ALEXANDRIA, Va., Sept. 8 -- United States Patent no. 12,729,909, issued on Sept. 8, was assigned to CONTEMPORARY AMPEREX TECHNOLOGY (HONG KONG) Ltd. (Hong Kong).

"Electrode sheet oven drying apparatus, battery production device, and electrode sheet oven drying method" was invented by Shengdong Chen (Ningde, China), Lei Song (Ningde, China), Qiang Liu (Ningde, China) and Chen Li (Ningde, China).

According to the abstract* released by the U.S. Patent & Trademark Office: "An electrode sheet oven drying apparatus includes an oven provided with an oven drying chamber, an oven drying assembly positioned in the oven drying chamber, an air discharge pipe connected to the oven drying chamber, a first air volume regulating valve installed at one en...