ALEXANDRIA, Va., June 18 -- United States Patent no. 12,326,280, issued on June 10, was assigned to Panasonic Intellectual Property Management Co. Ltd. (Osaka, Japan).
"Refrigeration apparatus" was invented by Toyoaki Kiya (Saitama, Japan), Osamu Kosuda (Saitama, Japan) and Hiroshi Yatogo (Gunma, Japan).
According to the abstract* released by the U.S. Patent & Trademark Office: "Provided is a refrigeration apparatus capable of appropriately supplying oil separated by oil separators to compressors according to the situation. The refrigeration apparatus includes refrigeration units each including a compressor, an oil separator, an oil return pipe, and a heat dissipation heat exchanger; a pressure reducing valve connected to the heat dissipa...