ALEXANDRIA, Va., July 30 -- United States Patent no. 12,371,895, issued on July 29, was assigned to Schluter Systems LP (Plattsburgh, N.Y.).

"Waterproof membrane with cross-laminated film" was invented by Peter Nielsen (Greer, S.C.), William M. DeJesus (Charlotte, N.C.) and Michael J. Rancich (Houston).

According to the abstract* released by the U.S. Patent & Trademark Office: "A waterproof extrusion laminated flexible membrane that may be seamlessly applied to an irregularity on a substrate supporting a finished surface for waterproofing that includes first and second polypropylene non-woven layers each having first and second surfaces, a water impermeable HDPE oriented cross laminated film layer, a first tie layer between the first non-...