ALEXANDRIA, Va., Aug. 12 -- United States Patent no. 12,707,889, issued on Aug. 11, was assigned to Universal Display Corp. (Ewing, N.J.).
"Organic electroluminescent materials and devices" was invented by Bin Ma (Plainsboro, N.J.) and Bert Alleyne (Newtown, Pa.).
According to the abstract* released by the U.S. Patent & Trademark Office: "Provided are fused-indole containing compounds which contain as a further structural unit at least one of pyrimidine, triazine, quinazoline, benzene, biphenyl, terphenyl, naphthalene, phenanthrene, anthracene, triphenylene, pyridine, pyrazine, fluorene, dibenzofuran, dibenzothiophene, carbazole, quinoline, isoquinoline, triarylboryl or quinoxaline, which may be further substituted. Also provided are form...