ALEXANDRIA, Va., Jan. 28 -- United States Patent no. 12,534,404, issued on Jan. 27, was assigned to KNAUF GIPS KG (Iphofen, Germany).

"Mineral binder based construction material with improved fire resistance behavior" was invented by Peter Dostal (Markt Einersheim, Germany) and David Weigand (Ochsenfurt, Germany).

According to the abstract* released by the U.S. Patent & Trademark Office: "Mineral binder based construction materials are disclosed, including thermally pre-treated silicate glass fibers and colloidal silica and further additives, which have increased fire resistance such that they have a delayed shrinkage when exposed to high temperatures relative to a mineral binder based construction material with conventional glass fibers ...