ALEXANDRIA, Va., Sept. 1 -- United States Patent no. 12,725,841, issued on Sept. 1, was assigned to LG Energy Solution Ltd. (Seoul, South Korea).
"Stack cell for easy confirmation of separator folding, separator inspection device and inspection method" was invented by Joon Sup Kang (Daejeon, South Korea), Nak Gi Sung (Daejeon, South Korea) and Sung Tae Kim (Daejeon, South Korea).
According to the abstract* released by the U.S. Patent & Trademark Office: "A stack cell for easy confirmation of separator folding, includes a plurality of electrodes, a separator disposed between two adjacent electrodes, and a mark formed of a radio-opaque material through which no radiation ray is transmitted, and provided at an edge region of the separator, w...