ALEXANDRIA, Va., Oct. 28 -- United States Patent no. 12,449,339, issued on Oct. 21, was assigned to CHINA UNIVERSITY OF PETROLEUM(EAST CHINA) (Qingdao, China) and NO.1 EXPLORATION BRIGADE OF SHANDONG COAL GEOLOGY BUREAU (Qingdao, China).

"Device and method for testing gas loss amount which simulates wireline coring process" was invented by Xianmin Zhang (Qingdao, China), Qihong Feng (Qingdao, China), Zhuangzhuang Zheng (Qingdao, China), Baiyanyue Chen (Qingdao, China), Changlong Zhang (Qingdao, China) and Bin Zhang (Qingdao, China).

According to the abstract* released by the U.S. Patent & Trademark Office: "The present invention discloses a device and method for testing the gas loss amount which simulates a wireline coring process, and be...