ALEXANDRIA, Va., March 24 -- United States Patent no. 12,584,640, issued on March 24, was assigned to DAIKIN INDUSTRIES LTD. (Osaka, Japan).
"Ventilator" was invented by Kumiko Saeki (Osaka, Japan), Yuta Iyoshi (Osaka, Japan) and Yoshiki Yamanoi (Osaka, Japan).
According to the abstract* released by the U.S. Patent & Trademark Office: "A ventilator includes: a refrigerant circuit through which a refrigerant flows and that includes a compressor, first heat exchangers, and a second heat exchanger that are connected by a refrigerant pipe; air supply fans that supply air from an outdoor space to indoor spaces through the first heat exchangers; an exhaust fan that exhausts air from the indoor spaces to the outdoor space through the second heat...