ALEXANDRIA, Va., Feb. 19 -- United States Patent no. 12,227,525, issued on Feb. 18, was assigned to Universal Display Corp. (Ewing, N.J.).

"Organic electroluminescent materials and devices" was invented by Bin Ma (Plainsboro, N.J.).

According to the abstract* released by the U.S. Patent & Trademark Office: "Provided are compounds of formula Ir(L1)x(L2)y(L3)z where L1 hasL1 forms a 5-membered chelate ring with Ir; and L2 and L3 can be the same or different and have"

The patent was filed on July 20, 2020, under Application No. 16/933,458.

*For further information, including images, charts and tables, please visit: http://patft.uspto.gov/netacgi/nph-Parser?Sect1=PTO2&Sect2=HITOFF&p=1&u=%2Fnetahtml%2FPTO%2Fsearch-bool.html&r=1&f=G&l=50&co1=...