ALEXANDRIA, Va., Dec. 31 -- United States Patent no. 12,508,667, issued on Dec. 30, was assigned to K.S.M. Co. Ltd. (Gimhae-si, South Korea).
"Electric vehicle battery case manufacturing method" was invented by Jong Suk Kim (Busan, South Korea) and Byung Chan Kim (Busan, South Korea).
According to the abstract* released by the U.S. Patent & Trademark Office: "An electric vehicle battery case manufacturing method including a first cycle performing operation of sequentially performing a unit assembly preparing step (S1), a first welding step (S2), a first machining step (S3), and a first inspection step (S4), wherein the step (S1) performs a process of preparing unit parts through aluminum extrusion and machining and then welding each sub-a...