ALEXANDRIA, Va., Aug. 12 -- United States Patent no. 12,389,793, issued on Aug. 12, was assigned to LG CHEM Ltd. (Seoul, South Korea).

"Compound and organic light emitting device comprising the same" was invented by Min Woo Jung (Daejeon, South Korea), Dong Hoon Lee (Daejeon, South Korea), Boonjae Jang (Daejeon, South Korea), Jungha Lee (Daejeon, South Korea), Su Jin Han (Daejeon, South Korea), Seulchan Park (Daejeon, South Korea) and Sunghyun Hwang (Daejeon, South Korea).

According to the abstract* released by the U.S. Patent & Trademark Office: "Provided is a compound of Chemical Formula 1: wherein, in Chemical Formula 1. X is O, S, or C(R1R2); R1 and R2 are each independently a substituted or unsubstituted C1-60 alkyl; Ar1 and Ar2 are ...