IP Library › Granted Patent US 7,955,997
Granted Patent B2
US 7,955,997 · App. 10/528,005 · Granted Jun 7, 2011

Electrostatically charged filter media incorporating an active agent

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Quick Facts
Patent No.
US 7,955,997
App. No.
10/528,005
Granted
Jun 7, 2011
Kind
B2
Abstract

There is provided a protective media and a method of manufacturing the same. In one aspect, the protective media includes a porous dielectric carrier, an active agent incorporated in the porous dielectric carrier, and an electrostatic charge across at least a portion of the porous dielectric carrier. This innovative media is capable of eradicating microorganisms and/or toxins more efficiently than prior art solutions and can also self sterilize.

Claims (26)

1. A protective media for filtering and killing microorganisms in air, said protective media comprising:

a porous dielectric carrier;

a biocidal active agent incorporated in or on said porous dielectric carrier, said active agent being an iodinated resin; and

an electrostatic charge across at least a portion of said porous dielectric carrier, wherein said porous dielectric carrier is a non-woven material, and wherein said porous dielectric carrier is capable of holding an electrostatic charge in the presence of said biocidal active agent.

2. The protective media of claim 1 in which said porous dielectric carrier is a fiber based material having a fibrous matrix structure.

3. The protective media of claim 1 in which said porous dielectric carrier is a sponge like material have an open cell matrix structure, wherein the open cell matrix structure is a foam.

4. The protective media of claim 1 in which said non-woven material is a three dimensional structure configured to provide a matrix capable of physically entrapping said active agent.

5. The protective media of claim 4 in which said active agent is configured to be physically entrapped in said matrix.

6. The protective media of claim 1 in which said porous dielectric carrier comprises polymer fiber.

7. The protective media of claim 6 in which said polymer fiber comprises polypropylene.

8. The protective media of claim 6 in which said polymer fiber comprises a member selected from the group consisting of nylon, polyethylene, and polyester.

9. The protective media of claim 1 in which said porous dielectric carrier is capable of holding an electrostatic charge in the presence of said biocidal active agent for at least six months.

10. A protective media for filtering and killing microorganisms in air, said protective media comprising:

a first porous dielectric carrier;

a first active agent incorporated in said first porous dielectric carrier, said first active agent being a biocidal iodinated resin;

an electrostatic charge across at least a portion of said first porous dielectric carrier;

a second porous dielectric carrier;

a second active agent incorporated in said second porous dielectric carrier; and

an electrostatic charge across at least a portion of said second porous dielectric carrier, wherein each of said first porous dielectric carrier and said second porous dielectric carrier is a non-woven material, and wherein said first porous dielectric carrier is capable of holding an electrostatic charge in the presence of said biocidal iodinated resin.

11. The protective media of claim 10 in which said first active agent and said second active agent are of the same material.

12. The protective media of claim 10 in which an air gap separates said first and said second porous dielectric carriers.

13. The protective media of claim 12 in which said porous dielectric carrier is a fiber based material having a fibrous matrix structure.

14. The protective media of claim 13 in which said non-woven material is a three dimensional structure configured to provide a matrix capable of physically entrapping said active agent.

15. The protective media of claim 14 in which said active agent consists of particles configured to be physically entrapped in said matrix.

16. The protective media of claim 12 in which said porous dielectric carrier is a sponge like material have an open cell matrix structure.

17. The protective media of claim 10 in which said first porous dielectric carrier is capable of holding an electrostatic charge in the presence of said biocidal iodinated resin for at least six months.