US Patent Issued to UDC Ireland on April 14 for "Organic electroluminescent element and novel iridium complex" (Japanese Inventors)

ALEXANDRIA, Va., April 15 -- United States Patent no. 12,604,600, issued on April 14, was assigned to UDC Ireland (Dublin).

"Organic electroluminescent element and novel iridium complex" was invented by Kousuke Watanabe (Kanagawa, Japan) and Yuichirou Itai (Kanagawa, Japan).

According to the abstract* released by the U.S. Patent & Trademark Office: "An iridium complex which has a phenylpyridine bidentate ligand containing a group represented by the following general formula (A):(In the general formula (A), X represents a cyano group or a halogenated alkyl group. L represents a single bond or a divalent linking group. R represents a substituent. n represents an integer of 0 to 4. * represents a binding site to a phenylpyridine bidentate li...