Patent ID: 6998058
Filing Date: 2006-02-14
Classification: A61L,B01D,B01J,B82Y,C02F,C12H,Y10T

Abstract:
1. A method of removing microbiological contaminants in a fluid comprising the steps of: providing a filter medium having a microporous structure having a mean flow path of less than about 1 micron, the microporous structure having coated on at least a portion thereof a microbilogical interception enhancing agent comprising a cationic metal complex wherein said cationic material has a medium to high charge density and a molecular weight greater than about 5000 Daltons; wherein the microporous structure comprises a plurality of nanofibers, and said metal is a biological active metal; contacting the fluid to the filter medium for greater than about 3 seconds; and obtaining at least 6 log reduction of microbiological contaminants smaller than the mean flow path of the filter medium that pass through the filter medium.