ALEXANDRIA, Va., Oct. 27 -- United States Patent no. 12,774,293, issued on Oct. 27, was assigned to IDEMITSU KOSAN Co. LTD. (Tokyo).
"Compound, material for organic electroluminescent element, organic electroluminescent element and electronic device" was invented by Yuichi Nishimae (Basel, Switzerland), Annemarie Wolleb (Basel, Switzerland), Pierre Boufflet (Basel, Switzerland) and Thomas Schaefer (Basel, Switzerland).
According to the abstract* released by the U.S. Patent & Trademark Office: "A compound has, in a molecule, a cyclic structure represented by a formula (1) below; and at least one cyclic structure selected from the group consisting of a cyclic structure represented by a formula (10) below and a cyclic structure represented b...