GRANVILLE, N.Y. — Millennium Slate LLC has been issued United States Patent 10,829,937 B2 "Roofing System and Method." This patent, and other patents and trademarks pending, covers Millennium's unique hook and loop adhered slate roofing system.

Millennium President Phil. C Prehoda is one of the inventors, along with colleagues Fred Whitridge and Tom Collard, president of Millennium's parent company Evergreen Slate Co. Inc.