US Patent Issued to Idemitsu Kosan on July 7 for "Polycyclic compound, and an organic electroluminescence device comprising the polycyclic compound" (Swiss, French Inventors)

ALEXANDRIA, Va., July 7 -- United States Patent no. 12,673,958, issued on July 7, was assigned to Idemitsu Kosan Co. Ltd. (Chiyoda-ku, Japan).

"Polycyclic compound, and an organic electroluminescence device comprising the polycyclic compound" was invented by Yumiko Mizuki (Basel, Switzerland), Michelle Groarke (Binningen, Switzerland), Pierre Boufflet (Basel, Switzerland), Natalia Chebotareva (Hagenthal le Bas, France) and Francois Rime (Delemont, Switzerland).

According to the abstract* released by the U.S. Patent & Trademark Office: "Specific polycyclic compounds of the general formula (I) and a process for their preparation, a material for an organic electroluminescence device comprising said compound, an organic electroluminescence de...