ALEXANDRIA, Va., July 30 -- United States Patent no. 12,371,624, issued on July 29, was assigned to Saudi Arabian Oil Co. (Dhahran, Saudi Arabia).

"Systems and processes for producing ethylene from naphtha and butanes" was invented by Vishvedeep Bhat (Dhahran, Saudi Arabia), Vinod Ramaseshan (Dhahran, Saudi Arabia) and Omer Refa Koseoglu (Dhahran, Saudi Arabia).

According to the abstract* released by the U.S. Patent & Trademark Office: "A process for upgrading a hydrocarbon feed includes contacting the hydrocarbon feed with hydrogen in the presence of a ring opening catalyst in a naphthene conversion unit, the contacting causing naphthenes in the hydrocarbon feed to react to produce a converted effluent comprising isoparaffins and normal ...