# US 2006/0251879 A1 · Electrostatically charged filter media incorporating an active agent > Agents: this data is available as JSON from the patentgrep API and MCP server — see https://patentgrep.com/llms.txt - Number: US 2006/0251879 A1 - Document ID: US20060251879A1 - Status: Published application - Kind: A1 - Application number: 10/528,005 - Filed: 2003-09-08 - Published: 2006-11-09 - Earliest claimed: 2002-09-16 - Assignees: Triosyn Corp. - Inventors: Pierre Messier - Web page: https://patentgrep.com/patent/US20060251879A1 ## CPC - A41D 13/1192: {with antimicrobial agent} - A61L 9/16: using physical phenomena - B01D 39/1623: {of synthetic origin} - B01D 39/18: the material being cellulose or derivatives thereof ({cork or peat B01D39/1646} ; making filter paper D21F11/14) - B01D 39/2017: {the material being filamentary or fibrous} - B01D 39/2031: {the material being particulate} - B01D 39/2072: {the material being particulate or granular} - B03C 3/28: Plant or installations without electricity supply, e.g. using electrets - B03C 3/60: Use of special materials other than liquids - D01D 5/0985: {by means of a flowing gas (e.g. melt-blowing)} - D06M 10/025: {Corona discharge or low temperature plasma} - D06M 11/155: Halides of elements of Groups 2 or 12 of the Periodic Table - D06M 11/38: Oxides or hydroxides of elements of Groups 1 or 11 of the Periodic Table - D06M 11/76: with carbon oxides or carbonates (D06M11/75 takes precedence; with percarbonic acids or their salts D06M11/50; with urea D06M13/432) - D06M 11/83: with metals; with metal-generating compounds, e.g. metal carbonyls; Reduction of metal compounds on textiles - D06M 13/355: having six-membered heterocyclic rings - D06M 16/00: Biochemical treatment of fibres, threads, yarns, fabrics, or fibrous goods made from such materials, e.g. enzymatic - A62B 23/025: {the filter having substantially the shape of a mask (surgical face masks A41D13/11)} - B01D 2239/0407: comprising particulate additives, e.g. adsorbents - B01D 2239/0435: Electret - B01D 2239/0442: Antimicrobial, antibacterial, antifungal additives - B01D 2239/0492: on fibres - Y10T 428/249953: Composite having voids in a component [e.g., porous, cellular, etc.] - Y10T 442/60: Nonwoven fabric [i.e., nonwoven strand or fiber material] - Y10T 442/696: Including strand or fiber material which is stated to have specific attributes [e.g., heat or fire resistance, chemical or solvent resistance, high absorption for aqueous compositions, water solubility, heat shrinkability, etc.] - Y10T 442/699: Including particulate material other than strand or fiber material - A41D: OUTERWEAR; PROTECTIVE GARMENTS; ACCESSORIES - A61L: METHODS OR APPARATUS FOR STERILISING MATERIALS OR OBJECTS IN GENERAL; DISINFECTION, STERILISATION OR DEODORISATION OF AIR; CHEMICAL ASPECTS OF BANDAGES, DRESSINGS, ABSORBENT PADS OR SURGICAL ARTICLES; MATERIALS FOR BANDAGES, DRESSINGS, ABSORBENT PADS OR SURGICAL ARTICLES (preservation of bodies or disinfecting characterised by the agents employed A01N; preserving, e.g. sterilising, food or foodstuffs A23; preparations for medical, dental or toiletry purposes A61K) - B01D: SEPARATION (separating solids from solids by wet methods B03B, B03D; by pneumatic jigs or tables B03B; by other dry methods B07; magnetic or electrostatic separation of solid materials from solid materials or fluids, separation by high-voltage electric fields B03C; centrifuges, vortex apparatus B04; presses per se for squeezing-out liquid from liquid-containing material B30B9/02; treatment of water C02F, e.g. softening by ion-exchange C02F1/42; {arrangements of air intake cleaners in gas turbine plants F02C7/05} ; arrangements or mounting of filters in air-conditioning, air-humidification or ventilation F24F13/28) - B03C: MAGNETIC OR ELECTROSTATIC SEPARATION OF SOLID MATERIALS FROM SOLID MATERIALS OR FLUIDS; SEPARATION BY HIGH-VOLTAGE ELECTRIC FIELDS (separating isotopes B01D59/00; combinations of magnetic or electrostatic separation with separation of solids by other means B03B, B07B) - D01D: MECHANICAL METHODS OR APPARATUS IN THE MANUFACTURE OF ARTIFICIAL FILAMENTS, THREADS, FIBRES, BRISTLES OR