ALEXANDRIA, Va., Feb. 19 -- United States Patent no. 12,228,490, issued on Feb. 18, was assigned to HUBEI UNIVERSITY OF TECHNOLOGY (Wuhan, China) and GUANGXI POWER GRID Co. LTD. (Nanning, China).

"Screening method for screening an adsorbent for use in environment-friendly gas-insulated equipment" was invented by Xiaoxing Zhang (Wuhan, China), Shuangshuang Tian (Wuhan, China), Yuandong Jiang (Nanning, China), Dajian Li (Nanning, China), Wei Zhang (Nanning, China), Xiajin Rao (Nanning, China) and Fangyuan Han (Nanning, China).

According to the abstract* released by the U.S. Patent & Trademark Office: "Disclosed is a screening method for selecting an adsorbent for use in environment-friendly gas-insulated equipment which contains an environm...