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| Number | Title | Issue Date |
| 7628913 | Aquarium filter cartridge and filtration system An aquarium filter cartridge including activated carbon or the like and a housing wherein the water traces an S-shaped path is disclosed. In the S-shaped path the water flows horizontally through a floss type filter, downward to the bottom of the housing, horizontal... | 12/08/2009 |
| 7429321 | Aquarium filter cartridge and filtration system An aquarium filter cartridge including activated carbon or the like and a housing wherein the water traces an S-shaped path is disclosed. In the S-shaped path the water flows horizontally through a floss type filter, downward to the bottom of the housing, horizontal... | 09/30/2008 |
| 7387729 | Filter cartridge for a standalone point of use water purification device A filter cartridge for a standalone point of use water purification device includes tandem first and second flow passageways containing flowthrough filter media that cooperate to provide opposing flow directions in the first and second flow passageways that reduce, ... | 06/17/2008 |
| 7210585 | Edge filter assembly An edge filter assembly is disclosed. The edge filter assembly may include a housing having an inlet and an outlet. The edge filter assembly may further include a filter element disposed within the housing including first and second filter plates and first and secon... | 05/01/2007 |
| 6942796 | Filter device for filtering a liquid A filter unit is disclosed suitable for use in a filter housing. The filter unit comprises superposed and spaced-apart inclined lamellar structures, preferably in the form of hollow truncated cones, each having a lower end side opposite an upper end side and a passa... | 09/13/2005 |
| 6849206 | Paste for forming thick film, method for manufacturing thereof, and filter apparatus A method for manufacturing a paste for forming a thick film is provided, in which undesired lump materials are efficiently removed from the paste for forming the thick film. The paste, which contains a solid material and an organic vehicle and has a viscosity in the... | 02/01/2005 |
| 6667385 | Method of producing aminium lactate salt as a feedstock for dilactic acid or dimer production Polylactic acid is produced from dimers of lactic acid in an energy saving manner by contacting a lactic acid source via an extraction membrane with an amine carrier solvent to extract lactic acid across the membrane. One or two membranes may be used. Aft... | 12/23/2003 |
| 6660160 | Apparatus for separation of solids from a liquid A separation apparatus, in particular intended for separation of amalgam from water, includes a pre-settling chamber, a distribution chamber and a fine settling zone. The fine settling zone includes a plate package, with a plurality of plates fixed with s... | 12/09/2003 |
| 6517719 | Oil and water separator A storage tank includes an oil and water separator in which the frontal area of the coalescers is increased relative to known arrangements of coalescers in oil and water separators. By arranging the coalescers such that the surface area of the coalescers ... | 02/11/2003 |
| 6475382 | Treatment unit for treating a fluid and method thereof A treatment unit is disclosed for treating a fluid in continuous mode. This treatment unit provides the opportunity to carry out simultaneously an enzymatic transformation and a capture of a fluid element. The unit has a reservoir with a fluid inlet for r... | 11/05/2002 |
| 6447680 | Double pass septic tank outlet filter A filter for filtering particulate matter from liquids adapted to be received in a filter casing having a casing wall and an outlet is provided. The filter includes a filter element having a plurality of openings therein for filtering particulate matter w... | 09/10/2002 |
| 6383372 | Sequential flow filtration chamber for treatment of waste water and associated method A sequential flow filtration chamber for treatment of waste water effluent from a septic tank comprises an inlet positioned in fluid communication with the septic tank for receiving waste water into the chamber, at least one partition positioned within th... | 05/07/2002 |
| 6360898 | Filtration device for a waste water treatment system A filter and housing for waste water treatment includes a housing having a plurality of coaxially mounted vertically extending sections adaptable to receive a filter cartridge therein. An upper section is provided with an outlet consisting of at least two... | 03/26/2002 |
| 6332983 | Chip treatment device A chip treatment device 100 includes a box-shaped housing 110, and an upper surface panel 112 of the housing is connected to a sloped portion 114. The interiors of the housing 110 is divided into upper and lower areas by a partition panel 130, and to the ... | 12/25/2001 |
| 6322694 | Machine coolant management system An apparatus for removing floating and subsurface contaminants from a machine tool coolant bath is disclosed. The apparatus comprises a floating skimmer for collecting floating contaminants from the surface of the bath connected to an oil trap having an i... | 11/27/2001 |
| 6319403 | Effluent filter for septic tanks and other on-site waste disposal systems An effluent filter for septic tanks and the like has substantially horizontal filtering levels provided in a stepped arrangement on both an inlet side and an outlet side of the effluent filter. The effluent filter provides an array of both substantially h... | 11/20/2001 |
| 6245226 | Pretreatment system and method for recycling exhaust water A pretreatment system and a pretreatment method for recycling exhaust water, for purifying exhaust water to a water quality acceptable to ordinary water-purification equipment, has advantages of small space occupation, low energy consumption, and lower co... | 06/12/2001 |
| 6210567 | Filtration device for tank water for aquarium fish A filtration device for tank water for aquarium fish having several partitions dividing the casing into several filtration chambers. A removable filtration cartridge is inserted into each filtration chamber. The cartridge has top and bottom panels with pe... | 04/03/2001 |
| 6024870 | Sewage filtration system A sewage filtration system for efficiently filtering sewage waste material from smaller residential areas without the use of expensive sewage treatment plants. The inventive device includes a conventional septic tank connected to each building structure's... | 02/15/2000 |
