US Patent Issued to IDEMITSU KOSAN Co. on March 24 for "Compound, material for organic electroluminescent element, organic electroluminescent element, and electronic equipment" (Japanese, Swiss Inventors)

ALEXANDRIA, Va., March 24 -- United States Patent no. 12,584,067, issued on March 24, was assigned to IDEMITSU KOSAN Co. LTD. (Tokyo).

"Compound, material for organic electroluminescent element, organic electroluminescent element, and electronic equipment" was invented by Hiromi Nakano (Chiyoda-ku, Japan), Hisato Matsumoto (Chiyoda-ku, Japan) and Yuichi Nishimae (Basel, Switzerland).

According to the abstract* released by the U.S. Patent & Trademark Office: "A compound of formula (1)wherein X1 is CR1 or a nitrogen atom, X2 is CR2 or a nitrogen atom, X3 is CR3 or a nitrogen atom, X4 is CR4 or a nitrogen atom, X5 is CR5 or a nitrogen atom, X6 is CR6 or a nitrogen atom, X7 is CR7, a nitrogen atom, or a carbon atom single-bonded to X8, X8 is ...