ALEXANDRIA, Va., July 15 -- United States Patent no. 12,663,223, issued on June 23, was assigned to DAIKIN INDUSTRIES LTD. (Osaka, Japan).

"Heat exchanger" was invented by Ken Satou (Osaka, Japan), Tooru Andou (Osaka, Japan), Tomoki Hirokawa (Osaka, Japan), Aya Okuno (Osaka, Japan) and Kengo Uchida (Osaka, Japan).

According to the abstract* released by the U.S. Patent & Trademark Office: "A heat exchanger that exchanges heat between a refrigerant and air, includes: flat tubes disposed in a first direction intersecting with a longitudinal direction of cross sections of the flat tubes and through which the refrigerant flows; first heat transfer fins that contact the flat tubes and are disposed on a windward side of the flat tubes; and secon...