ALEXANDRIA, Va., June 25 -- United States Patent no. 12,338,254, issued on June 24, was assigned to Canon K.K. (Tokyo).
"Organic compound and organic light-emitting device" was invented by Hirokazu Miyashita (Kanagawa, Japan), Jun Kamatani (Tokyo), Naoki Yamada (Tokyo), Hiroki Ohrui (Tokyo), Yosuke Nishide (Kanagawa, Japan) and Satoru Shiobara (Kanagawa, Japan).
According to the abstract* released by the U.S. Patent & Trademark Office: "An organic compound represented by formula [1]:where R1 to R14 are each independently selected from the group consisting of a hydrogen atom and substituents, wherein at least one of R1 to R4 and R8 to R11 is an amino group or an amino group-containing group, and X is oxygen, sulfur, selenium, tellurium, or...