ALEXANDRIA, Va., Sept. 17 -- United States Patent no. 12,419,192, issued on Sept. 16, was assigned to Merck Patent GmbH (Darmstadt, Germany).
"Organic electroluminescence devices" was invented by Amir Parham (Frankfurt am Main, Germany), Jonas Kroeber (Frankfurt am Main, Germany), Jens Engelhart (Darmstadt, Germany), Anja Jatsch (Frankfurt am Main, Germany), Christian Eickhoff (Mannheim, Germany), Christian Ehrenreich (Darmstadt, Germany) and Dominik Joosten (Ober-Ramstadt, Germany).
According to the abstract* released by the U.S. Patent & Trademark Office: "The invention relates to organic electroluminescence devices containing indone carbazole derivatives."
The patent was filed on June 3, 2019, under Application No. 16/972,877.
*For f...