Liquid purification or separation – Processes – Ion exchange or selective sorption
Reexamination Certificate
2007-08-29
2008-08-19
Barry, Chester T (Department: 1797)
Liquid purification or separation
Processes
Ion exchange or selective sorption
C210S683000, C210S688000, C210S694000, C210S266000, C210S282000, C210S283000, C210S284000, C210S242400, C210S290000
Reexamination Certificate
active
07413663
ABSTRACT:
A water treatment apparatus includes a housing comprising multiple housing portions and a plurality of treatment sections disposed within the housing, each treatment section comprising at least one distinct particulate layer. The apparatus is designed so that no water pressure need be applied to force the water through the apparatus, as gravity pulls the water down through the filtering layers. Water may also be force fed through the treatment apparatus; when the water is force fed, the housing portions need not be vertically stacked, but may be configured in any suitable arrangement. The treatment sections are distributed through the various housing portions in logical groups to perform various kinds of filtering. The housing portions are detachable and sealably stackable in multiple configurations, thus passing water through more or fewer treatment layers, depending on the quality of the incoming water.
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Rajan Mathu G.
Rajan Rajan G.
Barry Chester T
Nixon & Peabody LLP
Zero Technologies, Inc.
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