ALEXANDRIA, Va., June 16 -- United States Patent no. 12,655,086, issued on June 16, was assigned to LG CHEM Ltd. (Seoul, South Korea).

"Method for preparing ester-based composition" was invented by Hyun Kyu Kim (Daejeon, South Korea), Jeong Ju Moon (Daejeon, South Korea), Eun Suk Kim (Daejeon, South Korea), Yun Gon Heo (Daejeon, South Korea) and Joo Ho Kim (Daejeon, South Korea).

According to the abstract* released by the U.S. Patent & Trademark Office: "The present invention relates to a method for continuously preparing an ester-based composition, the method increasing a preparation yield by optimizing pressure of a reactor as a process variable of each reactor of a reaction unit in which a plurality of reactors are connected in series....