Microporous filter media, filtration systems containing same, and methods of making and using

  • US 6,835,311 B2
  • Filed: 11/01/2002
  • Issued: 12/28/2004
  • Est. Priority Date: 01/31/2002
  • Status: Active Grant
First Claim
Patent Images

1. A filter medium comprising:

  • a microporous structure having a mean flow path of less than or equal to about 1 micron; and

    a microbiological interception enhancing agent comprising a cationic metal complex comprising a cationic material adsorbed on at least a portion of said microporous structure, having an associated counter ion therewith, capable of imparting a positive charge on at least a portion of said microporous structure, and wherein a biologically active metal is caused to precipitate with at least a portion of the counter ion associated with the cationic material.

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