ALEXANDRIA, Va., July 3 -- United States Patent no. 12,343,942, issued on July 1, was assigned to HOLCIM TECHNOLOGY LTD (Zug, Switzerland).

"Process for joining overlapping thermoplastic membrane components" was invented by Mitchell L. Gilbert (Hemlock, Mich.) and Crint A. LaBrosse (Bay City, Mich.).

According to the abstract* released by the U.S. Patent & Trademark Office: "A method of joining overlapping thermoplastic membrane components in which a first thermoplastic membrane component and a second thermoplastic membrane component are positioned in overlapping relationship between a pair of complementary molding surfaces, with at least one of the complementary molding surfaces being defined by an electrically conductive metal susceptor...