ALEXANDRIA, Va., Nov. 25 -- United States Patent no. 12,479,863, issued on Nov. 25, was assigned to Universal Display Corp..
"Organic electroluminescent materials and devices" was invented by Peter Wolohan (Ewing, N.J.).
According to the abstract* released by the U.S. Patent & Trademark Office: "A compound of Formula I wherein X1 to X8 are independently selected from C or N, and Y is selected from the group consisting of NR2, O, S, Se, CR3R4, SiR3R4, and GeR3R4. RA and RB represent mono to the maximum allowable substitution, or no substitution. The compounds of Formula I will also have at least one of RA, RB, R1, R2, R3, or R4 that comprises a structure selected from the group consisting of formula A, formula B, and formula C as described...