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| Number | Title | Issue Date |
| 7399419 | Modular filtration system A filter system includes a set of modules, each module including screen assemblies and filter media sandwiched between the screen assemblies. A plurality of control assemblies are associated with each of the modules. Each of the control assemblies is in fluid commun... | 07/15/2008 |
| 7396471 | Sediment control drain and method of construction An erosion control basin is a molded open topped receptacle that has support flanges that will support the basin on the interior of a storm drain grate frame. A filter is formed around an upright perforated drain pipe that is on the interior of the basin and which o... | 07/08/2008 |
| 7338599 | Filtration systems and fitting arrangements for filtration systems A filtration system comprising a manifold and a filter having fittings, wherein a carriage supporting the filter is operatively associated with a mounting mechanism to move the fitter between a position in which the filter is spaced from the manifold and a position ... | 03/04/2008 |
| 7338595 | Flow-through tank for water treatment A fluid treatment system includes at least one flow-through tank, a treatment device configured for treating at least one of an untreated fluid and a treated fluid and providing the treated fluid to the at least one flow-through tank and at least one sensing device ... | 03/04/2008 |
| 7338606 | Arrangement and method for maintaining a minimum flow velocity in the coolant return of a machine tool coolant filtration system An arrangement and method for maintaining a minimum flow velocity in return piping receiving dirty coolant from a plurality of machine tools receiving filtered coolant from a filter apparatus. A bypass line diverts clean coolant into the return piping via a pressure... | 03/04/2008 |
| 7237681 | Ring filter element for a liquid filter A ring filter element is provided for a liquid filter, especially for an oil filter for purifying lubricating oil, especially for an internal combustion engine of a motor vehicle. The ring filter element comprises a filter material which is arranged in an annular ma... | 07/03/2007 |
| 7182599 | Method and apparatus for removing particulate metals from dental waste water An inline filter assembly to be used in conjunction with surgical or other procedures, near the patient or chairside in dental operations, that is capable of removing, by filtration, particulate matter from waste-water. The filter assembly is configured to permit ea... | 02/27/2007 |
| 7172689 | Arrangement and method for maintaining a minimum flow velocity in the coolant return of a machine tool coolant filtration system An arrangement and method for maintaining a minimum flow velocity in return piping receiving dirty coolant from a plurality of machine tools receiving filtered coolant from a filter apparatus. A bypass line diverts clean coolant into the return piping via a pressure... | 02/06/2007 |
| 7074332 | Multistage hemodiafiltration/hemofiltration method and apparatus In a blood dialysis system including a source of substitution fluid (10) and a blood dialysis machine, a hemodiafiltration system having a first dialyzer (1) including a first blood compartment (4) having a first blood inlet which receives blood... | 07/11/2006 |
| 6932907 | Fluid treatment elements A fluid treatment element comprises a fluid treatment pack including a fluid treatment medium. The fluid treatment pack has a hollow interior and a barrier is disposed in the hollow interior. The barrier separates a blind region in which fluid cannot flow between th... | 08/23/2005 |
| 6923910 | Filter cartridge having bypass feature A filter cartridge 10 includes a connective end for mating with a filter head 48 and providing fluid communication between the filter media chamber and the filter head. The connective end includes a tubular member 34 disposed axially in a hollow... | 08/02/2005 |
| 6811694 | Liquid filter A liquid filter for removing contaminants from liquids such as lubricating oil, water or fuel, comprising a filter housing (10), a filter element (15), a support body (16) and a slide valve (17), which, when closed, prevents liquid from f... | 11/02/2004 |
| 6808623 | Top of grate catch basin filter The invention is a removable filter for mounting on the top of a grate for a storm water drain that comprises an overflow bypass that has a water barrier wall that is compressible and thereby safe for traffic. The filter removes pollutants from the storm water prior... | 10/26/2004 |
