ALEXANDRIA, Va., April 21 -- United States Patent no. 12,606,741, issued on April 21, was assigned to Semiconductor Energy Laboratory Co. Ltd. (Japan).

"Compound, light-emitting device, light-emitting apparatus, electronic device, and lighting device" was invented by Takuya Haruyama (Atsugi, Japan), Satoshi Seo (Sagamihara, Japan) and Nobuharu Ohsawa (Zama, Japan).

According to the abstract* released by the U.S. Patent & Trademark Office: "A novel compound is provided. The novel compound is represented by General Formula (G1).In General Formula (G1), A represents a substituted or unsubstituted condensed aromatic ring having 10 to 30 carbon atoms or a substituted or unsubstituted condensed heteroaromatic ring having 10 to 30 carbon atoms, ...