ALEXANDRIA, Va., July 14 -- United States Patent no. 12,678,708, issued on July 14, was assigned to SAUDI ARABIAN OIL COMPANY (Dhahran, Saudi Arabia).

"Distillation column minimum flow arrangement" was invented by Soelistiono Koesoemo Prasetiyo (Abqaiq, Saudi Arabia), Ibrahim Saeed Alghamdi (Abqaiq, Saudi Arabia) and Moath Khalid Almansour (Abqaiq, Saudi Arabia).

According to the abstract* released by the U.S. Patent & Trademark Office: "A distillation system operating below minimum flow. The distillation column is configured for separating a mixed feed into one or more fractional mixtures, producing an overhead product and a bottom product. A bottom return line is provided for returning at least a portion of the bottom product to supplem...