ALEXANDRIA, Va., March 17 -- United States Patent no. 12,578,684, issued on March 17, was assigned to PRECIFLEX SA (Neuchatel, Switzerland).
"Visual indicator and fluid dispenser" was invented by Jean Gubelmann (Auvernier, Switzerland), Lucien Vouillamoz (Feusisberg, Switzerland) and Alain Jaccard (Ste-Croix, Switzerland).
According to the abstract* released by the U.S. Patent & Trademark Office: "A device for fluid display comprising a fluid, wherein the fluid is displaced by an electrowetting process. The device is filled with at least 2 immiscible fluids, whereas one fluid is located within the electrical field generated by a reference electrode and a control electrode and partially within the electrical field generated by the same ref...