ALEXANDRIA, Va., July 16 -- United States Patent no. 12,669,296, issued on June 30, was assigned to ZHEJIANG DUNAN ARTIFICIAL ENVIRONMENT Co. LTD. (Shaoxing, China).

"Heat exchanger" was invented by Guanjun Wang (Shaoxing, China) and Wenjian Wei (Shaoxing, China).

According to the abstract* released by the U.S. Patent & Trademark Office: "A heat exchanger and a microchannel heat exchanger are provided. The heat exchanger includes a plurality of heat exchange pipes arranged in sequence along a preset direction, each of the plurality of heat exchange pipes is a flat pipe and includes a first pipe segment and a second pipe segment which are connected with each other; the first pipe segments is provided with a preset bending line, and the pre...