ALEXANDRIA, Va., May 12 -- United States Patent no. 12,624,289, issued on May 12, was assigned to MERCK PATENT GMBH (Darmstadt, Germany).
"Liquid-crystalline medium" was invented by Atsutaka Manabe (Darmstadt, Germany), Rocco Fortte (Darmstadt, Germany) and Harald Hirschmann (Darmstadt, Germany).
According to the abstract* released by the U.S. Patent & Trademark Office: "A liquid-crystal material (LC media) containing thiophene compounds which are stabilized by sterically hindered amines or amine derivatives (HALS, hindered amine light stabilizers), where the LC media contains one or more compounds of formula 13and one or more compounds of formula Hand liquid-crystal displays (LC displays) which contain these LC materials."
The patent wa...