ALEXANDRIA, Va., Sept. 10 -- United States Patent no. 12,412,961, issued on Sept. 9, was assigned to SANYO Electric Co. Ltd. (Osaka, Japan).
"Square secondary battery" was invented by Yuma Kamiyama (Osaka, Japan) and Ryoichi Wakimoto (Hyogo, Japan).
According to the abstract* released by the U.S. Patent & Trademark Office: "A secondary battery includes a battery case housing a flat electrode body and a sealing plate. The electrode body is housed in the battery case such that a winding axis thereof is parallel with a longitudinal direction of the sealing plate. At an end portion of the electrode body in a winding axis direction thereof, an edge of a positive or negative electrode plate is connected to an external terminal fixed to the seal...