ALEXANDRIA, Va., April 7 -- United States Patent no. 12,594,527, issued on April 7, was assigned to A. O. Smith Corp. (Milwaukee).
"Method of making a cartridge filter" was invented by Yizhi Hou (Milwaukee).
According to the abstract* released by the U.S. Patent & Trademark Office: "A cartridge filter includes a feedwater inlet, a first outlet and a second outlet, a tube arranged at the center of the cartridge filter, an interior volume of the tube being in fluid communication with the first outlet, and a spiral wound filter assembly extending radially outward from the central tube and including a prefilter, a reverse osmosis filter, and a postfilter. The prefilter is located radially outward from the reverse osmosis filter and the postfi...