ALEXANDRIA, Va., April 7 -- United States Patent no. 12,598,911, issued on April 7, was assigned to LT MATERIALS Co. LTD. (Yongin-si, South Korea).
"Organic light-emitting element and composition for organic material layer thereof" was invented by Su-Jin Kwon (Yongin-si, South Korea), Yong-Hui Lee (Yongin-si, South Korea), Ji-Young Kim (Yongin-si, South Korea), Jun-Tae Mo (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 specification relates to an organic light emitting device including Compound (A) represented by Chemical Formula 1 and Compound (B) represented by any one of Chemical Formulae 2 to 4."
The patent was filed on Dec. 18...