Plural stage filter cartridge wherein at least one stage compris

Details Plural stage filter cartridge wherein at least one stage compris Plural stage filter cartridge wherein at least one stage compris

1975-06-04

1977-06-28

Lutter, Frank W.

Liquid purification or separation

Filter

Supported, shaped or superimposed formed mediums

55316, 55487, 210492, 210497R, 210501, 210502, 210505, 210509, B01D 2504, B01D 2516

Patent

active

040324575

ABSTRACT:
A multiple phase filter cartridge is presented wherein the filter has two or more distinctly different fibrous layers with at least one of the fibrous layers containing active particles. The different layers are formed in place on the filter by a wet accretion process.

REFERENCES:
patent: 327646 (1885-10-01), Bingham
patent: 2539768 (1951-01-01), Anderson
patent: 2802405 (1957-08-01), Krogel
patent: 3158571 (1964-11-01), Supinger
patent: 3209916 (1965-10-01), May et al.
patent: 3261473 (1966-07-01), Riede
patent: 3384241 (1968-05-01), Nostrand
patent: 3434599 (1969-03-01), Wischmeyer et al.

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