ALEXANDRIA, Va., Sept. 15 -- United States Patent no. 12,735,435, issued on Sept. 15, was assigned to SFC Co. LTD. (Cheongju-si, South Korea).

"Polycyclic aromatic derivative compound and organic light-emitting device using same" was invented by Byung-sun Yang (Cheongju-si, South Korea), Sung-hoon Joo (Cheongju-si, South Korea), Bong-ki Shin (Cheongju-si, South Korea), Ji-hwan Kim (Cheongju-si, South Korea), Hyeon-jun Jo (Cheongju-si, South Korea) and Sung-eun Choi (Cheongju-si, South Korea).

According to the abstract* released by the U.S. Patent & Trademark Office: "A polycyclic aromatic derivative compound according to the present invention is employed in an organic layer in a device, thus being able to implement a high-efficiency organ...