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Document Title |
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7604687 |
Gas filtration media
A gas filtration media comprises a microporous membrane. The microporous membrane includes an ultrahigh molecular weight polyethylene (UHMWPE), an inorganic material, wherein the ratio of inorganic...
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7601192 |
Recirculation filter
The invention relates to an improved electrostatic filter and filter media for filtering contaminants, such as particulates and vapor phase contaminants, from a confined environment such as...
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7597745 |
Filter materials for adsorbing hydrocarbons
A porous filter medium forms a filter or liner for extracting hydrocarbons from vapors emitted from a motorized vehicle, device or appliance fuel tank. The filter medium is a polymer network of a...
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7591883 |
Microfiber supported nanofiber membrane
A nanofiber membrane is formed on a microfiber membrane. The nanofiber membrane may be electro sprayed directly onto the microfiber membrane and becomes integrated with the microfiber membrane to...
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7559966 |
Exhaust gas filter
An exhaust gas filter comprises an outer tube, a plurality of center-closing filter units each having an isolation plate; and a plurality of center-opening filter units having an annular isolation...
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7556663 |
Dual pleated air filter
A dual pleated air filter according to the present disclosure may include two or more generally parallel, pleated filter elements layered perpendicular to the influent air stream and having the...
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7553440 |
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...
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7547341 |
Equipment air filter assembly
A filter assembly for a structure having an air intake, the filter assembly including a filter media that is sized and shaped to cover the air intake. The ends of the filter media are connected by...
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7517944 |
Process for producing polycarbonate
Provided a process for producing a polycarbonate which comprises reacting an aqueous alkali solution of a dihydric phenol with phosgene in the presence of an organic solvent to produce a...
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7517378 |
Integral rigid edging for synthetic air filters
The invention provides an air filter with an integral rigid edge. The filter uses a pre-cut sheet of non-woven synthetic filter material. The sheet has a generally rectangular central portion and...
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7501003 |
Composite filter media
The invention provides a renewable composite filter media for removal of particles from a fluid stream. The filter media includes a membrane filtration layer comprising a porous polymeric membrane...
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7488365 |
Filter element using corrugated media sheet
A corrugated web having tapered flutes is usable in straight-through flow filter elements. The corrugated web can be made by passage between a pair of corrugated rollers having tapered teeth....
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7473302 |
Liquid housing container and liquid supply apparatus
The present invention provides a durable liquid housing container and a durable liquid supply apparatus which use a gas-liquid separation membrane. Thus, a gas-liquid separation membrane ( 2 )...
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7465332 |
Disposable grease filter for air filtration system and method of manufacturing same
An all natural filter assembly without toxic materials for use in an air filtration unit is provided. The filter assembly for use in an air filtration unit includes a support frame and a disposable...
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7455706 |
Filter system for electronic equipment enclosure
A filter system including a method for self cleaning the filter system of an electronic equipment enclosure where air flow is monitored either by monitoring fan performance of air flow velocity...
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7452831 |
Filter medium
The filter fabric containing polyphenylene sulfide fibers, characterized in that the following (1) and/or (2) is satisfied is used to provide a filter fabric and a bag filter composed of the filter...
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7431901 |
Apparatus and method for deodorizing confined air spaces which utilize baking soda
Apparatus and methods for removing malodor from the air, particularly from confined spaces are disclosed. Such devices and methods are useful for example for storing and preserving food in closed...
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7416580 |
Filter assemblies and systems for intake air for fuel cells
A filter assembly for removing particulate contaminants and chemical contaminants from an incoming dirty air stream for a fuel cell. The filter assembly also includes a noise suppression element...
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7416577 |
Air intake filter screen assembly including a stand-off frame for preventing hail damage to surface coils of an associated air intake unit
A filter screen assembly for use with an air intake structure, the structure including a face within which is formed an air intake opening. The filter screen assembly includes a screen having a...
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7399333 |
Filter element and process for producing the same
The present invention provides a filter element and a method for producing the same, which do not generate pollution during waste disposal, can be easily produced, improve the pressure loss and...
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7390351 |
Electrets and compounds useful in electrets
An electret filter media that includes a thermoplastic resin and a compound of the formula Y 2 -A(R 1 ) n —Y 1 , where A is benzene, naphthalene or anthracene, Y 1 and Y 2 are each...
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7390343 |
Drinking water filtration device
The invention is a device for purifying drinking water that has at least one fibrous structure. Preferably, there is an upstream and downstream fibrous structure. Each fibrous structure is a...
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7364607 |
Wrought fiber sheet and filter unit
A wrought fiber sheet or air cleaning filter unit that exhibits high performance and is biodegradable so as to enable reducing load upon environment. The wrought fiber sheet is produced by coupling...
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7338547 |
EMI-absorbing air filter
Electro-magnetic-energy absorbing materials are used to treat air filters, such as those used in association with electronic equipment thereby suppressing the transmission of electromagnetic...
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7318853 |
Polymer, polymer microfiber, polymer nanofiber and applications including filter structures
Disclosed are improved polymer materials. Also disclosed are fine fiber materials that can be made from the improved polymeric materials in the form of microfiber and nanofiber structures. The...
