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US Patent 7364653 Filtration systems and methods

Patent 7364653 was granted and assigned to Pall (funeral) on April, 2008 by the United States Patent and Trademark Office.

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Patent attributes

Current Assignee
Pall (funeral)
Pall (funeral)
Patent Jurisdiction
United States Patent and Trademark Office
United States Patent and Trademark Office
Patent Number
7364653
Date of Patent
April 29, 2008
Patent Application Number
09787944
Date Filed
August 31, 1999
Patent Primary Examiner
‌
Ana Fortuna
Patent abstract

A filtration system comprising a plurality of filters (14, 16, 18, 20). Each filter (14, 16, 18, 20) defines a respective filter flowpath extending adjacent a respective filtration medium (24) for tangential filtration by the filtration medium (24) of fluid passing through the filter flowpath. The system also comprises a manifold (32) connected to each filter (14, 16, 18, 20), the system being selectively operable in a first state in which the manifold (32) and the filter flowpaths form part of a first continuous flowpath (92, 36, 38, 40, 42, 44, 101, 56, 48, 50, 52, 54, 58, 88) around which fluid circulates passing in parallel through the filter flowpaths and a second state in which fluid circulates around a second continuous flowpath (94, 82, 86, 98, 101, 48, 58) including the filter flowpath of at least one (14) but not all of the filters, the second continuous flowpath having a lower volume than the first continuous flowpath and fluid passing into the second continuous flowpath from the manifold (32) responsive to tangential filtration in the second state.

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