Plastic filter units having a weld cellulose filter

Liquid purification or separation – Casing divided by membrane into sections having inlet – Each section having inlet

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Details

210455, 210474, 21050029, 55158, B01D 1300

Patent

active

047028343

ABSTRACT:
A plastic filterware having a filter membrane consisting essentially of cellulose nitrate welded to a surface of a membrane support member.
The weld can be substantially in the shape of a ring having a width of about 2.29 millimeters. The filterware can include an upper receiving chamber for receiving liquid to be filtered, a support member at the lower end of the receiving chamber and a lower receptacle below the support member of receiving filtrate.

REFERENCES:
patent: 3295686 (1967-01-01), Krueger
patent: 3386585 (1968-06-01), Weyand et al.
patent: 3722697 (1973-03-01), Burke et al.
patent: 3730353 (1973-05-01), Trasen et al.
patent: 3954625 (1976-05-01), Michalski
patent: 4062781 (1977-12-01), Strauss et al.
patent: 4191654 (1980-03-01), Larson
patent: 4229306 (1980-10-01), Hein et al.
patent: 4341538 (1982-07-01), Vadnay et al.
patent: 4357240 (1982-11-01), Mehra et al.
patent: 4419166 (1983-12-01), Larson
patent: 4564452 (1986-01-01), Sharpe
patent: 4597868 (1986-07-01), Watanabe
Millipore Catalogue and Purchase Guide, Millipore Corporation, Bedford, Mass., Sep. 1985, p. 15.

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