ALEXANDRIA, Va., Sept. 8 -- United States Patent no. 12,728,749, issued on Sept. 8, was assigned to DENSO Corp. (Kariya-city, Japan).

"Autonomous traveling device, autonomous traveling management system, autonomous traveling management method" was invented by Yuki Kato (Kariya-city, Japan) and Hiroyuki Ohsawa (Kariya-city, Japan).

According to the abstract* released by the U.S. Patent & Trademark Office: "An autonomous traveling device autonomously travels in a charged state after being charged at a charging station of an autonomous traveling management system, and includes: a traveling unit that receives power; a battery unit capable of supplying the power to the traveling unit in the charged state and in a coupled state where the batter...