ALEXANDRIA, Va., July 9 -- United States Patent no. 12,352,484, issued on July 8, was assigned to DAIKIN INDUSTRIES LTD. (Osaka, Japan).

"Heat source unit and refrigeration device" was invented by Shuichi Taguchi (Osaka, Japan) and Masaaki Takegami (Osaka, Japan).

According to the abstract* released by the U.S. Patent & Trademark Office: "A heat source unit constitutes a refrigeration apparatus by being connected to a utilization-side unit. The heat source unit includes a low-stage compression element, a high-stage compression element, and a heat exchanger. The low-stage compression element has a discharge pipe provided with a pressure switchgear. The high-stage compression element compresses a refrigerant discharged from the low-stage co...