ALEXANDRIA, Va., Aug. 5 -- United States Patent no. 12,701,915, issued on Aug. 4, was assigned to Universal Display Corp. (Ewing, N.J.).
"Organic electroluminescent materials and devices" was invented by Bin Ma (Plainsboro, N.J.), Alexey Borisovich Dyatkin (Ambler, Pa.), Bert Alleyne (Newtown, Pa.), Zhaoqun Zhou (Bedford, Mass.), Yuxin Shen (Hong Kong), Lixia Zhang (Hong Kong) and Ting-Chih Wang (Lawrenceville, N.J.).
According to the abstract* released by the U.S. Patent & Trademark Office: "A compound having a structure of Formula I,provided. In Formula I, each of R1 to R7 is hydrogen or phenyl or a system consisting of two to ten phenyl groups connected to each other; at least two of R1 to R7 are not hydrogen; each of R8 and R9 are phe...