ALEXANDRIA, Va., June 25 -- United States Patent no. 12,339,019, issued on June 24, was assigned to Mitsubishi Electric Corp. (Tokyo).
"Air-conditioning device" was invented by Kazuya Watanabe (Tokyo), Mizuo Sakai (Tokyo) and Ryosuke Okazawa (Tokyo).
According to the abstract* released by the U.S. Patent & Trademark Office: "An air-conditioning device includes a main circuit in which a refrigerant circulates; a flow channel-switching unit that selects a certain parallel heat exchanger as a defrosting target; a bypass pipe; a temperature-detecting unit; and one or more processors. The processor(s) operates the flow channel-switching unit such that an operation mode is switched between a normal heating operation mode in which the parallel h...