US Patent Issued to IDEMITSU KOSAN on Feb. 18 for "Compound, and organic electroluminescence device and electronic apparatus using the same" (Japanese Inventors)

ALEXANDRIA, Va., Feb. 19 -- United States Patent no. 12,232,419, issued on Feb. 18, was assigned to IDEMITSU KOSAN Co. LTD. (Tokyo).

"Compound, and organic electroluminescence device and electronic apparatus using the same" was invented by Ryota Takahashi (Sodegaura, Japan), Keita Seda (Sodegaura, Japan) and Shota Sawano (Sodegaura, Japan).

According to the abstract* released by the U.S. Patent & Trademark Office: "A compound represented by the following formula (1): wherein in the formula (1), rings X1 to X4 independently a substituted or unsubstituted benzene ring, or a substituted or unsubstituted 6-membered aromatic heterocyclic ring having one or two nitrogen atoms, and at least two of the rings X1 to X4 are independently fused with ...