ALEXANDRIA, Va., Oct. 21 -- United States Patent no. 12,768,474, issued on Oct. 20, was assigned to Hilti AG (Schaan, Liechtenstein).
"Fire protection collar" was invented by Christian Forg (Buchloe, Germany).
According to the abstract* released by the U.S. Patent & Trademark Office: "A fire protection collar for a pipe has a belt package at least in part having an intumescent material, a first and a second closure element. The first closure element is arranged at a first end of the belt package and the second closure element is arranged at a second end of the belt package opposite the first end. The first closure element and the second closure element can be fastened together in such a way that the belt package forms a substantially clos...