ALEXANDRIA, Va., Nov. 18 -- United States Patent no. 12,472,640, issued on Nov. 18, was assigned to GUANGDONG POLYTECHNIC NORMAL UNIVERSITY (Guangzhou, China).

"Control method and system for article transportation based on mobile robot" was invented by Zhenxing Zheng (Guangdong, China), Jian Ouyang (Guangdong, China) and Guifang Ye (Guangdong, China).

According to the abstract* released by the U.S. Patent & Trademark Office: "A control method and a control system based on a mobile robot are provided, which correspondingly obtain first feature information and second feature information according to a specific target object and a face region of the user present in region environment, and a delivery request message is sent to the mobile robo...