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| Number | Title | Issue Date |
| 8061531 | Membrane bags with seamless membrane substance, uses thereof and filtration units therewith A membrane bag comprising a volume for permeate collection, wherein the volume is completely enclosed in seamless membrane substance; a filtration unit comprising at least one above-described seamless membrane bag; the use of at least one above-described seamless me... | 11/22/2011 |
| 7997424 | Flat membrane element and manufacturing method thereof Even when a membrane sheet contains an inorganic material, the membrane sheet and a support plate are properly deposited by a laser emission. In a manufacturing method of a flat membrane element lapping a membrane sheet performing solid-liquid separation on a suppor... | 08/16/2011 |
| 7556156 | Sector for vacuum rotating filters and similars A filtering sector (1) provided with two generating elements (2), obtained preferentially of polymeric material highly resistant to abrasion of mining products finely dispersed in the liquid filtrate, drained through the bi-foliar permeable film elemen... | 07/07/2009 |
| 7389883 | Filter cartridge A filter cartridge which comprises a filter pack (3) formed by a flat filtering medium, a tubular sheath (2) with a perforated wall, surrounding the filtering pack, and two respective end caps (5) having a first disc (16) and a second dis... | 06/24/2008 |
| 7371267 | Wire filter cage An improved filter support structure for supporting filter media. The support structure includes two sections removably coupled together with an improved coupling assembly. The first section has a cross section presenting a first width spaced apart from a second wid... | 05/13/2008 |
| 7357861 | Curb inlet filter A curb inlet filter for filtering out sediments and the like flowing into a curb inlet, includes a filter body, including a water permeable, substantially rigid, elongated frame having an upstream side and a downstream side thereof, and an elongated filter cover for... | 04/15/2008 |
| 7357866 | Filter module, installation kit for a filter module and a filter device The invention concerns a module for filtering media. More particularly, the invention concerns a module for filtering fluids and including one or more filter cells stacked on top of one another. The invention also relates to an installation set for the installation ... | 04/15/2008 |
| 7314556 | Filter disc with panel sectors A panel sector, for a disc filter for separation of liquids from a suspension, includes front and back filter panel assemblies, a sector assembly for mounting the front and back filter panel assemblies, and a top cap for retaining the filter panel assemblies within ... | 01/01/2008 |
| 7311831 | Filtration membrane and method of making same A filtration membrane and method of making the same wherein the filtration membrane comprises obstructions and/or spacers. ... | 12/25/2007 |
| 7282148 | Porous silicon composite structure as large filtration array A novel asymmetric filter membrane, and process for making is disclosed in several exemplary versions. The membrane structure is physically robust and suitable for use in a wide variety of applications. The support membrane is may be comprised of material such as a ... | 10/16/2007 |
| 7279095 | Fuel supply device Fuel supply device (10) may comprise fuel pump (20) and suction filter (40) attached to a fuel intake port (36) of fuel pump (20). Suction filter (40) may have a sheet-shaped filter body (38) and an attaching member (... | 10/09/2007 |
| 7279215 | Membrane modules and integrated membrane cassettes The invention features integrated membrane assemblies for selectively transferring a constituent to or from a fluid. The assemblies include two or more flat sheet membrane elements and at least one common manifold connected to the interior regions of the membrane el... | 10/09/2007 |
| 7276157 | Swimming pool strainer A swimming pool strainer formed of a substantially U-shaped housing including an end panel with a pair of spaced side panels perpendicularly extending therefrom. Positioned between the side panels are a plurality of spacer dowels that enhance the structural integrit... | 10/02/2007 |
| 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 from a filterable material, whereby, in particular, particles can be fi... | 09/04/2007 |
| 7261817 | Filter module and device for static filtration of fluids with such a module The invention relates to a filter module and an apparatus for the static filtration of liquids using filter cells having deep bed filter layers and using spacer layers. According to the invention the filter module has a stack of n filter cells and n+1 spacer layers ... | 08/28/2007 |
| 7228848 | Self positioning filter assembly A filter assembly having a filter element that is self positioning into a preferential filtering position upon insertion into a tank which will contain the medium to be filtered (e.g., gasoline, oil, etc.). ... | 06/12/2007 |
| 7178676 | Graded particle-size retention filter medium for fluid filtration unit with improved edge seal A fluid filtration unit having two or more filter medium layers and/or zones, at least one of the layers/zones having a different particle retention capability disposed on each side of a non-filtering separator element. The filter medium are presently preferably pos... | 02/20/2007 |
| 7179377 | Filter for sludge filtration A sludge filter is comprised of a mesh filter media secured to a support net. The support net includes a front surface adjacent the filter media and a rear surface opposite the filter media, the rear surface having a plurality of outwardly extending nodes to define ... | 02/20/2007 |
| 7163622 | Filter The invention refers to a filter 1 with several rotating filter discs 3 mounted on a shaft 2 and which are provided with a porous filter medium. It is characterized by elastomer elements (8, 8′) being mounted on the shaft (2) as ... | 01/16/2007 |
| 7163625 | Filtration device The present invention provides a filtration device. The invention employs filter media wrapped into spirals about an apertured core. Fluid may flow radially inward or radially outward during filtration. Embodiments using multiple filter media and embodiments achievi... | 01/16/2007 |
