ALEXANDRIA, Va., Sept. 23 -- United States Patent no. 12,426,502, issued on Sept. 23, was assigned to BEIJING SUMMER SPROUT TECHNOLOGY Co. LTD. (Beijing).
"Electroluminescent materials and devices" was invented by Han Zhang (Beijing), Le Wang (Beijing), Junfei Wang (Beijing), Qiang Wang (Beijing), Chi Yuen Raymond Kwong (Beijing) and Chuanjun Xia (Beijing).
According to the abstract* released by the U.S. Patent & Trademark Office: "Provided are an electroluminescent material and device. The electroluminescent material is a compound having an indole- and pyrrole-fused azamacrocycle structure segment which is connected to quinazoline having a substitution on a specific ring, quinoxaline having a substitution on a specific ring, or a similar...