oil Co. (Dhahran, Saudi Arabia).

"Catalyst systems suitable for the tetramerization of ethylene and methods of using the same" was invented by Sibo Lin (Arlington, Mass.), Dana Amber Wong (Chestnut Hill, Mass.), Yagnaseni Ghosh (Lexington, Mass.), Motaz Khawaji (Thuwal, Saudi Arabia), Wei Xu (Thuwal, Saudi Arabia) and Mohamed Elanany (Thuwal, Saudi Arabia).

According to the abstract* released by the U.S. Patent & Trademark Office: "Catalyst systems suitable for tetramerizing ethylene to form 1-octene may include a catalyst including a chromium compound coordinated with a ligand a co-catalyst including an organoaluminum compoun...