ALEXANDRIA, Va., Sept. 15 -- United States Patent no. 12,738,367, issued on Sept. 15, was assigned to Qingdao University of Science and Technology (Qingdao, China) and Jiangsu Zeran Information Technology Co. Ltd (Changzhou, China).

"Blockchain-based and human characteristics intelligence recognition for appointment visualization elderly care system" was invented by Benju Xie (Qingdao, China), Bowen Jiang (Qingdao, China) and Xu Huang (Qingdao, China).

According to the abstract* released by the U.S. Patent & Trademark Office: "A blockchain-based and human characteristics intelligence recognition for appointment-based elderly care system includes a cloud server, a smartwatch and a management terminal, the cloud server is connected to the s...