US Patent Issued to KING FAHD UNIVERSITY OF PETROLEUM AND MINERALS on Sept. 2 for "Method to reduce adsorption of cationic surfactants on carbonate rocks using methylene blue" (Saudi Arabia Inventors)

ALEXANDRIA, Va., Sept. 3 -- United States Patent no. 12,404,444, issued on Sept. 2, was assigned to KING FAHD UNIVERSITY OF PETROLEUM AND MINERALS (Dhahran, Saudi Arabia).

"Method to reduce adsorption of cationic surfactants on carbonate rocks using methylene blue" was invented by Shams Kalam (Dhahran, Saudi Arabia), Sidqi Ahmad Mohammad Abu-Khamsin (Dhahran, Saudi Arabia), Shirish Liladhar Patil (Dhahran, Saudi Arabia) and Muhammad Shahzad Kamal (Dhahran, Saudi Arabia).

According to the abstract* released by the U.S. Patent & Trademark Office: "A method of enhanced oil recovery in a carbonate rock formation including injecting a mixture into the carbonate rock formation containing an oil composition and extracting the oil composition fro...