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7318852 |
Bag house filter with fine fiber and spun bonded media
Disclosed are improved polymer materials. Also disclosed are fine fiber materials that can be made from the improved polymeric materials in the form of microfiber and nanofiber structures. The...
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7316723 |
Air filter with fine fiber and spun bonded media
Disclosed are improved polymer materials. Also disclosed are fine fiber materials that can be made from the improved polymeric materials in the form of microfiber and nanofiber structures. The...
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7311752 |
Electrostatic air filter
The invention is a filter for gaseous media in which nano alumina fibers and second fibers are arranged in a matrix to create asymmetrical pores. The filter is a high efficiency, high capacity...
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7311751 |
Filter medium
A filter medium includes at least a first and a second layer. Both first and second layers have a layer volume VLq and a layer filtering surface SLq, where SLq is the accumulation of all mantle...
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7309372 |
Filter medium and structure
Thermoplastic bicomponent binder fiber can be combined with other media, fibers and other filtration components to form a thermally bonded filtration media. The filtration media can be used in...
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7309369 |
Filter module
The invention relates to a filter module in the form of a hollow body with at least one chamber. The walls of the hollow body are made of a non-metallic material that can be comminuted and/or...
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7294175 |
Personal inhalation filter
A cylindrical or other suitably shaped filter container for insertion into a user's nares to filter inhaled air to remove airborne items. The filter container has two open ends forming a container...
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7279028 |
Electrostatic filter
An electrostatic filter having an improved dielectric is described. The dielectric constitutes a dielectric mat formed from high porosity non-woven fibers having pores that have a void fraction of...
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7270692 |
Air filtration arrangements having fluted media constructions and methods
Filter arrangements include a barrier media in the form of fluted media treated with a deposit of fine fibers. The media is particularly advantageous in high temperature (greater than 140 to 240°...
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7264645 |
Plate-shaped filter element
A plate-shaped filter element made from several wire cloth layers and having at least one layer in the form of a filter cloth is designed to allow particles of a certain size can be filtered out...
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7255723 |
Crest supported filter frame assembly and method
A fluid pleated filter assembly arrangement including a method and structure wherein crests of the pleated medium are sharp and narrow being enhanced by alignment of the fibers with the direction...
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7255722 |
Gas filter
A filtration portion 11 constituting a filter element 3 is composed of a first filtration material 9 wound around the outer periphery of an inner tube 8 and a second filtration material 10...
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7244292 |
Electret article having heteroatoms and low fluorosaturation ratio
An electret article that includes a polymeric material that has electric charge imparted thereto, that has one or more heteroatoms, that has a fluorosaturation ratio of less than 200, and that has...
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7244291 |
Electret article having high fluorosaturation ratio
An electret article that includes a polymeric material that has electric charge imparted thereto, that has a CF 3 :CF 2 ratio of at least 0.15 and that has a fluorosaturation ratio greater than...
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7235122 |
Filtration media for filtering particulate material from gas streams
Filtration media are disclosed for use in high efficiency air filters for filtering particulate matter in air. The media make use of at least one layer of fibers having a diameter less than 1000...
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7208026 |
Heat-resistant filter
To provide a heat resistant filter of which the reduction of tensile strength and folding endurance is small even when used as a filter material for a filter used at high temperatures, failure of...
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7160361 |
Evaporative emission treatment device
Disclosed herein an evaporative emission treatment device comprising: a housing; and an adsorption member disposed in the housing, the adsorption member comprising an adsorption component...
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7156891 |
Forced air system air filter
An air filter including a filter media having a plurality of flat pleats defining a plurality of truncated pleat tips and sloping side surfaces along a front face and a rear face. The truncated...
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7156890 |
Hubcap filter
A hubcap breather assembly is provided for a hubcap housing lubricated wheel bearings in an automotive vehicle. The breather assembly includes a resilient, annular collar that fits into an access...
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7147694 |
Fibrous media utilizing temperature gradient and methods of use thereof
A method for removing a liquid from a gas, comprises passing the gas and the liquid through a network of fibers containing at least one fiber in which a temperature gradient has been induced along...
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7138008 |
Filter assemblies and systems for intake air for fuel cells
A filter assembly for removing particulate contaminants and chemical contaminants from an incoming dirty air stream for a fuel cell. The filter assembly also includes a noise suppression element...
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7138006 |
Mixed matrix membranes with low silica-to-alumina ratio molecular sieves and methods for making and using the membranes
A mixed matrix membrane is provided which comprises a continuous phase organic polymer and small pore alumina containing molecular sieves dispersed therein. The molecular sieves have a...
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7115151 |
High efficiency particulate air rated vacuum bag media and an associated method of production
A vacuum bag media and associated method of production, which includes a first layer that includes an expanded polytetrafluoroethylene membrane and at least one second layer that includes a first...
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7115150 |
Mist filtration arrangement utilizing fine fiber layer in contact with media having a pleated construction and floor filter method
Filter arrangements for mist removal include a barrier media, usually pleated, and treated with a deposit of fine fibers. Filter arrangements may take the form of tubular, radially sealing...
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7097684 |
Method of forming combined pleated scrim and filter media materials and product of same
A high efficiency fluid filter arrangement wherein a combined layer of scrim and filter media applications is of empirically relatively estimated weight size and depth with intermediate pleat...
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