ALEXANDRIA, Va., Feb. 3 -- United States Patent no. 12,540,111, issued on Feb. 3, was assigned to KOREA RESEARCH INSTITUTE OF CHEMICAL TECHNOLOGY (Daejeon, South Korea) and ELECTROTECHNOLOGY RESEARCH INSTITUTE (Changwon-si, South Korea).

"Method for preparing perfluorodialkyl ether and apparatus for preparing perfluorodialkyl ether" was invented by Sang Goo Lee (Daejeon, South Korea), In Joon Park (Daejeon, South Korea), Won Wook So (Daejeon, South Korea), Shin Hong Yook (Daejeon, South Korea), Hong Suk Kang (Daejeon, South Korea), Eun Ho Sohn (Daejeon, South Korea), Ki Dong Song (Changwon-si, South Korea), Yeon Ho Oh (Changwon-si, South Korea) and Hyun Jae Jang (Gimhae-si, South Korea).

According to the abstract* released by the U.S. Pat...