Patent ID: 7594959

Claim:
A filter assembly comprising: a housing having an inlet and an outlet for flow of a gas from the inlet to the outlet, one or more conducting filters positioned in said housing between said inlet and outlet in the path of said gas flow, each said conducting filter comprising a conductive doped polymer material that is a synthetic metal, said conductive doped polymer material having a conductivity greater than 10 S/cm, wherein each said conducting filter is electrically conducting and adapted to receive an electrical charge and to remove the particles present in the gas, each said conducting filter is mounted on a frame insulating material attached to the housing, one or more ion emitters, each said ion emitter being paired with one of said conducting filters and being positioned in the housing upstream between said inlet and said conducting filter, each said ion emitter adapted to transfer electrical charge to said particles in said gas, and one or store voltage sources, each voltage source connected to one said pair of said ion emitters and conducting filters, each voltage source having a first pole connected to said ion emitter and a second pole connected to said conducting filter.