| 7156997 | Package assembly for piperazine-based membranes A package assembly comprising a sealed water-impermeable bag enclosing: a spiral wound filtration element comprising a piperazine-based membrane, and an aqueous solution comprises a substantially non-oxidizable buffer having capacity to sequester at least 0.0025 mol... | 01/02/2007 |
| 7153425 | Process and filter for filtering a slurry The present invention comprises a process for filtering a slurry and a filter cartridge construction for filtering a slurry having a filtration medium formed of a depth filter such as a cylindrical seamless fibrous depth filter comprising a nonwoven fibrous mass, wo... | 12/26/2006 |
| 7143899 | Filter element and method for manufacturing the plates thereof A filter element for pulp screens comprising at least two plates separated by a distance from each other, wherein one plate has a number of projections formed thereon, and the projections being directed towards the other plate. The plates are attached to each other ... | 12/05/2006 |
| 7141198 | Method for the manufacture of a composite filter plate A method is disclosed for making a substantially flat filter plate comprising a substantially flat thermoplastic polymer frame and substantially flat filter material seated fixedly therein. The method is characterized by its reduced exposure of the filter material t... | 11/28/2006 |
| 7141168 | Porous polyolefin membrane The purpose of the invention is to provide a porous polyolefin membrane consistent with a simple composition that may be characterized by a small pore diameter and a high porosity by simplifying the manufacturing process to facilitate uniform dispersion of the compo... | 11/28/2006 |
| 7094297 | Methods for making screen assemblies A method for making a screen assembly for use in a vibratory separator, the method, in certain aspects, including producing a heated first screen assembly; cooling the first screen assembly while a second heated screen assembly is being made; and cooling the second ... | 08/22/2006 |
| 7090772 | Filter bag assembly A filter bag assembly includes an outer bag having an open end, a closed end opposite the open end, and a longitudinal axis. The open end of the outer bag is sized and shaped for receiving liquid to be filtered. A filter member is loosely mounted in the outer bag an... | 08/15/2006 |
| 7087160 | Outside-in flow engine and transmission filter and method A suction-side transmission or engine filter includes a filter bag assembly having an outlet portion and a media bag enclosing an inner support structure, the filter bag assembly is contained at least partially within a housing having an outlet port. The outlet port... | 08/08/2006 |
| 7060181 | Dual density filter cartridge The invention relates to aquarium filters providing improved water filtration without accelerated clogging. The present invention also relates to methods of using such filters. ... | 06/13/2006 |
| 7018547 | Filtration covering apparatus A filtration covering apparatus for use covering diatomaceous earth filter grids for swimming pools. The filtration covering apparatus has a replaceable cover having two closed sides, a bottom opening, and a top opening. The replaceable cover is curved shaped to acc... | 03/28/2006 |
| 6986428 | Fluid separation membrane module The present invention includes a membrane construction for selectively transferring a constituent to or from a fluid. The membrane construction includes a multi-layer fluid impermeable support sheet having a plurality of supports on at least one side of the support ... | 01/17/2006 |
| 6959817 | Cooling makeup water intake cartridge filter for industry An industrial, e.g. power plant cooling, water extraction framed cartridge filter system is disclosed with a holed fabric type medium to filter debris from the power plant cooling water. The fabric type filter medium is comprised a one or more strength meshes of nyl... | 11/01/2005 |
| 6941652 | Methods of fabricating a thin-wall expandable well screen assembly An expandable well screen has a desirable thin-wall construction together with a simplified fabrication method. In fabricating the screen, a flexible sheet of metal mesh filter media is diffusion bonded to an inner side of a perforated metal sheet which is then defo... | 09/13/2005 |
| 6942105 | In-line filtration for a particle-based electrochemical power system A system for filtering particles within a multiphase fluid that comprises a particulate phase is disclosed. The system comprises a first plurality of substantially parallel, substantially planar thin slabs separated by a predetermined distance to retain particles ha... | 09/13/2005 |
| 6939466 | Graded particle-size retention filter medium for fluid filtration unit with improved edge seal A fluid filtration unit having two or more filter medium layers and/or zones, at least one of the layers/zones having a different particle retention capability disposed on each side of a non-filtering separator element. The filter medium are presently preferably pos... | 09/06/2005 |
| 6932883 | Screens for vibratory separators A method for making a screen assembly for a vibratory separator, the method including, in at least certain aspects, gluing together with glue at least two layers of fine screening material, allowing the glue to set, preheating the glued together at least two layers ... | 08/23/2005 |
| 6918951 | Disc-type air filters An air filter includes a stack of filter discs formed with contacting faces having surface formations defining filtering passageways between adjacent discs for removing solid particles from the air passing through the stack. The filter discs in the stack further inc... | 07/19/2005 |
| 6908550 | Filter bag A filter bag for a pool cleaning device includes a bag structure, formed of nylon mesh material, and a discharge opening, formed by a zipper. The zipper allows for temporary access to the interior chamber of the bag by opening the zipper. ... | 06/21/2005 |
| 6905529 | Wire Filter cage An improved filter support structure for supporting filter media. The support structure includes two sections removably coupled together with an improved coupling assembly. The first section has a cross section presenting a first width spaced apart from a second wid... | 06/14/2005 |
| 6887378 | Handles for lenticular filter cartridge A filter cartridge assembly, and method for constructing the same, wherein the assembly has at least two axially adjacent filter cells separated by a spacer ring and a lifting means having a mounting portion with an opening formed therein for surrounding the outer p... | 05/03/2005 |
