ALEXANDRIA, Va., Oct. 28 -- United States Patent no. 12,454,542, issued on Oct. 28, was assigned to UDC Ireland Ltd. (Dublin).

"Metal complexes for use as emitters in organic electroluminescence devices" was invented by Philipp Stoessel (Frankfurt am Main, Germany) and Christian Ehrenreich (Darmstadt, Germany).

According to the abstract* released by the U.S. Patent & Trademark Office: "The present invention relates to metal complexes which are substituted by aromatic and icylic aliphatic substituents and are suitable for use as emitters in organic electroluminescent devices. The electronic devices of the invention, especially organic electroluminescent devices, are notable for advantages that are not accompanied by a deterioration in the ...