ALEXANDRIA, Va., July 16 -- United States Patent no. 12,668,583, issued on June 30, was assigned to LT MATERIALS Co. LTD. (Yongin-Si, South Korea).
"Heterocyclic compound and organic light-emitting device comprising same" was invented by Gi-Back Lee (Yongin-si, South Korea), Hyun-Ju La (Yongin-si, South Korea), Won-Jang Jeong (Yongin-si, South Korea) and Dong-Jun Kim (Yongin-si, South Korea).
According to the abstract* released by the U.S. Patent & Trademark Office: "The present application provides a heterocyclic compound capable of significantly enhancing lifetime, efficiency, electrochemical stability and thermal stability of an organic light emitting device, and an organic light emitting device comprising the heterocyclic compound in ...