US Patent Issued to Universal Display on Sept. 23 for "Organic electroluminescent materials and devices" (Pennsylvania, New Jersey Inventors)

ALEXANDRIA, Va., Sept. 23 -- United States Patent no. 12,421,262, issued on Sept. 23, was assigned to Universal Display Corp. (Ewing, N.J.).

"Organic electroluminescent materials and devices" was invented by Nicholas J. Thompson (New Hope, Pa.), Hsiao-Fan Chen (Lawrence Township, N.J.) and Rasha Hamze (Philadelphia).

According to the abstract* released by the U.S. Patent & Trademark Office: "A compound of Formula I,or Formula II,is provided. In Formulae I and II, M is Pt or Pd; each RA, RA', RA", RB, R1, R2, R3, R4, and R5 is hydrogen or one of the General Substituents; R1' is one of the General Substituents; at least one of RA', RA", and RB is not hydrogen; any two of RA, RA', RA", RB, R1, R2, R3, R4, and R5 may be joined or fused togeth...