ALEXANDRIA, Va., Feb. 17 -- United States Patent no. 12,553,242, issued on Feb. 17, was assigned to SIKA TECHNOLOGY AG (Baar, Switzerland).
"Roofing membrane with protective film" was invented by Albert J. Duhamel (Tiverton, R.I.) and Brian J. Whelan (Canton, Mass.).
According to the abstract* released by the U.S. Patent & Trademark Office: "A roofing membrane composite includes a roofing membrane and a protective film removable affixed to a top major surface of the roofing membrane without an adhesive layer between the protective film and the roofing membrane, wherein the protective film includes at least one layer with at least one polyolefin. A method for producing a roofing membrane composite and a method for waterproofing a roof subs...