Liquid purification or separation – Particulate material type separator – e.g. – ion exchange or... – With spaced non-particulate separating means
Reexamination Certificate
2008-07-08
2008-07-08
Savage, Matthew O (Department: 1797)
Liquid purification or separation
Particulate material type separator, e.g., ion exchange or...
With spaced non-particulate separating means
C210S282000, C210S317000, C210S464000, C210S484000, C210S489000, C210S502100, C210S506000, C210S510100
Reexamination Certificate
active
11277004
ABSTRACT:
A filter cartridge for use in gravity-fed water treatment systems wherein filter elements include a dome-shaped hydrophilic porous particulate carbon powder block filter in a polymeric binder. The filter has a closed upper end and an open lower end with sidewalls extending there between, additional filter media and includes ion exchange resins and a fine mesh hydrophilic filter sheet to reduce contaminant content of water for drinking purposes.
REFERENCES:
patent: 5024764 (1991-06-01), Holler
patent: 6004460 (1999-12-01), Palmer et al.
patent: 6524477 (2003-02-01), Hughes
patent: 2002035740 (2002-02-01), None
Derwent Abstract, accession No. 2005-622180 for Indian Patent Publication No. IN 200401421 14, published on Apr. 29, 2004.
Bommi Govind
Bommi Krishna Murthy
Filtrex Holdings PTE, Ltd.
Levenfeld Pearlstein LLC
Savage Matthew O
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