ALEXANDRIA, Va., Sept. 8 -- United States Patent no. 12,730,446, issued on Sept. 8, was assigned to SEMES Co. LTD. (Cheonan-si, South Korea).

"Transfer robot system and the transfer robot system driving method" was invented by Seung Jun Lee (Hwaseong-si, South Korea), Seung Seok Ha (Seoul, South Korea), In Sung Choi (Hwaseong-si, South Korea) and Gil Do Kim (Anseong-si, South Korea).

According to the abstract* released by the U.S. Patent & Trademark Office: "The inventive concept provides a transfer robot system. Embodiments of the inventive concept provide a transfer robot system and a transfer robot system driving method in which a bottleneck phenomenon of mobile robots may be prevented, as a new obstacle which does not exist within a m...