ALEXANDRIA, Va., Aug. 26 -- United States Patent no. 12,397,255, issued on Aug. 26, was assigned to PMK PRODUCTS LLC (North Haven, Conn.).
"Air filtration system" was invented by Michael Katzmark (Bethany, Conn.).
According to the abstract* released by the U.S. Patent & Trademark Office: "An air filtration system comprising an extrusion frame with an associated grille proximal to an occupied space, the frame dimension for insertion within a drop ceiling or solid ceiling associated with either a plenum air space or directly to a return air duct associated with an air handler and conditioned supply air, a pleated filter positioned adjacent the grille so as to filter air flowing into the plenum air space from the occupied space, the pleated ...