ALEXANDRIA, Va., Nov. 25 -- United States Patent no. 12,480,676, issued on Nov. 25, was assigned to GUANGDONG CARRIER HVAC Co. LTD. (Foshan, China).
"Air conditioner defrosting method" was invented by Yantu Yang (Guangdong, China) and Lijuan Zhou (Guangdong, China).
According to the abstract* released by the U.S. Patent & Trademark Office: "An air conditioner defrosting method. In the air conditioner's heating process, after the end of every defrosting procedure, the temperature of the outdoor heat exchanger coil and the time used over the course of the defrosting procedure can be measured and recorded. The defrosting situation of the air conditioner is reflected, and an initial determination of whether there is frost accumulation is made...