Organic ion-selective membranes

Organic microfibrilated material for filter

Organic oxycompound dehydration

Organic pollutant removal system and method

Organic recovery system and method

Organic-inorganic membranes

Organo silicon/silica defoamer compositions

Organo-metal materials

Organosilicon compounds

Orifice element with integrated filter, slow return valve,...

Orifice filter and method for making a filter assembly

Orifice scrubber for removing solid particles from high...

Oscillating shower for disc filter

Osmosis process

Osmotic concentration by membrane

Osmotic distillation process

Osmotic drug delivery devices with hydrophobic wall materials

Outlet means for vapor liquid contacting tray

Outside drive for a tilting pan filter

Overload protector for sewage treatment device