11
Water treatment equipment, namely, for nanofiltration, ultrafiltration, microfiltration, and reverse osmosis; flow restrictors for reverse osmosis water purification; membrane modules for removing dissolved and suspended materials from water and wastewater, and replacement cartridges and filters therefor
17
Filter materials, namely, plastic, foam, or ceramic materials for use in manufacture of filters, filter modules and filter membranes, in particular for nanofiltration, ultrafiltration, microfiltration, and reverse osmosis; separation and filtration membranes, namely, plastics or ceramics in the nature of filtering materials for nanofiltration, ultrafiltration, microfiltration, and reverse osmosis; polymeric or ceramic membranes for nanofiltration, ultrafiltration, microfiltration, and reverse osmosis; natural or synthetic polymeric or ceramic membranes and filtering materials in sheet or roll form for use in manufacture of filtration media; polymeric or ceramic sheets for use in manufacturing filtration media; porous membranes in sheet form for use in manufacturing filtration media