ALEXANDRIA, Va., June 6 -- United States Patent no. 12,281,857, issued on April 22, was assigned to DENSO Corp. (Kariya, Japan).

"Heat exchanger" was invented by Syogo Kawaguchi (Kariya, Japan), Isao Tamada (Kariya, Japan) and Yasuhiro Mizuno (Kariya, Japan).

According to the abstract* released by the U.S. Patent & Trademark Office: "A condensing portion is formed such that a first refrigerant flow path through which a gas-phase refrigerant flowing into a refrigerant inlet flows and a first heat-medium flow path through which a heat medium flows overlap each other in a stacking direction of plates. A gas-liquid separator separates the refrigerant into gas-phase refrigerant and liquid-phase refrigerant and discharges the liquid-phase refri...