RIBBONS - D06M: TREATMENT, NOT PROVIDED FOR ELSEWHERE IN CLASS D06, OF FIBRES, THREADS, YARNS, FABRICS, FEATHERS OR FIBROUS GOODS MADE FROM SUCH MATERIALS - A62B: DEVICES, APPARATUS OR METHODS FOR LIFE-SAVING (valves specially adapted for medical use A61M39/00; life-saving devices, apparatus or methods specially adapted for use in water B63C9/00; divers' equipment B63C11/00; specially adopted for use with aircraft, e.g. parachutes, ejector seats, {B64D17/00, B64D25/10}; rescue devices peculiar to mining E21F11/00) - Y10T: TECHNICAL SUBJECTS COVERED BY FORMER US CLASSIFICATION ## 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 ### Claim 1 A protective media including: a porous dielectric carrier; an active agent incorporated in said porous dielectric carrier; and an electrostatic charge across at least a portion of said porous dielectric carrier. ### Claim 2 (depends on 1) The protective media of claim 1 in which said porous dielectric carrier is a non-woven material. ### Claim 3 (depends on 1) The protective media of claim 1 in which said porous dielectric carrier is a fiber based material having a fibrous matrix structure. ### Claim 4 (depends on 1) The protective media of claim 1 in which said porous dielectric carrier is a sponge like material have an open cell matrix structure. ### Claim 5 (depends on 2) The protective media of claim 2 in which said non-woven material is a three dimensional structure configured to provide a matrix capable of physically entrapping said active agent. ### Claim 6 (depends on 5) The protective media of claim 5 in which said active agent consists of particles of a size suitable for entrapment by said matrix. ### Claim 7 (depends on 1) The protective media of claim 1 in which said active agent is chosen from the group consisting of antimicrobials and antitoxins. ### Claim 8 (depends on 7) The protective media of claim 7 in which said porous dielectric carrier is a non-woven material. ### Claim 9 (depends on 7) The protective media of claim 7 in which said porous dielectric carrier is a fiber based material having a fibrous matrix structure. ### Claim 10 (depends on 7) The protective media of claim 7 in which said porous dielectric carrier is a sponge like material have an open cell matrix structure. ### Claim 11 (depends on 8) The protective media of claim 8 in which said non-woven material is a three dimensional structure configured to provide a matrix capable of physically entrapping said active agent. ### Claim 12 (depends on 11) The protective media of claim 11 in which said active agent consists of particles of a size suitable for entrapment by said matrix. ### Claim 13 (depends on 1) The protective media of claim 1 in which said active agent is chosen from the group consisting of metals and chemical compounds. ### Claim 14 (depends on 13) The protective media of claim 13 in which said porous dielectric carrier is a non-woven material. ### Claim 15 (depends on 13) The protective media of claim 13 in which said porous dielectric carrier is a fiber based material having a fibrous matrix structure. ### Claim 16 (depends on 13) The protective media of claim 13 in which said porous dielectric carrier is a sponge like material have an open cell matrix structure. ### Claim 17 (depends on 14) The protective media of claim 14 in which said non-woven material is a three dimensional structure configured to provide a matrix capable of physically entrapping said active agent. ### Claim 18 (depends on 17) The protective media of claim 17 in which said active agent consists of particles of a size suitable for entrapment by said matrix. ### Claim 19 (depends on 1) The protective media of claim 1 in which said active agent is an iodinated resin. ### Claim 20 (depends on 19) The protective media of claim 19 in which said porous dielectric carrier is a non-woven material. ### Claim 21 (depends on 19) The protective media of claim 19 in which said porous dielectric carrier is a fiber based material having a fibrous matrix structure. ### Claim 22 (depends on 19) The protective media of claim 19 in which said porous dielectric carrier is a sponge like material have an open cell