Class / Patent application number | Description | Number of patent applications / Date published |
095285000 | Coated or chemically treated filter | 23 |
20080223216 | Aqueous composition for filter media with enhanced wet burst strength - The invention relates to an aqueous composition including an aqueous silane functional polymer and a polyamide epichlorohydrin adduct. The aqueous silane functional polymer includes a reaction product of at least one first ethylenically unsaturated monomer that is free of oxysilane functional groups, and at least one second ethylenically unsaturated monomer that includes an oxysilane functional group. The aqueous composition is useful for treating cellulosic materials for filter media. | 09-18-2008 |
20080257153 | Patterned Porous Venting Materials - A patterned gas permeable venting material is affixed within a venting apparatus which has an opening. The venting material forms a liquid tight, gas permeable seal of the opening. The patterned material comprises a PTFE membrane of porosity less than 80% and with a surface indentation of depth greater than 12 microns. | 10-23-2008 |
20080276804 | Functionalized Adsorbent for Removal of Acid Gases and Use Thereof - The present invention provides a functionalized adsorbent for removal of acid gases, which comprises a pore-expanded mesoporous support having a pore volume of between 0.7 and 3.6 cc/g, a median pore diameter of between 1 and 25 nm, and a BET surface area of between 500 and 1600 m | 11-13-2008 |
20080295691 | UV CROSS-LINKED POLYMER FUNCTIONALIZED MOLECULAR SIEVE/POLYMER MIXED MATRIX MEMBRANES - The present invention discloses methods of separating gases using high performance UV cross-linked polymer functionalized molecular sieve/polymer mixed matrix membranes (MMMs) with either no macrovoids or voids of less than several angstroms at the interface of the polymer matrix and the molecular sieves. These UV cross-linked MMMs were prepared by incorporating polyethersulfone (PES) functionalized molecular sieves such as AIPO-14 and UZM-25 small pore microporous molecular sieves into a continuous UV cross-linkable polyimide polymer matrix followed by UV cross-linking. The UV cross-linked MMMs in the form of symmetric dense film, asymmetric flat sheet membrane, or asymmetric hollow fiber membranes have good flexibility, high mechanical strength, and exhibit significantly enhanced selectivity and permeability over polymer membranes made from corresponding continuous polyimide polymer matrices for carbon dioxide/methane and hydrogen/methane separations. The MMMs of the present invention are suitable for a variety of liquid, gas, and vapor separations. | 12-04-2008 |
20080295692 | UV CROSS-LINKED POLYMER FUNCTIONALIZED MOLECULAR SIEVE/POLYMER MIXED MATRIX MEMBRANES FOR SULFUR REDUCTION - The present invention discloses high performance UV cross-linked polymer functionalized molecular sieve/polymer mixed matrix membranes (MMMs), the method of making these membranes, and the use of such membranes for separations. These UV cross-linked MMMs were prepared by incorporating polyethersulfone functionalized molecular sieves such as AlPO-14 and UZM-25 into a continuous UV cross-linkable polymer matrix followed by UV cross-linking. The UV cross-linked MMMs in the form of symmetric dense film, asymmetric flat sheet membrane, or asymmetric hollow fiber membranes described in the current invention have good flexibility and high mechanical strength, and exhibit significantly enhanced selectivity and permeability over the polymer membranes made from the corresponding continuous polyimide polymer matrices for carbon dioxide/methane (CO | 12-04-2008 |
20090049988 | COMPOSITE MATERIAL - There is described a composite material such as venting materials and vents containing said venting materials. The vents are air- or more generally gas-permeable venting composites that are oleophobic and liquid repellent. | 02-26-2009 |
20090101015 | Filtration Media for the Removal of Mercury From Flue Gas Emissions - Filtration materials comprising heat-treated metal-doped precipitated silica or silica gel materials with sulfur-containing functional silane surface treatments are provided. Such materials exhibit excellent mercury removal properties from flue gas emissions through the trapping of mercury vapors within a smokestack (or other like site). The metal dopant and the sulfur-containing functional silane components applied to the surface of the target metal-doped gels effectuate the desired mercury reactions to permit capture thereof. In combination, such components permit versatile utilization in either a fixed bed configuration or through a dynamic mercury removal procedure. Methods of using and specific filter apparatuses are also encompassed within this invention. | 04-23-2009 |
20090188389 | Particulate filter for an exhaust aftertreatment system of a machine and filtering method thereof - A particulate filter includes a filter element comprising a non-perforated tube having an exhaust inlet at a first end and an exhaust outlet at a second end. A fibrous metallic filter medium is disposed within the filter element and is configured to trap particulate matter from an exhaust gas. A first metallic foam disk is attached at the second end of the filter element, and retains the fibrous metallic filter medium within the filter element. A second metallic foam disk may be attached at the first end of the filter element and may allow the particulate filter to be reversed with respect to an exhaust gas flow. | 07-30-2009 |
