7 micro-filtration membranes, ultra-filtration membranes, reversed osmosis membranes, gas separation membranes, all for use in machines
9 micro-filtration membranes, ultra-filtration membranes, gas separation membranes, all for use in laboratories
11 apparatus for the separation of or filtration or water and other liquids and gases, including micro-filtration membranes, ultra-filtration membranes and gas separation membranes
42 advises in the field of the above-mentioned membranes and membrane filtration in general as well as applications thereof