ALEXANDRIA, Va., Sept. 23 -- United States Patent no. 12,422,175, issued on Sept. 23, was assigned to DAIKIN INDUSTRIES LTD. (Osaka, Japan).

"Refrigerant cycle system" was invented by Eiji Kumakura (Osaka, Japan), Takuro Yamada (Osaka, Japan), Atsushi Yoshimi (Osaka, Japan), Ikuhiro Iwata (Osaka, Japan) and Tomoatsu Minamida (Osaka, Japan).

According to the abstract* released by the U.S. Patent & Trademark Office: "Refrigerant is caused to be in a superheating state without impairing the performance of a cascade heat exchanger. A refrigerant cycle system includes a first refrigerant circuit, a second refrigerant circuit, and a first cascade heat exchanger. The first cascade heat exchanger exchanges heat between a first refrigerant that fl...