US Patent Issued to Universal Display on March 18 for "Organic electroluminescent materials and devices" (New Jersey, Pennsylvania Inventors)

ALEXANDRIA, Va., March 19 -- United States Patent no. 12,252,499, issued on March 18, was assigned to Universal Display Corp. (Ewing, N.J.).

"Organic electroluminescent materials and devices" was invented by Peter Wolohan (Princeton Junction, N.J.), Tyler Fleetham (Yardley, Pa.) and Hsiao-Fan Chen (Lawrence Township, N.J.).

According to the abstract* released by the U.S. Patent & Trademark Office: "A compound of the following Formula Iis provided. In Formula I, A is C, B, Si, Ge, or Sn; each of X1 to X22 is independently C or N; Z1 and Z2 are each independently B or N; when A is B, one of X4, X5, X12, and X22 is N, and the remainder are C; when A is C, at least one of Z1 and Z2 is B; each of Y1, Y2, Y3, and Y4 is independently O, S, Se, N...