| 6805804 | Continuous roll basin insert The invention is a basin insert, for use with a storm water drain basin having a perforated cover and cover support ledges. The invention comprises a filter bag assembly having a filter bag, support means to suspend the assembly within the drain basin, and overflow ... | 10/19/2004 |
| 6800200 | Dual-flow filter cartridge A filter cartridge configured to provide two or more levels of fluid filtration or conditioning from within a single filter cartridge is disclosed, the filter cartridge including a housing that defines an interior cavity and has an inlet portion for receiving fluid ... | 10/05/2004 |
| 6719912 | Bar screen system with emergency discharge doors A screen system used in fluid channels has emergency discharge doors. The emergency discharge doors are located within the debris plate of the bar screen system and can be opened, as needed, to prevent fluid from overflowing should the grid screen become obstructed.... | 04/13/2004 |
| 6716356 | Thermally enhanced dialysis/diafiltration system The present invention provides a hemodialysis or hemodiafiltration system and method using two dialyzer stages (122, 138), wherein the temperature of a dialysate fluid stream of the first cartridge (122) is increased such that the blood in the first cartridge (122) ... | 04/06/2004 |
| 6685835 | Method for filtering surface water with thin supernatant layer and implementing plant In a method of filtration, a liquid to be filtered is brought into contact with the surface of a filter medium and is passed through the filter medium. A supernatant liquid layer is created on the surface of the filter medium, and the upper level of the l... | 02/03/2004 |
| 6666974 | Subgrate drain basin filter The invention is a filter system and support structure for use with drain basins, which have a perforated cover and cover support ledges, comprising a bag assembly, which is used as the filter, support members, an overflow bypass, and a channel for direct... | 12/23/2003 |
| 6585901 | Method of draining water from low-consistency water-fiber suspensions A method of draining water from low-consistency water-fiber suspensions, in which the water-fiber suspension is fed to a filtering surface comprising holes. The rougher fibers are first separated from the water-fiber suspension and fed to the filtering su... | 07/01/2003 |
| 6579456 | Method and device for precipitating beverage sediment A device and a method are described, which are used for precipitating beverage sediment from the rinsing mixture of beverage production machines and which comprise a rinsing conduit, a sediment receptacle and a filtering means. In order to design a device... | 06/17/2003 |
| 6576129 | Recyclable filter cartridge and pressure vessel A filter assembly (20) is described that includes a sub-stantially recyclable filter cartridge (30) inside a pressure vessel (22). The invented filter cartridge comprises substantially non-pressure bearing walls, except for a pressure-bearing neck (44) th... | 06/10/2003 |
| 6503390 | Filtration of hydrocarbon containing liquid An apparatus for and method of filtering hydrocarbon contaminated water is disclosed herein. The present invention may be used in drainage openings, particularly in parking lots and containment areas for large sources of hydrocarbons such as oil tanks or ... | 01/07/2003 |
| 6497675 | Device for extracorporeal treatment of physiological fluids of organism A device for extracorporeal treatment of physiological fluids of organism has means forming a filtration membrane for filtering smaller-size components of a physiological fluid withdrawn from a patient from larger-size components of the same, a bed of par... | 12/24/2002 |
| 6423231 | Non-isosmotic diafiltration system A method of hemodiafiltration including the steps of supplying a blood inflow, diafiltering the blood inflow using a first non-isosmotic dialysate fluid to provide a partially diafiltered blood outflow, mixing the partially diafiltered blood outflow with ... | 07/23/2002 |
| 6402942 | Catch basin curb inlet filter assembly A catch basin curb inlet filter assembly for preventing debris from being swept into the catch basin by rainwater. The filter assembly has first and second outer filters, an inner filter located between said first and second outer filters adjacent the low... | 06/11/2002 |
