1
Filtering compositions; filtering material (unprocessed plastics, chemical preparations, mineral substances, vegetable substances); carbon filter; activated carbon; cellulose for filtering purposes; filtering materials of ceramics, especially in particulate form
7
Oil filter; diesel filter; fuel filter; filters for cleaning cooling air (for engines); filters for gases (machines); anti-pollution devices for motors and engines; hydraulic oil filter; sifting machine; filters and filter cartridges for filtering machines; filters [parts of machines, motors, or engines]; vacuum Filters; filter housings as part of motors and machines
11
Air filters; electrostatic air filters; water Filters; water treatment filters; filters for swimming pools; filters for gases (household or industrial installations); filter cartridges for gas, air and liquid filtration installations and apparatus, in particular ready-made filter cartridges of non-woven fabrics therefor, being semi-finished materials; membranes for water filtering apparatus; membrane for reserve osmosis units; membranes for the filtration of water; reserve osmosis membrane filters for water treatment; filters and filters cartridges for milk, beverage and drinking water filtration installations and apparatus, in particular ready-made filter cartridges of non-woven fabrics therefor and non-woven fabrics therefor, being semi-finished materials; air conditioners for vehicles; filters [parts of household or industrial installations]; filters for air conditioning, ionization apparatus for the treatment of air; filters for drinking water; filters comprising glass fibers, especially microfibers made of glass; air conditioners for vehicles; air filtering installations; air purifying apparatus and machines; air cooling apparatus; gas scrubbing apparatus; water filtering apparatus; water purifying apparatus and machines; water purification installations; ventilation [air-conditioning] installations and apparatus; purification installations for sewage
16
Filtering materials of paper; filter laminates comprising paper
24
Textile filtering materials; Filter fibers (textile); textiles in the form of rolls, lengths, cut-out pieces and cuts (semi-finished), especially for filtering purposes; Non-woven fabrics in the form of rolls, lengths, cut-out pieces and cuts (semi-finished) for filtering applications; Filtering Cloth; filter mats comprising glass fibers, especially micro glass fibers