ALEXANDRIA, Va., Aug. 25 -- United States Patent no. 12,716,596, issued on Aug. 25, was assigned to DAIKIN INDUSTRIES LTD. (Osaka, Japan).
"Indoor unit and air conditioner" was invented by Hiroyuki Nakano (Osaka, Japan), Shota Ago (Osaka, Japan) and Atsushi Yamamoto (Osaka, Japan).
According to the abstract* released by the U.S. Patent & Trademark Office: "An indoor unit includes a heat exchanger and a connection pipe, connected to the heat exchanger, through which a refrigerant flows. The connection pipe includes a first refrigerant pipe made of a first metal and a second refrigerant pipe made of a second metal higher in potential than the first metal. One end of the first refrigerant pipe is connected to the heat exchanger, and the othe...