ALEXANDRIA, Va., Oct. 28 -- United States Patent no. 12,448,289, issued on Oct. 21, was assigned to China University of Mining and Technology (Xuzhou, China).

"Method of nitrogen-phosphorus doped porous carbon for oxygen reduction electrocatalysis within a wide PH range" was invented by Lang Xu (Xuzhou, China), Jiawei Qi (Xuzhou, China), Haishen Jiang (Xuzhou, China), Peiyao Bai (Xuzhou, China), Weiqi Liu (Xuzhou, China), Bailin Jin (Xuzhou, China) and Wendu Zhang (Xuzhou, China).

According to the abstract* released by the U.S. Patent & Trademark Office: "A preparation method of nitrogen-phosphorus doped porous carbon for oxygen reduction electrocatalysis within a wide pH range, which uses natural mineral-based carbon sources as raw mater...