US Patent Issued to Wuhan Huiqiang New Energy Material Technology on Nov. 4 for "Method for preparing diaphragm of lithium-ion battery including three layer co-extrusion followed by treatment in annealing box" (Chinese Inventors)

ALEXANDRIA, Va., Nov. 6 -- United States Patent no. 12,463,289, issued on Nov. 4, was assigned to Wuhan Huiqiang New Energy Material Technology Co. Ltd. (Wuhan, China).

"Method for preparing diaphragm of lithium-ion battery including three layer co-extrusion followed by treatment in annealing box" was invented by Wang Hongbing (Wuhan, China), Tang Haolin (Wuhan, China) and Bian Hongbing (Wuhan, China).

According to the abstract* released by the U.S. Patent & Trademark Office: "Disclosed is a method for preparing a three-layer-co-extruded diaphragm of a lithium-ion battery, falling into lithium-ion battery diaphragm technical field. The annealing box used comprises: box body, motor and sealing over, with uniformly-arranged heating plates f...