ALEXANDRIA, Va., April 21 -- United States Patent no. 12,610,735, issued on April 21, was assigned to IDEMITSU KOSAN Co. LTD. (Tokyo).

"Organic electroluminescence device and electronic apparatus" was invented by Yongguk Lee (Sodegaura, Japan), Ryoji Maeda (Sodegaura, Japan), Yuki Nakano (Sodegaura, Japan) and Hiroaki Itoi (Sodegaura, Japan).

According to the abstract* released by the U.S. Patent & Trademark Office: "An organic electroluminescence device, comprising a cathode, an anode, and at least one emitting layer disposed between the cathode and the anode, wherein the emitting layer contains a first host material, a second host material, and a dopant material, wherein the first host material is a compound represented by the following...