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| Number | Title | Issue Date |
| 7419526 | Conformal filter cartridges and methods Conformal filter cartridges, filtering apparatus using the conformal filter cartridges, and methods of manufacturing the conformal filter cartridges are disclosed. The conformal filter cartridges may include a bed of filter material between a pair of support plates,... | 09/02/2008 |
| 7396392 | Installation for treating at least one fluid and use thereof for the separation of at least one constituent of a gas mixture An apparatus and method of use for treating at least one fluid, in a container that holds at least one mass of a particulate material between two perforated walls. Near the upper part of the mass, at least one deflector extends from the first wall towards the second... | 07/08/2008 |
| 7332012 | Multi-stage filtering apparatus A filtering apparatus having a filter retrieval apparatus, an integrated jib, and a clamping assembly for providing a seal between a filter and a cabinet. ... | 02/19/2008 |
| 7329311 | Porous sintered composite materials The present invention is directed to porous composite materials comprised of a porous base material and a powdered nanoparticle material. The porous base material has the powdered nanoparticle material penetrating a portion of the porous base material; the powdered ... | 02/12/2008 |
| 7320723 | Exhaust gas filter and filtering system An exhaust gas filter cartridge which is suitable for use in a muffler such as to form an exhaust gas filtering system is disclosed. The filter cartridge preferably includes a first porous longitudinal wall and a second porous longitudinal wall, both porous longitud... | 01/22/2008 |
| 7112237 | Porous sintered composite materials The present invention is directed to porous composite materials comprised of a porous base material and a powdered nanoparticle material. The porous base material has the powdered nanoparticle material penetrating a portion of the porous base material; the powdered ... | 09/26/2006 |
| 7077888 | Device for separating dust from flue gases from combustion plants, especially solid fuel combustion plants The invention relates to a device for separating dust from flue gases from combustion plants, especially solid fuel combustion plants, comprising at least one dust filter via which the flue gases are guided, and by means of which the dust from the flue gases can be ... | 07/18/2006 |
| 7070638 | Burp gas filtering and deodorizing device The burp filtering device has the body of a writing pen, with an intake port at the upper end of the body, a plurality of exhaust ports adjacent the writing tip, and a filter disposed within the body. The filter may be made of activated charcoal or other media for f... | 07/04/2006 |
| 7037354 | Expandable air filtration apparatus An apparatus for air filtration has a pleated filter media with an expandable mesh bonded to the pleated filter media, an outer frame, an inner frame, support members disposed within the outer and inner frame wherein the support members create openings in the inner ... | 05/02/2006 |
| 7018449 | Filtration media Particles may be used to filter oleo material such as grease from a flow of fluid such as a gas. The particles can be arranged into a bed to filter the oleo material from the fluid. The filtrate substance collect on the inorganic particles. The particles are re-usab... | 03/28/2006 |
| 6994743 | Two stage air filter A two stage air purification system is provided for the removal of airborne impurities from an airflow prior to the airflow entering a building's ductwork. In particular, a primary air filter is mounted within the hood of, for example, a cooking area and operable to... | 02/07/2006 |
| 6814783 | Filtration media of porous inorganic particles Inorganic, porous particles filter a substance or substances from a flow of fluid such as a gas. The particles can be arranged into a bed to filter a substance (filtrate substance) from a fluid. The filtrate substance can collect on or within the pores of the inorga... | 11/09/2004 |
| 6797041 | Two stage air filter A two stage air purification system is provided for the removal of airborne impurities from an airflow prior to the airflow entering a building's ductwork. In particular, a primary air filter is mounted within the hood of, for example, a cooking area and operable to... | 09/28/2004 |
| 6773491 | Activated carbon filter In an activated carbon filter for reducing vapor emissions from a fuel supply system including, in a filter housing, a first connecting section for communication with the atmosphere and a second connecting section for communication with the fuel supply system, an ac... | 08/10/2004 |
| 6692555 | Internal combustion engine air cleaner and adsorption filter A sheet-like adsorption filter formed by sandwiching particulate activated carbon with heat-resistant nets and non-woven fabric sheets that have a percentage of void of 90% or higher, is disposed at an internal combustion engine side of a filter element.... | 02/17/2004 |
| 6517613 | Tank for containing granular absorbers for cleaning gases A tank for containing granular adsorbers for cleaning gases, wherein the tank has a gas inlet, a gas distributing chamber, at least one adsorption chamber defined by vertical, gas-permeable walls and containing a charge of adsorbers in bulk, an outflow ch... | 02/11/2003 |
| 6468333 | Gas purifier apparatus The present invention relates to an apparatus used for gas purification in a manner that allows for higher flow rates without an unacceptable increase in the pressure vessel diameter. The purifier contains inner and outer filter sleeves. Between the sleev... | 10/22/2002 |
| 6228150 | Carbon dioxide absorbent in anaesthesiology The invention concerns a carbon dioxide absorbent for use in anaesthesiology, in which the absorbent comprises at least one pharmaceutically acceptable hydroxide essentially free of sodium and/or potassium hydroxide and a carbon dioxide absorbingly effect... | 05/08/2001 |
| 6200368 | Combined filter device for filtering out particles and gases A combined filter, for removing solid particles and noxious gases from air to be delivered into the cabin of a vehicle, as part of a ventilating, heating and/or air conditioning system, comprises two layers of a non-woven tissue such as polypropylene, bet... | 03/13/2001 |
| 5733350 | Container for solid filtration media and filtration system utilizing same A disposable paperboard container for holding a bed of solid filtration media is disclosed. The container is strong enough to prevent excessive pillowing, has sufficient open area to minimize the pressure drop across the bed, avoids bypass gaps caused by ... | 03/31/1998 |
