ALEXANDRIA, Va., Nov. 6 -- United States Patent no. 12,459,962, issued on Nov. 4, was assigned to SFC Co. LTD (Cheongju-si, South Korea).

"Polycyclic compound and organic light emitting device using the same" was invented by Sung-hoon Joo (Cheongju-si, South Korea), Bong-ki Shin (Cheongju-si, South Korea), Ji-hwan Kim (Cheongju-si, South Korea), Kyung-hwa Park (Cheongju-si, South Korea), Hyeon-jun Jo (Cheongju-si, South Korea), Seong-eun Woo (Cheongju-si, South Korea), Sung-eun Choi (Cheongju-si, South Korea) and Soo-kyung Kang (Cheongju-si, South Korea).

According to the abstract* released by the U.S. Patent & Trademark Office: "Disclosed is a polycyclic compound that can be employed in various organic layers of an organic electrolumines...