ALEXANDRIA, Va., Dec. 16 -- United States Patent no. 12,497,265, issued on Dec. 16, was assigned to HITACHI LTD. (Tokyo).
"Device and method for estimating elevator waiting time" was invented by Masayasu Fujiwara (Tokyo), Wataru Toriumi (Tokyo), Takahiro Hatori (Tokyo) and Taichi Saito (Tokyo).
According to the abstract* released by the U.S. Patent & Trademark Office: "A queueing start measurement unit which measures arrival of an elevator user at a preset location; a boarding measurement unit which measures boarding of the elevator user in an elevator car; a storage unit which stores an arrival time measured by the queueing start measurement unit and a boarding time measured by the boarding measurement unit; and a waiting time calculatio...