| 5651810 | Apparatus and method for filtering and sampling airborne respiratory contaminants A combination respiratory filter and sampling device has been developed which collects airborne contaminants for respiratory exposure measurements. The devices, which fit existing commercial half-mask respirators, are generally smaller and lighter in weig... | 07/29/1997 |
| 5593477 | Gas and odor absorber A device for removing odors and undesirable gases from ambient air comprising an absorbent material enclosed in a tubular shaped container designed to encourage flow of the ambient gases through the container and over and through the absorbent material. I... | 01/14/1997 |
| 5560757 | Exhaust particulate filter for diesel engine An exhaust particulate filter for a diesel engine which is high in collecting efficiency of exhaust particulates and small in pressure loss, by using a felt-like body having pores of an optimum inner diameter between heat resistant inorganic lengthy fiber... | 10/01/1996 |
| 5525145 | Filtering apparatus for a forced air duct grill A filter apparatus has a rigid housing surrounding a piece of preferably self charging electrostatic filter material and having a preferably magnetic attachment device for mounting the filter apparatus directly in front of a grill at an end of a cold air ... | 06/11/1996 |
| 5514205 | Apparatus for removing harmful objects from a gas An apparatus for removing harmful objects comprising a cylindrical casing having an inlet and an outlet, a fill-up section for a granular or lump treating material for adsorbing or resolving the harmful objects. An inlet obstructive plate provided within ... | 05/07/1996 |
| 5464461 | Filter for mounting on an avionic line replaceable unit A filter assembly for a coolant air stream flowing through an LRU box has a base frame with a large opening superimposed on the perforated top surface of the box. A filter element is superimposed over the opening and a cover having a large opening is hing... | 11/07/1995 |
| 5332409 | Air filtration system An air filtration system includes a holding frame supported by a universal mounting frame and a cartridge in the holding frame. The holding frame has a header used to permanently mount and seal the holding frame to the universal frame. The filtration cart... | 07/26/1994 |
| 5271751 | Device for removing dust from a machine When work processing equipment and more particularly floor sanding machines have means for drawing off dust, they are also fitted with a device for aspiration of the dust laden air and the collection of the dust. The device in accordance with the inventio... | 12/21/1993 |
| 5232480 | Filter A filter is disclosed including a four-sided frame having a central aperture therein. Four side walls are provided, with each side wall being pivotally mounted to one side of the frame, and movable between a use position wherein each side wall is substant... | 08/03/1993 |
| 5135551 | Muffler with replaceable filters The invention relates to an improved muffler for an automobile that filters the exhaust and eliminates noise and odor as well as forces steam back into the engine to improve gas mileage. The muffler uses replaceable cartridges that serve as filters to div... | 08/04/1992 |
| 5037454 | Coalescing apparatus and method A gas purification apparatus which is operable utilizing an upflow direct impingement coalescer. A central inlet in the lower portion of a column expands the flow of air and liquid droplets (vertical flow to horizontal separation). The droplets lose veloc... | 08/06/1991 |
| 4978375 | Plastic air filter housing assembly for use in air conditioners and heating systems A plastic air filter housing assembly for use in air conditioning and heating systems which includes a base member having a pair of round shape longitudinal upper and lower edges and a plurality of transverse frames having a plurality of longitudinally fr... | 12/18/1990 |
| 4900346 | Portable air filtration device A portable filter device provides a substantial mass of particulated charcoal distributed in a horizontally orientated lenticular configuration across a horizontal orifice to provide substantially uniform filtration properties over the orifice area. The f... | 02/13/1990 |
| 4865636 | Interlocking wedge for pleated paper filter element An interlocking wedge for pleated paper filter elements of the type having a plurality of pleated paper filter panels secured in a frame in a zig-zag configuration with plural apexes adjacent both the upstream and downstream ends of the frame forming plur... | 09/12/1989 |
| 4848992 | Gas filter system A gas filter system, suitable for use in a safety installation for nuclear reactor confinement vessels, comprises a generally cylindrical enclosure having a closed bottom. In an upper part of the enclosure is an inlet for the gas to be filtered. There is ... | 07/18/1989 |
| 4673420 | Desiccant dryer A desiccant dryer utilizes a desiccant containing canister, a housing substantially enclosing the canister and a tubular member mounted within the housing. The canister includes two concentrically-arranged and cylindrically-shaped inner and outer walls an... | 06/16/1987 |
| 4670226 | Reactor of moving bed type A reactor of the moving bed type wherein a granular material is packed and held by a louver structure and moved downward and brought into contact with a gas passing through the louver, is improved so as to avoid both accumulation of dust on the louver par... | 06/02/1987 |
| 4502876 | Cartridge for use in rebreathing apparatus A cartridge for use in rebreathing apparatus comprising a filtering device for removing carbon dioxide, a pair of flexible containers (one disposed within the other and in fluid communication with each other through a restricted opening), a coaxial connec... | 03/05/1985 |
| 4306892 | Disposable air freshening packet A disposable packet, containing an air freshening medium, and formed with securing elements such that the packet may be positioned and retained in an air stream for removing contaminants and offensive odors from the air and discharging a filtered scented ... | 12/22/1981 |
| 4093433 | Damper assembly for mobile bed scrubber A wet scrubbing apparatus including a housing with a fluid flow inlet and a fluid flow outlet and a plurality of contactor beds disposed therein. Each contactor bed has an inlet and an outlet in communication with the fluid flow inlet and fluid flow outle... | 06/06/1978 |
