ALEXANDRIA, Va., Sept. 24 -- United States Patent no. 12,742,119, issued on Sept. 22, was assigned to PetroChina Co. Ltd. (Beijing).

"Aqueous formulation of oil-soluble corrosion inhibitor, and preparation method and regeneration method thereof" was invented by Jingjing Jiang (Beijing City, China), Yishan He (Beijing City, China), Lihua Huang (Beijing City, China), Jun Cao (Beijing City, China), Jing Yan (Beijing City, China), Wen Chen (Beijing City, China) and Yongfan Tang (Beijing City, China).

According to the abstract* released by the U.S. Patent & Trademark Office: "The present disclosure relates to an aqueous formulation of an oil-soluble corrosion inhibitor, and a preparation method and a regeneration method thereof. The preparatio...