US Patent Issued to Johns Manville on Oct. 7 for "Double pass process of making a self adhering roofing membrane with improved adhesion at lower installation temperature" (Colorado Inventors)

ALEXANDRIA, Va., Oct. 8 -- United States Patent no. 12,435,250, issued on Oct. 7, was assigned to Johns Manville (Denver).

"Double pass process of making a self adhering roofing membrane with improved adhesion at lower installation temperature" was invented by Jordan Kortmeyer (Parker, Colo.), Diego Pedrazzoli (Littleton, Colo.), Daniel Blasini (Lakewood, Colo.) and Bradley Crume (Lakewood, Colo.).

According to the abstract* released by the U.S. Patent & Trademark Office: "A self-adhering roofing membrane may include a polymeric membrane. The roofing membrane may include a first adhesive layer disposed on a major surface of the polymeric membrane. The first adhesive layer may include one or both of a hot melt adhesive and a butyl rubber-b...