ALEXANDRIA, Va., Oct. 21 -- United States Patent no. 12,442,950, issued on Oct. 14, was assigned to CHINA UNIVERSITY OF PETROLEUM (EAST CHINA) (Qingdao, China).

"Evaluation method for relative contributions of heat sources based on helium and application thereof" was invented by Ziqi Feng (Qingdao, China), Yangming Li (Qingdao, China), Chenzhao Quan (Qingdao, China) and Wei Wang (Qingdao, China).

According to the abstract* released by the U.S. Patent & Trademark Office: "An evaluation method for relative contributions of heat sources based on helium and application thereof, belonging to the technical field of helium origin identification, migration mechanism, and accumulation process analysis. Relative heat contribution values of the mant...