ALEXANDRIA, Va., Sept. 17 -- United States Patent no. 12,416,421, issued on Sept. 16, was assigned to BISSELL Inc. (Grand Rapids, Mich.).
"Air purifier with light-deflecting structure" was invented by Derek Smith (Grand Rapids, Mich.), Morgan Tolles (Hastings, Mich.) and Tyler Grab (Grand Rapids, Mich.).
According to the abstract* released by the U.S. Patent & Trademark Office: "An air purifier includes an interior volume divided into upper and lower chambers, with a motorized fan assembly being positioned within the upper chamber. An ultraviolet (UV) light source is positioned within the lower chamber. A lower fan shroud includes concentric annular ribs that extend axially into the lower chamber and terminate in respective flared distal ...