ALEXANDRIA, Va., Aug. 12 -- United States Patent no. 12,385,695, issued on Aug. 12, was assigned to Hamilton Sundstrand Corp. (Charlotte, N.C.).

"Heat exchanger with build powder in barrier channels" was invented by James Streeter (Torrington, Conn.) and Michael Zager (Windsor, Conn.).

According to the abstract* released by the U.S. Patent & Trademark Office: "An additively manufactured heat exchanger configured to transfer heat between a first fluid and a second fluid includes a first channel with a first wall configured to port flow of a first fluid and a second channel with a second wall configured to port flow of a second fluid. The heat exchanger also includes a barrier channel containing unprocessed build powder provided by the addi...