ALEXANDRIA, Va., Feb. 12 -- United States Patent no. 12,222,232, issued on Feb. 11, was assigned to ZOBELE HOLDING S.P.A. (Trento, Italy).

"Removable signaling device of the exhaustion of a dispenser/diffuser of liquid active substances" was invented by Stefano Deflorian (Trento, Italy) and Cedric Morhain (Trento, Italy).

According to the abstract* released by the U.S. Patent & Trademark Office: "A removable signaling device of the exhaustion of a dispenser/diffuser of a liquid active substance contained in a container of the dispenser/diffuser, wherein the device consists of a central body from which project two opposite lateral arms, which surround at least part of the dispenser/diffuser, and an appendix which extends alongside the cont...