Patent ID: 7622041

Claim:
A method of making a filter device comprising the steps of forming a housing for enclosing at least two fluid filtration compartments, said housing, when assembled, comprising at least two longitudinally extending shell portions defining peripheral wall portions of said housing and having at least a first internal wall fixed to the housing and extending between opposite ends of said housing and being separate from said peripheral wall portions of said housing, one of said longitudinally extending shell portions of the housing describing in cross section less than one half of the perimeter of said housing, adjacent filtration compartments being separated from each other by said first internal wall, placing at least one filter membrane having a first surface and a second surface longitudinally in each filtration compartment; closing said shell portions around said filter membranes to form said fluid filtration compartments; sealing adjacent edges of said shell portions; imbedding ends of said filter membranes in a potting compound; and capping the ends of said housing.