ALEXANDRIA, Va., Sept. 23 -- United States Patent no. 12,421,922, issued on Sept. 23, was assigned to AGENCY FOR DEFENSE DEVELOPMENT (Daejeon, South Korea).

"Water-cooled flue gas collecting apparatus and wake treatment system including the same" was invented by Seong-Pil Joo (Daejeon, South Korea), Seon-Uk Heo (Daejeon, South Korea), Ji-Su Yoon (Daejeon, South Korea), Jun-Young Heo (Daejeon, South Korea) and Seok-Jin Oh (Daejeon, South Korea).

According to the abstract* released by the U.S. Patent & Trademark Office: "The present invention provides a water-cooled flue gas collecting apparatus disposed in a flow path formed inside a wake treatment structure for cooling and discharging flue gas generated from a test propulsion system. The ...