ALEXANDRIA, Va., July 21 -- United States Patent no. 12,690,386, issued on July 21, was assigned to DuPont Specialty Materials Korea Ltd. (South Korea).
"Plurality of host materials and organic electroluminescent device comprising the same" was invented by Su-Hyun Lee (Gyeonggi-do, South Korea), Bitnari Kim (Gyeonggi-do, South Korea), So-Young Jung (Gyeonggi-do, South Korea), Hyo-Nim Shin (Gyeonggi-do, South Korea) and Mi-Ja Lee (Gyeonggi-do, South Korea).
According to the abstract* released by the U.S. Patent & Trademark Office: "The present disclosure relates to a plurality of host materials comprising a first host compound represented by formula 1 and a second host compound represented by formula 2 and an organic electroluminescent dev...