ALEXANDRIA, Va., Sept. 15 -- United States Patent no. 12,738,875, issued on Sept. 15, was assigned to QINGDAO HISENSE HITACHI AIR-CONDITIONING SYSTEMS Co. LTD. (Qingdao, China).

"Air conditioner and method for determining energy consumption of air conditioner" was invented by Jingfeng Shi (Qingdao, China), Lei Shi (Qingdao, China), Qiang Chen (Qingdao, China), Haibin Lu (Qingdao, China) and Fali Cao (Qingdao, China).

According to the abstract* released by the U.S. Patent & Trademark Office: "An air conditioner includes a controlled device, a frequency converter, and a controller. The controller is configured to: determine a present operating frequency of the controlled device, and a present output current and a present input power of the ...