20090272269 | Method and apparatus for electric treatment of substrates - Methods and apparatus for hydrodischarging and hydrocharging substrates and articles to produce enhanced ability to avoid attraction of contaminants or improved capability of removing contaminants from fluids are disclosed. In another form the method involves removal of electric charges or neutralization of charge on or within substrates. Also disclosed are methods of making using electret substrates and articles for removing particulates and mists from fluid streams. | 11-05-2009 |
20100095846 | TACKY ALLERGEN TRAP AND FILTER MEDIUM, AND METHOD FOR CONTAINING ALLERGENS - An allergen trap is provided. The allergen trap includes a woven or nonwoven substrate having at least one strata. The trap is impregnated with or otherwise treated with a tacky adhesive by which allergens may be trapped. An example of an allergen is a dust mite. The tacky adhesive, in turn, may be treated with a miticide or activated carbon. | 04-22-2010 |
20100251893 | HVAC Register Filter and Method of Using the Same - A filter is used in combination with a register for an HVAC system, where the register is mounted to a wall, floor, or ceiling. The type of register used in this invention has a plurality of parallel blades which are located on the exterior side of the register and a plurality of vane members set behind the parallel blades, where a space is defined between the parallel blades and the plurality of vane members. The filter has a pliable rectangular frame and a pliable filter material spanning across the pliable rectangular frame. The pliable rectangular frame and pliable filter material allow the filter to be inserted between the blades for placement in the space without removing the register from the wall, floor or ceiling. | 10-07-2010 |
20100275780 | Electrospray Neutralization Process and Apparatus for Generation of Nan-Aerosol and Nano-Structured Materials - The claimed invention describes methods and apparatuses for manufacturing nano-aerosols and nano-structured materials based on the neutralization of charged electrosprayed products with oppositely charged electrosprayed products. Electrosprayed products include molecular ions, nano-clusters and nano-fibers. Nano-aerosols can be generated when neutralization occurs in the gas phase. Neutralization of electrospan nano-fibers with molecular ions and charged nano-clusters may result in the formation of fibrous aerosols or free nano-mats. Nano-mats can also be produced on a suitable substrate, forming efficient nano-filters. | 11-04-2010 |
20100282083 | Disinfecting air filter - Disclosed is an air purification filter with novel active media that attracts, migrates, binds, and destroys pathogens, including sub-micron pathogens, that are suspended in the air passing through the filter. These properties are incorporated in the micro-fibers comprising the active filter media by several novel methods. One embodiment uses polymers or solgel bound monomers of quaternary ammonium compounds as a biocide with both chemotactic and pathogen membrane lysing properties. Another embodiment uses biocide chemicals blended into the melt before filter fibers are extruded and electret dipole charged. The attracting-binding properties of the embodiments may be enhanced by including electropositive Boehmite nano-fiber strands in the active media, by coating a reversible voltage charged electro-conductive polymer, by the use of supplemental fusing and lysing chemicals, and by optional ion field charging of incoming pathogens. | 11-11-2010 |
20110139006 | Vehicle Air Filter Fragrancing Device - A fragrancing device for a vehicle air filter is provided that includes a body formed of a material and incorporating a fragrance in the material forming the body, the body having a configuration adapted to align with a structure of a filter material in a vehicle air filter, and at least one attachment clip releasably engaged with the body the filter material of the filter to attach the body to the filter material. | 06-16-2011 |
20120097033 | FILTER FOR FILTERING PARTICULATE MATTER FROM EXHAUST GAS EMITTED FROM A COMPRESSION IGNITION ENGINE - A filter for filtering particulate matter (PM) from exhaust gas emitted from a compression ignition engine, which filter comprising a porous substrate having inlet surfaces and outlet surfaces, wherein the inlet surfaces are separated from the outlet surfaces by a porous structure containing pores of a first mean pore size, wherein the porous substrate is coated with a wash coat comprising a plurality of solid particles comprising a molecular sieve promoted with at least one metal wherein the porous structure of the wash coated porous substrate contains pores of a second mean pore size, and wherein the second mean pore size is less than the first mean pore size. | 04-26-2012 |