| 6383385 | Filter unit for the physical elimination of microbes, suspended matter and solids from water The invention relates to a filter device for the physical elimination of microbes, suspended matter and solids from water, which in a housing has a filter insert made of 200 to 10000 hollow-fiber membranes with a defined pore width between 0.001 and 1.0 Î... | 05/07/2002 |
| 6294083 | Sump covering filter with bypass valve A sump pan for a device such as a transmission or engine lubricating system includes an upper chamber and a lower chamber which are separated by a partition. The partition has an opening therethrough in which a filter media is positioned for filtering dir... | 09/25/2001 |
| 6264833 | Coolant filter assembly for a vehicle A coolant filter kit, for attaching in-line to a coolant hose of a combustion engine, includes a fluid conduit member and a coolant filter apparatus. The fluid conduit member has a stem and two opposed branches connected to the stem, with an inlet formed ... | 07/24/2001 |
| 6251291 | Reservoir-and-filter system and method of use A reservoir-and filter system for receiving fluid and for removing impurities from fluid is provided in an embodiment of the invention. The system includes a housing with at least two cavities; a first cavity with at least one unfiltered-fluid inlet and a... | 06/26/2001 |
| 6086756 | Gross pollution filter A water filter arrangement (10) for trapping gross pollutants flowing in a storm water system is provided in-line or at end-of-line of a storm water pipe. The arrangement comprises an inlet (14) and an inlet area (18) which directs incoming water (16) int... | 07/11/2000 |
| 6022478 | Device and process for the substance-specific treatment of fluids Device and process for the substance-specific treatment of fluids by means of treatment elements made from porous membranes, arranged in a casing, where the treatment elements have cavities which are closed or open in the direction of the outlet arrangeme... | 02/08/2000 |
| 5942112 | Hollow fiber ultradialyzer apparatus A single housing dual compartment hollow fiber membrane dialyzer for hemodialysis is provided having two coaxially oriented hollow fiber membrane bundles encased within the housing. One of the two compartments within the housing is filled with dialysate. ... | 08/24/1999 |
| 5928504 | Faucet-mounted water treatment device A faucet-mounted water treatment device including a flow totalizer and an end-of-life indicator cooperating with the totalizer to tell the user when it is necessary to replace the filter cartridge. End-of-life indication is provided by a valve which stops... | 07/27/1999 |
| 5919369 | Hemofiltration and plasmafiltration devices and methods Disclosed are preferred devices and methods which provide extracorporeal treatment of blood or other fluids for effective plasmafiltration or hemofiltration alone or in combination with dialysis. Preferred devices combine plasmafiltration and dialysis dev... | 07/06/1999 |
| 5904842 | Removable storm water devices Debris removing screen basket and overflow apparatus embodiments for use in a storm collection sewer. The device has two embodiments, each including a central panel with foldable wings in each side of the central panel. During initial assembly, the wings ... | 05/18/1999 |
| 5868936 | Affinity membrane system and method of using same The present invention provides an improved affinity membrane device and method for the effective removal of target molecules in plasma. The affinity membrane device is designed for use in an extracorporeal blood circuit and can be employed concurrently wi... | 02/09/1999 |
| 5811257 | Detection apparatus The subject invention pertains to an assay device suitable for use in testing samples for the presence of microorganisms. The assay device of the subject invention comprises a housing having two chambers therewithin, each chamber being partially defined b... | 09/22/1998 |
| 5714066 | Water purifier having separate sink-mounted discharge faucets for dispensing purified water and discharging waste water A water purifying system includes filters for purifying tap water, a storage tank for storing the purified water, and a water discharge apparatus. The filters include a membrane filter which produces purified water and waste water. The water discharge app... | 02/03/1998 |
| 5660722 | Hemo(dia)filtration apparatus and filtrate flow regulator Described is a hemo(dia)filtration apparatus (10) with two blood filters (60) and (12) connected in series and a sterile filter (38) connected upstream thereof. The first chambers (64) and (14) and the second chambers (68) and (16) of both blood filters (... | 08/26/1997 |
