ALEXANDRIA, Va., Aug. 20 -- United States Patent no. 12,391,639, issued on Aug. 19, was assigned to CJ CHEILJEDANG Corp. (Seoul, South Korea).
"Membrane separation process for separating carbonate-containing diaminoalkane solution" was invented by Ho Bum Park (Seoul, South Korea), Tae Hoon Lee (Daejeon, South Korea), Jaehun Lee (Seoul, South Korea), Young Lyeol Yang (Seoul, South Korea), Changyub Oh (Seoul, South Korea), Jung Min Lee (Seoul, South Korea) and Jihyun Shin (Seoul, South Korea).
According to the abstract* released by the U.S. Patent & Trademark Office: "A method of removing carbon dioxide from a carbonate-containing diaminoalkane solution, the method including passing the carbonate-containing diaminoalkane solution through a ...