US Patent Issued to IDEMITSU KOSAN on Dec. 9 for "Organic electroluminescent element and electronic device" (Japanese, South Korean, Swiss Inventors)

ALEXANDRIA, Va., Dec. 9 -- United States Patent no. 12,492,162, issued on Dec. 9, was assigned to IDEMITSU KOSAN Co. LTD. (Tokyo).

"Organic electroluminescent element and electronic device" was invented by Ryota Takahashi (Ichihara, Japan), Tomoki Kato (Ichihara, Japan), Hirokatsu Ito (Ichihara, Japan), Masahiro Kawamura (Basel, Switzerland), Masakazu Funahashi (Chiba, Japan), Hiroyuki Saito (Goyang-si, South Korea), Yuichiro Kawamura (Chiba, Japan), Yoshiaki Takahashi (Chiba, Japan), Tetsuya Masuda (Chiba, Japan) and Hitoshi Kuma (Sodegaura, Japan).

According to the abstract* released by the U.S. Patent & Trademark Office: "Compounds of formulae (2-7) or (2-9) are provided:Also provided are organic electroluminescence (EL) devices contai...