US Patent Issued to CERTAINTEED on Oct. 6 for "Algaecidal roofing granules, roofing products including them, and methods for making them" (American, Italian Inventors)

ALEXANDRIA, Va., Oct. 6 -- United States Patent no. 12,753,607, issued on Oct. 6, was assigned to CERTAINTEED LLC (Malvern, Pa.).

"Algaecidal roofing granules, roofing products including them, and methods for making them" was invented by Xiaofeng Tang (Malvern, Pa.), Valerio Massara (Redavalle, Italy), Shuang Liu (West Chester, Pa.) and Mark Simon (Sutton, Mass.).

According to the abstract* released by the U.S. Patent & Trademark Office: "Provided are roofing granules, such as algaecidal roofing granules, methods for making them and their use in roofing products. In one aspect, the disclosure provides an algaecidal roofing granule that comprises an ion-exchanged zeolite disposed within the binder, wherein the ion-exchanged zeolite compris...