ALEXANDRIA, Va., June 2 -- United States Patent no. 12,648,352, issued on June 2, was assigned to DuPont Specialty Materials Korea Ltd. (South Korea).
"Plurality of host materials and organic electroluminescent device comprising the same" was invented by Bitnari Kim (Gyeonggi-do, South Korea), Su-Hyun Lee (Gyeonggi-do, South Korea), So-Young Jung (Gyeonggi-do, South Korea), Ji-Won Um (Gyeonggi-do, South Korea), Jeong-Eun Yang (Gyeonggi-do, South Korea) and Sang-Hee Cho (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 material comprising a compound represented by formula 1, and a second host materia...