ALEXANDRIA, Va., April 9 -- United States Patent no. 12,270,757, issued on April 8, was assigned to CHINA UNIVERSITY OF PETROLEUM (EAST CHINA) (Qingdao, China).

"Method for determining dynamic adsorption retention of polymer capsules" was invented by Bei Wei (Qingdao, China), Yongsheng Liu (Qingdao, China), Jian Hou (Qingdao, China), Jiahe Sun (Qingdao, China), Kang Zhou (Qingdao, China), Yu Xue (Qingdao, China), Ningyu Zheng (Qingdao, China), Qingjun Du (Qingdao, China), Xuwen Qin (Qingdao, China) and Yongge Liu (Qingdao, China).

According to the abstract* released by the U.S. Patent & Trademark Office: "Disclosed is a method for determining the dynamic adsorption retention of polymer capsules, belonging to the technical field of oil and...