ALEXANDRIA, Va., Oct. 21 -- United States Patent no. 12,440,800, issued on Oct. 14, was assigned to KOREA RESEARCH INSTITUTE OF CHEMICAL TECHNOLOGY (Daejeon, South Korea).

"Separation and recovery system and method of hydrogen from coke oven gas(COG) in steel industry" was invented by Jeong Hoon Kim (Daejeon, South Korea), Bo Ryoung Park (Daejeon, South Korea) and Ho Cheol Kang (Daejeon, South Korea).

According to the abstract* released by the U.S. Patent & Trademark Office: "The present invention relates to a system and method for separating and recovering hydrogen from coke oven gas (COG) in steel industry, particularly a system and method for separating and recovering hydrogen at a concentration of 99.9% by volume or more from coke ove...