ALEXANDRIA, Va., March 19 -- United States Patent no. 12,253,315, issued on March 18, was assigned to DAIKIN INDUSTRIES LTD. (Osaka, Japan).
"Air conditioner" was invented by Hiroyuki Nakano (Osaka, Japan) and Shota Ago (Osaka, Japan).
According to the abstract* released by the U.S. Patent & Trademark Office: "An air conditioner 1 is disclosed as an air conditioner configured to condition air by connecting an indoor unit 2 including a first heat exchanger 11 in which a refrigerant exchanging heat with room air flows to an outdoor unit 3 including a second heat exchanger 24 in which a refrigerant exchanging heat with outdoor air flows. The first heat exchanger 11 includes a first heat transfer tube 11a1 made of aluminum or aluminum alloy, ...