ALEXANDRIA, Va., Jan. 13 -- United States Patent no. 12,522,693, issued on Jan. 13, was assigned to LG CHEM Ltd. (Seoul, South Korea).
"Copolymer and preparation method thereof" was invented by Jung Yun Choi (Daejeon, South Korea), Chul Woong Kim (Daejeon, South Korea), Yeonju Lee (Daejeon, South Korea) and Suhyun Cho (Daejeon, South Korea).
According to the abstract* released by the U.S. Patent & Trademark Office: "Provided is a copolymer comprising an irregularly arranged structure of a repeating unit of the following Chemical Formula 1 and a repeating unit of the following Chemical Formula 2, and a repeating unit of the following Chemical Formula 3 present at least at one end of the structure:and is characterized by having an improved ...