ALEXANDRIA, Va., Oct. 21 -- United States Patent no. 12,440,827, issued on Oct. 14, was assigned to KOREA RESEARCH INSTITUTE OF CHEMICAL TECHNOLOGY (Daejeon, South Korea).

"Catalyst for simultaneously inhibiting emission of ammonia and nitrous oxide" was invented by Iljeong Heo (Daejeon, South Korea), Young Woo You (Daejeon, South Korea), Yun Ho Jeong (Daejeon, South Korea), Ji Hoon Park (Daejeon, South Korea), Jin Hee Lee (Daejeon, South Korea), Soo Min Kim (Daejeon, South Korea) and Tae Sun Chang (Daejeon, South Korea).

According to the abstract* released by the U.S. Patent & Trademark Office: "An object of the present invention is to increase the reduction performance of nitrogen oxides compared to existing three-way catalysts; simulta...