ALEXANDRIA, Va., Feb. 24 -- United States Patent no. 12,559,909, issued on Feb. 24, was assigned to Hitachi Construction Machinery Co. Ltd. (Tokyo).
"Construction assistance system" was invented by Hiroyuki Yamada (Tokyo), Akira Kanazawa (Tokyo) and Shinya Imura (Tsuchiura, Japan).
According to the abstract* released by the U.S. Patent & Trademark Office: "The object of the present invention is to provide a constriction assistance system that can optimize the safety and the productivity in a work at a construction site. Accordingly, the construction assistance system that has a safety construction assistance function that contributes to risk reduction in regard to a worker and a work machine at a construction site includes a server that c...