ALEXANDRIA, Va., April 7 -- United States Patent no. 12,595,594, issued on April 7, was assigned to Aladdin Manufacturing Corp. (Calhoun, Ga.).

"Bulked continuous carpet filament manufacturing from polytrimethylene terephthalate" was invented by Thomas R. Clark (Hixson, Tenn.).

According to the abstract* released by the U.S. Patent & Trademark Office: "A method of manufacturing bulked continuous carpet filament from a plurality of polymer flakes comprises: (1) providing an extruder; (2) melting and purifying the plurality of polymer flakes into a polymer stream using the extruder; (3) providing a static mixing assembly downstream of the extruder; (4) adding a first liquid colorant to a center of the polymer stream at a first location befo...