US Patent Issued to NIPPON STEEL CHEMICAL & MATERIAL on Dec. 23 for "Material for organic electroluminescence element, and organic electroluminescence element" (Japanese Inventors)

ALEXANDRIA, Va., Dec. 23 -- United States Patent no. 12,503,643, issued on Dec. 23, was assigned to NIPPON STEEL CHEMICAL & MATERIAL Co. LTD. (Tokyo).

"Material for organic electroluminescence element, and organic electroluminescence element" was invented by Junya Ogawa (Tokyo), Ayaka Terada (Tokyo), Ikumi Kitahara (Tokyo) and Haruka Izumi (Tokyo).

According to the abstract* released by the U.S. Patent & Trademark Office: "An organic electroluminescent device having high efficiency and high driving stability, and a material suitable for the organic electroluminescent device are provided. The material for organic electroluminescent devices comprises an indolocarbazole compound represented by a general formula (1). In the formula, the ring ...