ALEXANDRIA, Va., Sept. 15 -- United States Patent no. 12,738,756, issued on Sept. 15, was assigned to Hitachi Construction Machinery Co. Ltd. (Tokyo).
"Electric powered working machine" was invented by Takashi Kamijoh (Tokyo), Ken Takeuchi (Ibaraki, Japan), Itaru Naya (Ibaraki, Japan), Kenta Tanigaki (Ibaraki, Japan) and Takeshi Inoue (Tokyo).
According to the abstract* released by the U.S. Patent & Trademark Office: "A battery excavator 1 as an electric powered working machine includes a secondary battery 201, a battery management unit 202 that manages the secondary battery 201, and a controller 300 that controls a normal charge or a diagnostic charge for the secondary battery 201. The controller 300 includes: a diagnostic charge recomme...