ALEXANDRIA, Va., March 31 -- United States Patent no. 12,590,741, issued on March 31, was assigned to CARRIER Corp. (Palm Beach Gardens, Fla.).

"Lubricant recovery system for heat exchange system and heat exchange system" was invented by Biao Shu (Shanghai).

According to the abstract* released by the U.S. Patent & Trademark Office: "A lubricant recovery system for a heat exchange system, and a heat exchange system. The heat exchange system includes a compressor, a condenser, an expansion device and an evaporator connected in sequence to form a loop, and further includes a reservoir for storing lubricant and in communication with the compressor, and the lubricant recovery system includes: a first flow path disposed between a suction chambe...