20120111198 | Straight pore microfilter with efficient regeneration - A gas particulate filter well-suited for, but not limited to, removing airborne particulates from air. According to one embodiment, the filter is a composite structure including a porous support and an ionomer coating. The porous support is preferably made of a material designed to endow the filter with good mechanical properties. The pores of the porous support are preferably micron or smaller straight pores. The ionomer coating, which is applied to the porous support but does not completely seal the pores of the porous support, is preferably selected to provide the filter with good filtering properties and regeneration through controlled ionomer hydration/dehydration and corresponding ionomer swelling and contraction. | 05-10-2012 |
20120145004 | Vacuum system for nail salon work station - A system for ridding the working area of a nail salon work station of fumes and nail dust. The system is self-contained within the particular work station and has a vacuum system that draws air in from the area surrounding and proximate the working area to remove the fumes and dust. A fan draws that air into a chamber containing a bag-type, particulate filter that filters out the nail dust. Downstream of the bag-type filter is a fume filter that receives the air from the bag-type filter, having been pressurized by the fan, and provides a filter of the fumes. The air, now having passed through a particulate filter and a fume filter is exhausted into the room at a location remote from the working area. The bag-type filter is inexpensive and readily replaced. | 06-14-2012 |
20130025456 | AIR CLEANING FILTER MEDIA - An air purifying filter having vitamins, enzymes and/or other beneficial particles trapped between two light scrims of a carrier. The filter controls the release of the beneficial particles by using a predetermined size and shape of the openings in the air purifying filter media, and by reacting the particles with the air or other matter that passes through the filter, thereby causing the particles to shrink. The filter is also capable of retaining microorganisms by killing or otherwise controlling them due to the beneficial particles of the filter. | 01-31-2013 |
20130133517 | Filter Element and Process for Producing a Filter Element - The invention relates to a hotmelt adhesive comprising a hotmelt adhesive mixture, the mixture including a) 15-85% by weight of a first, polyester-based hotmelt adhesive and b) 15-85% by weight of a second, polyamide-based hotmelt adhesive. | 05-30-2013 |
20130263738 | HIGH TEMPERATURE FILTER - A high temperature filter containing a membrane, a support substrate, and a porous adhesive layer. The porous adhesive layer is adjacent the inner surface of the membrane and the inner surface of the support substrate such that the membrane and the support substrate sandwich the porous adhesive layer. The porous adhesive layer comprises an adhesive having an adhesive operating temperature of at least about 450° F. The support substrate is a woven textile, a non-woven textile, a knit textile, or a film, and has a support operating temperature of at least about 500° F. | 10-10-2013 |
20140165835 | SYSTEM AND METHOD FOR CONTROLLING AND TREATING GAS EMANATIONS INSIDE A WASTEWATER ACCESS SHAFT - The system makes it possible to control and treat gas emanations inside a wastewater access shaft. The system includes a cover with at least one pivoting part, which is normally closed, having a substantially horizontal rotation axis and able to allow solid and/or liquid matter falling onto the main upper surface of the cover to pass toward the bottom of the access shaft. The cover also includes a raised part that has at least one lateral wall and includes a plurality of orifices situated vertically above the main upper surface of the cover. The orifices define an outlet of a gas-emanations circuit formed between the underside and the top of the cover. An air filter is arranged across the circuit. The filter is moistened by a liquid that comes from a reservoir in order to treat the emanations. | 06-19-2014 |
20140190352 | LIQUID COLLECTING PERMEABLE STRUCTURES - A structure for collecting liquid droplets from an aerosol can have a structure and properties that are selected for efficient liquid collection. In particular, the strand radius and spacing of a mesh, and a material for coating the mesh, can be selected to provide efficient collection of water droplets from fog. | 07-10-2014 |
20140373715 | PROCESS AND SYSTEM FOR SEPARATING FINELY AEROSOLIZED ELEMENTAL MERCURY FROM GASEOUS STREAMS - A method and apparatus are provided for separating droplets of finely aerosolized elemental mercury from a fluid stream in which the droplets are dispersed, particularly a gaseous stream. In the method, a precious metal wire capillary surface or precious metal-coated wire capillary surface is contacted with the gaseous stream, causing the aerosolized droplets to deposit on the capillary surface and by capillary action to coalesce with other of such droplets. The surface is oriented to allow the mercury to flow by gravitational forces and capillary action to the lowermost portions of the surface, where it accumulates and can be collected. Metallic capillary surfaces comprised of finely braided strands of silver, gold, palladium, platinum, or rhodium wire, or wire coated with one or more of these metals, are particularly preferred. | 12-25-2014 |