ALEXANDRIA, Va., June 2 -- United States Patent no. 12,644,659, issued on June 2, was assigned to HANON SYSTEMS (Daejeon, South Korea).

"Heat exchanger inlet and outlet pipe connection structure" was invented by Ling Bai (Northville, Mich.), Guglielmo Abate (Canton, Mich.), James L. Smitterberg (Grass Lake, Mich.) and Davon James Laird (Commerce Township, Mich.).

According to the abstract* released by the U.S. Patent & Trademark Office: "A heat exchanger includes a pipe connection structure including a first coupling element and a second coupling element. The first coupling element includes a through-hole formed therethrough and the second coupling element includes a blind hole formed therein. A manifold tank includes a first tank compart...