ALEXANDRIA, Va., June 9 -- United States Patent no. 12,286,444, issued on April 29, was assigned to Canon K.K. (Tokyo).
"Organic compound and organic light-emitting device" was invented by Hirokazu Miyashita (Kanagawa, Japan), Naoki Yamada (Tokyo), Yosuke Nishide (Kanagawa, Japan) and Jun Kamatani (Tokyo).
According to the abstract* released by the U.S. Patent & Trademark Office: "An organic compound represented by formula [1] or [2]:where X1 to X20 are each independently selected from a hydrogen atom, a halogen atom, and alkyl, alkoxy, amino, aromatic hydrocarbon, heterocyclic, aryloxy, heteroaryloxy, silyl, and cyano groups, in which at least one of X1 to X10 and at least one of X11 to X20 are each an amino group or a group containing a...