US Patent Issued to LG CHEM on Sept. 23 for "Compound and organic light emitting device comprising same" (South Korean Inventors)

ALEXANDRIA, Va., Sept. 23 -- United States Patent no. 12,421,449, issued on Sept. 23, was assigned to LG CHEM Ltd. (Seoul, South Korea).

"Compound and organic light emitting device comprising same" was invented by Seonwoo Kim (Daejeon, South Korea), Wanpyo Hong (Daejeon, South Korea), Sujeong Geum (Daejeon, South Korea), Moung Gon Kim (Daejeon, South Korea) and Kyunghee Kim (Daejeon, South Korea).

According to the abstract* released by the U.S. Patent & Trademark Office: "Provided is a compound of Chemical Formula 1: wherein: X1 is O or A1 is an aromatic hydrocarbon ring or a hetero ring; at least one of A2 and A3 is a hetero ring comprising S or O, and the other is an aromatic hydrocarbon ring, and when each of A2 and A3 are a hetero rin...