ALEXANDRIA, Va., April 15 -- United States Patent no. 12,604,660, issued on April 14, was assigned to Merck Patent GmbH (Darmstadt, Germany).
"Electronic device" was invented by Frank Voges (Darmstadt, Germany), Teresa Mujica-Fernaud (Darmstadt, Germany), Elvira Montenegro (Darmstadt, Germany) and Thomas Eberle (Darmstadt, Germany).
According to the abstract* released by the U.S. Patent & Trademark Office: "The present application relates to an electronic device comprising a xanthene or thioxanthene compound of a particular formula. The electronic device is preferably an organic electroluminescent device (OLED). The application further relates to particular xanthene or thioxanthene compounds as such, and to the use thereof in the abovemen...