US Patent Issued to IDEMITSU KOSAN on June 9 for "Electroluminescent element, organic electroluminescent element, and electronic appliance" (Japanese Inventors)

ALEXANDRIA, Va., June 9 -- United States Patent no. 12,649,731, issued on June 9, was assigned to IDEMITSU KOSAN Co. LTD. (Chiyoda-ku, Japan).

"Electroluminescent element, organic electroluminescent element, and electronic appliance" was invented by Masatoshi Saito (Sodegaura, Japan), Kei Yoshida (Sodegaura, Japan), Yoshinori Aoyama (Sodegaura, Japan), Masato Mitani (Sodegaura, Japan) and Sayaka Mizutani (Sodegaura, Japan).

According to the abstract* released by the U.S. Patent & Trademark Office: "A compound represented by the following formula (1):where X1, X2, Y1 to Y3, L, *a, R1 to R9, R11 to R18, R21 to R27, and R31 to R34 are as defined in the description. A material for an organic electroluminescent device, the material including t...