US Patent Issued to KYULUX on March 17 for "Compound, luminescent material, delayed fluorescent material, and organic optical device" (Japanese Inventors)

ALEXANDRIA, Va., March 17 -- United States Patent no. 12,581,852, issued on March 17, was assigned to KYULUX INC. (Fukuoka, Japan).

"Compound, luminescent material, delayed fluorescent material, and organic optical device" was invented by Yong Joo Cho (Fukuoka, Japan), YuSeok Yang (Fukuoka, Japan), Masataka Yamashita (Fukuoka, Japan), Yoshitake Suzuki (Fukuoka, Japan) and Kaori Fujisawa (Fukuoka, Japan).

According to the abstract* released by the U.S. Patent & Trademark Office: "The compound represented by the following formula is useful as a light-emitting material. R1 or R2 is Het-LA-* or CN-LA-*; one to three of R1 to R5 are diarylamino groups; the rest are a hydrogen atom or an aryl group; Het is a heteroaryl group; and LA is a single...