ALEXANDRIA, Va., May 19 -- United States Patent no. 12,630,771, issued on May 19, was assigned to Saudi Arabian Oil Co. (Dhahran, Saudi Arabia).

"One-step fixed-bed catalytic process for upgrading pyrolysis oil to lighter aromatic compounds" was invented by Miao Sun (Dhahran, Saudi Arabia), Noor Al-Mana (Al Khobar, Saudi Arabia), Lianhui Ding (Dhahran, Saudi Arabia), Eman Zaki Albaher (Qatif, Saudi Arabia), Guanghui Zhu (Dhahran, Saudi Arabia) and Ke Zhang (Winchester, Mass.).

According to the abstract* released by the U.S. Patent & Trademark Office: "Systems and method for upgrading pyrolysis oil to produce greater value aromatic compounds includes combining heavy pyrolysis oil and a diluent to produce the pyrolysis oil feed with least 3...