ALEXANDRIA, Va., Oct. 21 -- United States Patent no. 12,441,836, issued on Oct. 14, was assigned to LG Chem Ltd. (Seoul, South Korea).
"Polycarbonate resin and preparation method thereof" was invented by Il Hwan Choi (Daejeon, South Korea), Kyeongmun Kim (Daejeon, South Korea), Hye Jin Yim (Daejeon, South Korea), Jaesoon Bae (Daejeon, South Korea), Jonghwa Baek (Daejeon, South Korea), Hyeonah Shin (Daejeon, South Korea) and Min Suk Jung (Daejeon, South Korea).
According to the abstract* released by the U.S. Patent & Trademark Office: "A polycarbonate resin including a unit of Chemical Formula 1 and a unit of Chemical Formula 2, a method for preparing the same, a polycarbonate resin composition including the same, and a molded article are ...