ALEXANDRIA, Va., June 5 -- United States Patent no. 12,275,698, issued on April 15, was assigned to LG CHEM Ltd. (Seoul, South Korea).

"Method of preparing diester-based material" was invented by Jae Hun Jeong (Daejeon, South Korea), Sung Kyu Lee (Daejeon, South Korea), Yeon Uk Choo (Daejeon, South Korea), Song Hoon Lee (Daejeon, South Korea), Hyoung Jun (Daejeon, South Korea) and Yun Gon Heo (Daejeon, South Korea).

According to the abstract* released by the U.S. Patent & Trademark Office: "A diester-based material can be prepared continuously including a reaction part in which a total of n reaction units from a first reaction unit to an nth reaction unit are connected in series, the reaction unit including a reactor which esterifies dica...