ALEXANDRIA, Va., Aug. 18 -- United States Patent no. 12,712,199, issued on Aug. 18, was assigned to CONTEMPORARY AMPEREX TECHNOLOGY (HONG KONG) Ltd. (Hong Kong).

"Secondary battery and electrical device" was invented by Guoling Fan (Ningde, China), Xinxin Du (Ningde, China) and Daichun Tang (Ningde, China).

According to the abstract* released by the U.S. Patent & Trademark Office: "A secondary battery includes a positive electrode plate and a negative electrode plate; the positive electrode plate includes a positive electrode current collector and a positive electrode film layer arranged on at least one of the surfaces of the positive electrode current collector, the positive electrode film layer includes a positive electrode active mater...