ALEXANDRIA, Va., July 16 -- United States Patent no. 12,669,291, issued on June 30, was assigned to LG Electronics Inc. (Seoul, South Korea).

"Plate heat exchanger" was invented by Sanghoon Yoo (Seoul, South Korea) and Eungyul Lee (Seoul, South Korea).

According to the abstract* released by the U.S. Patent & Trademark Office: "A plate heat exchanger includes a first plate having a first heat transfer region through which a first fluid flows, a first inlet into which the first fluid flows, and a first discharge portion through which the first fluid is discharged, and a second plate having a second heat transfer region through which a second fluid flows, a second inlet into which the second fluid flows, and a second discharge portion throug...