ALEXANDRIA, Va., Jan. 28 -- United States Patent no. 12,533,629, issued on Jan. 27, was assigned to LOTTE CHEMICAL Corp. (Seoul, South Korea).
"Gas separation membrane operation method" was invented by Sang Jung Lee (Daejeon, South Korea), Sang A Nam (Daejeon, South Korea) and Myung Wook Kim (Daejeon, South Korea).
According to the abstract* released by the U.S. Patent & Trademark Office: "The present invention relates to a gas separation membrane operation method. The method may include (a) introducing an external gas into a separation membrane module through an inlet line, (b) separating, by the separation membrane module, the external gas into a permeable gas and an impermeable gas according to permeability with respect to a separation...