Multi-layer filter

Details Multi-layer filter Multi-layer filter

1983-08-08

1984-11-20

Cintins, Ivars

Liquid purification or separation

Filter

Supported, shaped or superimposed formed mediums

2105002, 210501, 210504, 210506, B01D 2508

Patent

active

044837712

ABSTRACT:
A multi-layer filter combination having a macrofilter layer with a predetermined thickness and two major sides including porous material impregnable with bacteria-destroying medication and having pore sizes in the range from about 1 micron to about 120 microns. There is also a microfilter layer having a prearranged thickness smaller than the thickness of the macrofilter and including a porous membrane having pore sizes from about 0.1 micron to about 10 microns. The microfilter layer is mechanically bonded to at least a major side of the macrofilter layer, whereby inhibiting transfer of any remaining live bacteria which may have survived exposure to the bacteria-destroying medication, and which may attempt to pass outwardly beyond the microfilter layer. The medication is either an antibiotic and an iodophore.

REFERENCES:
patent: 3327859 (1967-06-01), Pall
patent: 3544457 (1970-12-01), Tulley et al.
patent: 3996141 (1976-12-01), Updike
patent: 4032457 (1977-06-01), Matchett
Catalog, Gelman Sciences, Inc., Medical Div., 4/81, PB400A.
Filtration Catalog--Nuclepore Corp., No. 50, p. 17.
Catalog No. 82, Micro Filtration Systems, p. 24.

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