ALEXANDRIA, Va., Oct. 21 -- United States Patent no. 12,441,715, issued on Oct. 14, was assigned to Merck Patent GmbH (Darmstadt, Germany).
"Materials for organic electroluminescent devices" was invented by Amir Hossain Parham (Darmstadt, Germany), Thomas Eberle (Darmstadt, Germany), Anja Jatsch (Darmstadt, Germany), Tobias Grossmann (Darmstadt, Germany), Jonas Valentin Kroeber (Darmstadt, Germany), Elvira Montenegro (Darmstadt, Germany) and Caroline Wern (Darmstadt, Germany).
According to the abstract* released by the U.S. Patent & Trademark Office: "The present invention describes amines with dibenzofuran, dibenzothiophene and fluorene groups, especially for use as triplet matrix materials in organic electroluminescent devices. The inve...