US Patent Issued to NIPPON STEEL CHEMICAL & MATERIAL on May 26 for "Organic electroluminescent element" (Japanese Inventors)

ALEXANDRIA, Va., May 26 -- United States Patent no. 12,642,001, issued on May 26, was assigned to NIPPON STEEL CHEMICAL & MATERIAL Co. LTD. (Tokyo).

"Organic electroluminescent element" was invented by Junya Ogawa (Tokyo), Masashi Tada (Tokyo), Takahiro Kai (Tokyo), Kazunari Yoshida (Tokyo) and Ikumi Kitahara (Tokyo).

According to the abstract* released by the U.S. Patent & Trademark Office: "To provide an organic electroluminescent device having high efficiency while having a driving voltage. This organic electroluminescent device includes an anode, an organic layer and a cathode stacked on a substrate, at least one layer of the organic layer is a light-emitting layer containing a first host, a second host and a light-emitting dopant mat...