ALEXANDRIA, Va., July 15 -- United States Patent no. 12,663,450, issued on June 23, was assigned to ZHEJIANG UNIVERSITY (Hangzhou, China).

"Non-intrusive load monitoring method based on V-I trajectory and neural network" was invented by Lingxia Lu (Hangzhou, China), Jusong Kang (Hangzhou, China), Miao Yu (Hangzhou, China), Bingnan Wang (Hangzhou, China) and Zhejing Bao (Hangzhou, China).

According to the abstract* released by the U.S. Patent & Trademark Office: "A non-intrusive load monitoring method based on V-I trajectory and neural network includes: collecting the household voltage, current and active power data in real time; determining whether there is a switching event and whether the load operating state has reached a steady state ...