ALEXANDRIA, Va., Nov. 3 -- United States Patent no. 12,785,138, issued on Nov. 3, was assigned to CONTEMPORARY AMPEREX TECHNOLOGY (HONG KONG) Ltd. (Hong Kong).

"Flat-plate sodium metal battery and electrochemical device" was invented by Yuqun Zeng (Ningde, China).

According to the abstract* released by the U.S. Patent & Trademark Office: "A flat-plate type sodium metal battery and an electrochemical device are described. The battery comprises a positive electrode plate and a negative electrode plate, the positive electrode plate provided with a first micro-through-hole arranged in an array on at least part of the surface thereof, the negative electrode plate provided with a second micro-through-hole arranged in an array on at least part o...