| 5861093 | Serpentine flowpath filtration apparatus with horizontally mounted filters having handles to facilitate removal An apparatus for filtering and cooling liquid, with four filtration chambers are connected by a series of passageways. The apparatus is mounted on a cart so that it may be rolled into position under a machine quickly and easily. Once the apparatus is in p... | 01/19/1999 |
| 5840186 | Liquid filtration apparatus A filter for treating liquids comprises an elongate housing having a liquid inlet port, an outlet port for concentrated liquid and a permeate discharge port. Extending through the housing is a parallel array of filter tubes, each having a permeable wall s... | 11/24/1998 |
| 5538632 | Multiple filter dynamic washer A pressurized dynamic pulp washer including an annular hollow housing in which the stock is driven axially along a plurality of stationary, annular, coaxial wash filters in axially reversible directions, with an annular rotatable shell between the wash fi... | 07/23/1996 |
| 5478465 | Composite liquid filter A liquid filter apparatus particularly useful in removing particulates from parts washing solvent. A filter assembly includes an exterior, fluid-impermeable container, preferably in the form of a flexible sidewall bag, and an interior filter element with ... | 12/26/1995 |
| 5476582 | Filter cover assembly for differential housing mechanism A differential housing includes magnetic filters for removing metal particulate from oil circulating within the differential mechanism of a vehicle. The differential housing also permits the level and temperature of the oil to be monitored.... | 12/19/1995 |
| 5470469 | Hollow fiber cartridge A cartridge containing a plurality of hollow fiber membranes is disclosed. The cartridge comprises a plurality of fibers arranged in a bundle and at least one end of the bundle embedded in a tubesheet. The tubesheets are fitted with end caps to provide a ... | 11/28/1995 |
| 5269922 | Water filter The present invention is related to a water filter and particularly to a water filter with a rotary filter tube, comprising a water filter cylinder and a plurality of filter leaf thimbles so that there is a maximum filter course in a certain filter space ... | 12/14/1993 |
| 5223154 | System for filtering liquids in a catch basin using filters in series and overflow channels Apparatus, methods and media for filtering liquids are especially suited for insertion into an existing storm water catch basin. The filtration that occurs reduces concentration of storn water runoff pollutants including heavy metals, suspended solids, pa... | 06/29/1993 |
| 5178758 | Biochemical water filter A biochemical water filter comprising a cylindrical shell, a solar light tube and several ultraviolet tubes disposed in the shell so as to cultivate nitric bacteria to get rid of harmful bacteria with help of the light tubes for purifying water used in an... | 01/12/1993 |
| 5141640 | Tubular membrane module for separation A tubular membrane module for separation providing a plurality of perforated support tubes having a semipermeable membrane for separation provided on inner surfaces thereof, a cylindrical case having a permeated solution port provided on a drum portion th... | 08/25/1992 |
| 5013437 | Hollow fiber membrane fluid separation device adapted for boreside feed which contains multiple concentric stages The invention is a hollow fiber membrane fluid separation device specially adapted for boreside feed which contains multiple concentric stages.... | 05/07/1991 |
| 5000855 | Transverse sheet membrane separation module, components thereof and related methods A wafer (10) providing transfer sheets of semipermeable membrane (21). Such wafers include peripheral support means (11) defining a generally cylindrical ring and having inside (14) and outside faces (15) and upper (12) and lower (13) faces and, a plurali... | 03/19/1991 |
| 4990248 | Reverse osmosis apparatus A water filter cartridge includes a reverse osmosis membrane permeator spirally wound on a central winding tube and surrounded by an impermeable barrier layer which is, in turn, surrounded by a spirally wound prefilter. A post-filter is placed centrally w... | 02/05/1991 |
| 4846973 | Membrane tube filter device and disc supports and tension members A liquid flow device includes filter tubes which act as reverse osmosis tubes, ultrafiltration tubes or microfiltration tubes. The device also includes a stack of discs having apertures defining a plurality of elongated passages; an end disc provided at e... | 07/11/1989 |
| 4801381 | Ultrafiltration apparatus An ultrafiltration apparatus in which a plurality of support panels are arranged to form a stack, with panel faces each carrying a membrane for separating a base liquid into two fractions. Apertures are formed in the panels, and the stack is arranged so t... | 01/31/1989 |
| 4784768 | Capillary filter arrangement for sterilization of liquid media Capillary filter arrangement for the sterilization of liquid media comprising two semipermeable capillary fibre bundles (4, 5) which are in flow connection and which are arranged adjacent each other in a single housing (1). The opposite openings of the ho... | 11/15/1988 |
| 4781832 | Hollow-fiber filter module Disclosed is a hollow-fiber filter module having a novel structure in which a large number of hollow fibers for filtration use are disposed in a rectilinear fashion, two exit planes are defined by the opposite open ends of the hollow fibers, a filtrate co... | 11/01/1988 |
| 4732676 | Filter device containing series-connected fibrous tube elements A liquid filter device has a housing and a multiple of closely spaced discs provided in the housing, the discs having holes which are adapted to be in alignment so as to define at least one elongated passage. The discs have separating means separating the... | 03/22/1988 |
| 4710295 | Septic tank filters A filter unit for use in a casing disposed in a septic tank which includes a plurality of stacked disc-dam units to form a cartridge having a longitudinal on each disc-dam unit having a generally circular planar base having a chord edge where the chord ed... | 12/01/1987 |
| 4689152 | Apparatus and method for multistage membrane phase separation The invention relates to an apparatus and process for the separation of at least a portion of one liquid phase from a mixture of immiscible liquid phases using two porous membranes spaced from one another. Each membrane is wetted only by the one liquid ph... | 08/25/1987 |
| 4686037 | Water filter apparatus A water filter has an elongated base with an inlet opening near one end thereof to which is secured an adaptor ring for attachment to a water faucet. A first outlet opening on the base dispenses unfiltered water and there is a channel defined within the b... | 08/11/1987 |
