US Patent Issued to Merck Patent on July 22 for "Spirobifluorene compounds for organic electroluminescent devices" (German, Spanish Inventors)

ALEXANDRIA, Va., July 23 -- United States Patent no. 12,365,646, issued on July 22, was assigned to Merck Patent GmbH (Damstadt, Germany).

"Spirobifluorene compounds for organic electroluminescent devices" was invented by Elvira Montenegro (Weinheim, Germany), Amir Hossain Parham (Frankfurt am Main, Germany), Philipp Stoessel (Frankfurt am Main, Germany), Teresa Mujica-Fernaud (Tenerife, Spain), Frank Voges (Bad Duerkheim, Germany) and Arne Buesing (Frankfurt am Main, Germany).

According to the abstract* released by the U.S. Patent & Trademark Office: "The present invention relates to spirobifluorene compounds of the formula (1) which are suitable for use in electronic devices, in particular organic electroluminescent devices, and to elec...