ALEXANDRIA, Va., Aug. 20 -- United States Patent no. 12,392,567, issued on Aug. 19, was assigned to DENSO International America Inc. (Southfield, Mich.).

"Heat exchanger with varying surface roughness" was invented by Sean Schoneboom (Livonia, Mich.).

According to the abstract* released by the U.S. Patent & Trademark Office: "In embodiments, a heat exchanger includes a tube configured to transfer a first fluid. The tube includes an outer surface configured to exchange heat with a second fluid as the second fluid flows over the outer surface of the tube. The tube also includes an inner surface defining an interior configured to contain and transfer the first fluid, and a plurality of surface features integrally formed as part of the inner ...