ALEXANDRIA, Va., Nov. 11 -- United States Patent no. 12,467,649, issued on Nov. 11, was assigned to Tennessee Innovative Products LLC (Adamsville, Tenn.).

"Scalable ozone generator methods for retrofit of ducted HVAC systems" was invented by Robert W. Smith (Adamsville, Tenn.).

According to the abstract* released by the U.S. Patent & Trademark Office: "An HVAC duct ozone generator includes at least two ozone generation plate stacks, where each plate stack includes at least two independently electrically addressable plate groupings, where a primary plate grouping includes fewer ozone generation plates than a secondary plate grouping. Thus, the generator includes at least four independent ozone generation control channels to energize the pr...