ALEXANDRIA, Va., July 15 -- United States Patent no. 12,661,825, issued on June 23, was assigned to SIKA TECHNOLOGY AG (Baar, Switzerland).

"Board derived from recycled waste material comprising polyvinylchloride" was invented by Brian J. Whelan (Canton, Mass.), Albert J. Duhamel (Tiverton, R.I.), Xiong Jiang (Canton, Mass.), Blaise W. Leeber (Burlington, Mass.) and Ajay Padwal (Sharon, Mass.).

According to the abstract* released by the U.S. Patent & Trademark Office: "A board for use in a construction related application, the board including: a) a core layer having first and second major surfaces and b) a first facing layer directly adjacent to the first major surface of the core layer, wherein the core layer includes recycled polyvinylc...