US Patent Issued to King Fahd University of Petroleum and Minerals on Sept. 23 for "Chitosan acetate salt polymer for enhanced oil recovery applications" (Saudi Arabia Inventors)

ALEXANDRIA, Va., Sept. 23 -- United States Patent no. 12,421,445, issued on Sept. 23, was assigned to King Fahd University of Petroleum and Minerals (Dhahran, Saudi Arabia).

"Chitosan acetate salt polymer for enhanced oil recovery applications" was invented by Mahmoud Atef Abdulhamid (Dhahran, Saudi Arabia) and Sivabalan Sakthivel (Dhahran, Saudi Arabia).

According to the abstract* released by the U.S. Patent & Trademark Office: "A method of recovering oil from a subterranean geological formation includes injecting a solution including salt water and a chitosan acetate salt polymer into the subterranean geological formation and concurrently recovering oil from a production well in the subterranean geological formation, where the chitosan ...