ALEXANDRIA, Va., June 19 -- United States Patent no. 12,331,969, issued on June 17, was assigned to LG Electronics Inc. (Seoul, South Korea).

"Air conditioner" was invented by Woojoo Choi (Seoul, South Korea), Yejin Kim (Seoul, South Korea), Eunjun Cho (Seoul, South Korea) and Jihyeong Ryu (Seoul, South Korea).

According to the abstract* released by the U.S. Patent & Trademark Office: "An air conditioner and a method for controlling an air conditioner. The method may include detecting an outlet temperature of a compressor; detecting a change in temperature of a hot water supply pipe; determining a system error based on the outlet temperature of the compressor; and determining an abnormality in an adjustment valve based on the temperature ...