ALEXANDRIA, Va., Dec. 2 -- United States Patent no. 12,489,618, issued on Dec. 2, was assigned to Beijing BOE Technology Development Co. Ltd. (Beijing).

"Security management system and security management method" was invented by Yang Zhang (Beijing), Han Li (Beijing), Jiuxia Yang (Beijing), Mingyuan Ma (Beijing), Jiashuang Zong (Beijing) and Yuhai Sun (Beijing).

According to the abstract* released by the U.S. Patent & Trademark Office: "A security management system includes a first server. The first server is configured to: obtain access information of a terminal device; generate, if the access information of the terminal device meets an access condition, a first key based on a registration time of the terminal device, identification info...