Liquid purification or separation – With means to add treating material – Plural distinct separators
Reexamination Certificate
2006-10-23
2008-08-12
Savage, Matthew O (Department: 1797)
Liquid purification or separation
With means to add treating material
Plural distinct separators
C210S206000, C210S316000, C210S317000, C210S416500, C210S440000, C210S502100, C210SDIG013
Reexamination Certificate
active
07410572
ABSTRACT:
The present invention provides a filter apparatus for use in removing impurities and acids contained in a fluid that includes a particulate filter and an acid-neutralizing filter. Preferably, the particulate filter and the acid-neutralizing filter are positioned within a housing. A conduit having a pressure reduction section is arranged to create a pressure differential across the acid-neutralizing filter such that a portion of the fluid to be filtered by the filter apparatus passes through the acid-neutralizing filter.
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European Patent Office Search Report; Application No. 00204283.6-2113; date of search: Dec. 11, 2001.
Beard John H.
Roush Allan
Baldwin Filters, Inc.
D-A Lubricant Company, Inc.
Leydig , Voit & Mayer, Ltd.
Savage Matthew O
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