US Patent Issued to Mitsubishi Chemical on Oct. 6 for "Iridium complex compound, iridium-complex-compound-containing composition, organic electroluminescent element and method for producing same, organic EL display device, and organic EL illuminator" (Japanese Inventors)

ALEXANDRIA, Va., Oct. 6 -- United States Patent no. 12,753,195, issued on Oct. 6, was assigned to Mitsubishi Chemical Corp. (Tokyo).

"Iridium complex compound, iridium-complex-compound-containing composition, organic electroluminescent element and method for producing same, organic EL display device, and organic EL illuminator" was invented by Kazuhiro Nagayama (Tokyo), Akane Kato (Tokyo), Mami Yamashita (Tokyo), Tomohiro Abe (Tokyo) and Daisuke Hiro (Tokyo).

According to the abstract* released by the U.S. Patent & Trademark Office: "The present invention relates to an iridium complex compound represented by the following formula (1):in the formula (1), Ir represents an iridium atom, R5 to R14, R21, and R22 each independently represent a ...