ALEXANDRIA, Va., July 7 -- United States Patent no. 12,676,315, issued on July 7, was assigned to SANYO Electric Co. Ltd. (Osaka, Japan).
"Secondary battery" was invented by Yoshitaka Matsumasa (Hyogo, Japan).
According to the abstract* released by the U.S. Patent & Trademark Office: "A first electrode current collector is joined to a multilayer of a positive electrode core in a part including no positive electrode active material layer of the first electrode core, by ultrasonic welding in a joint area. The joint area, at which the multilayers of the first electrode core where the first electrode cores are stacked is joined to the first electrode current collector by ultrasonic welding, includes a plurality of core recesses. A core projec...