matrix structure. ### Claim 23 (depends on 20) The protective media of claim 20 in which said non-woven material is a three dimensional structure configured to provide a matrix capable of physically entrapping said active agent. ### Claim 24 (depends on 23) The protective media of claim 23 in which said active agent consists of particles of a size suitable for entrapment by said matrix. ### Claim 25 A protective media including: a first porous dielectric carrier; a first active agent incorporated in said first porous dielectric carrier; 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. ### Claim 26 (depends on 25) The protective media of claim 25 in which said first active agent and said second active agent are of the same material. ### Claim 27 (depends on 25) The protective media of claim 25 in which an air gap separates said first and said second porous dielectric carriers. ### Claim 28 (depends on 27) The protective media of claim 27 in which said porous dielectric carrier is a non-woven material. ### Claim 29 (depends on 27) The protective media of claim 27 in which said porous dielectric carrier is a fiber based material having a fibrous matrix structure. ### Claim 30 (depends on 27) The protective media of claim 27 in which said porous dielectric carrier is a sponge like material have an open cell matrix structure. ### Claim 31 (depends on 29) The protective media of claim 29 in which said non-woven material is a three dimensional structure configured to provide a matrix capable of physically entrapping said active agent. ### Claim 32 (depends on 31) The protective media of claim 31 in which said active agent consists of particles of a size suitable for entrapment by said matrix. ### Claim 33 A method of making a non-woven material including: providing an extruder having an outlet; providing a collecting web below the outlet of said extruder; providing a hot melt of extrudable material; extruding said extrudable material with said extruder to provide a flow of cooling extruded fibers to fall toward said collecting web; and providing a cloud of an active agent at a location adjacent said outlet of said extruder so that said cloud envelops the cooling fibers while said fibers are still in a quasi-liquid quasi-solid state so that said active agent settles and collects and is intermeshed or entrapped with said fibers on the collecting web forming a media. ### Claim 34 (depends on 33) The method of making a non-woven material as defined in claim 33 also including forming said media into a mesh. ### Claim 35 (depends on 33) The method of making a non-woven material as defined in claim 33 in which said cloud is in a physical state selected from the group consisting of a vapor, a fine dry dust, an atomized particulate and an aerosolized particulate. ### Claim 36 (depends on 34) The method of making a non-woven material as defined in claim 34 also including the step of applying an electric charge across said mesh. ### Claim 37 A method of making a non-woven material including; providing an extruder having an outlet; providing a collecting web below the outlet of said extruder; providing a reservoir of extrudable material; extruding said extrudable material with said extruder to provide a flow of extruded fibers to fall toward said collecting web; and providing a cloud of an active agent at a location adjacent said flow of extruded fibers so that said cloud envelops the fibers while said fibers are falling so that said active agent settles and collects and is intermeshed or entrapped with said fibers on the collecting web forming a media. ### Claim 38 (depends on 37) The method of making a non-woven material as defined in claim 37 also including forming said media into a mesh. ### Claim 39 (depends on 37) The method of making a non-woven material as defined in claim 37 in which said cloud is in a physical state selected from the group consisting of a vapor, a fine dry dust, an atomized particulate and an aerosolized particulate. ### Claim 40 (depends on 38) The method of making a non-woven material as defined in claim 38 also including the step of applying an electric charge across said mesh.