ALEXANDRIA, Va., June 4 -- United States Patent no. 12,318,641, issued on June 3, was assigned to Hilti AG (Schaan, Liechtenstein).
"Fire protection element for sealing passage openings in components" was invented by Andreas Ahlers (Westendorf, Germany) and Sebastian Simon (Lindenberg, Germany).
According to the abstract* released by the U.S. Patent & Trademark Office: "A fire protection element contains a layered body for sealing passage openings in components, such as building components, through which lines are guided. A method can be used for producing the fire protection element and the fire protection element can be used for sealing passage openings and/or joints in components against fire and flue gases."
The patent was filed on O...