Means to miniaturize diffusion filters for particulate removal

Details Means to miniaturize diffusion filters for particulate removal Means to miniaturize diffusion filters for particulate removal

2007-07-10

2007-07-10

Fortuna, Ana M. (Department: 1723)

Liquid purification or separation

Processes

Liquid/liquid solvent or colloidal extraction or diffusing...

C210S502100, C210S257200, C210S262000, C210S767000

Reexamination Certificate

active

10308695

ABSTRACT:
The present invention is directed to a filtration system including filter media that use diffusion as a method of particulate reduction that balances the contact time required for a desirable level of interception and filter performance. The filter system of the present invention includes a filter medium that removes particulate contaminants by diffusion, means for providing sufficient contact time for an influent to contact the filter medium such that the filter medium can intercept sub-micron particulates at an average flow rate below that of an on-demand or instantaneous flow rate; and a storage buffer for providing a filtered effluent at a rate independent of the average flow rate required to achieve adequate particulate reduction through the filter medium.

REFERENCES:
patent: 5221473 (1993-06-01), Burrows
patent: 5554288 (1996-09-01), Rydell et al.
patent: 6182453 (2001-02-01), Forsberg
patent: 6190558 (2001-02-01), Robbins
patent: 6630016 (2003-10-01), Koslow

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