Abstract: A hard-chromed element, in particular a sieve basket, comprises a base body (1) made from a base material, whereby a surface of the base body (1) is provided with a first hard-chrome layer (3). An indicator layer (2), visually different from the first hard-chrome layer (3) is provided between the first hard-chrome layer (3) and the base body (1). An emergency layer (2, 4) is preferably provided, with an increased wear resistance, such that a new chroming of the corroded element can be prepared unhurriedly.

Abstract: In order to develop a filter material composed of stacked grid members, the invention proposes a filter material consisting of two stacked grid members that have a weld joint between them.

Abstract: The invention relates to a filter cloth intended for a filter which has a variable volume and is based on diaphragm extrusion, particularly for a Larox®-type vertical pressure filter. The filtering properties of the filter cloth (5) are substantially similar in both directions through the cloth since slurry containing liquid and solids is alternately placed on the different sides of the filter cloth. The filter cloth of the invention comprises a middle layer (15) and protective layers (16a, 16b; 17a, 17b) provided on both outer surfaces of the middle layer. The middle layer can have e.g. a woven structure, and the protective layers may be batt fiber layers attached to the middle layer by needling. According to a preferred embodiment of the invention, the protective layers according to the invention are denser than the middle layer.

Abstract: A filter cartridge for use in severe or harsh applications, such as acidic or alkaline environments or hot or cold temperatures. The inventive filter cartridge is constructed of a central, perforated core having reinforcing bands on the ends which is surrounded by a continuous tube of filtration material and bounded by end caps. Rather than using potting compounds or other techniques which are susceptible to severe environments, the end caps are secured to the filter material enrobed core by way of mechanical fasteners, such as blind pop-rivets, screws, or nails.

Abstract: This invention relates generally to composite materials and to devices which may alter fluid parameters. Devices incorporating the composite materials of the invention are used to deliver, remove, and generate, fluid treatment agents, and combinations thereof. These materials and devices are applicable to many different fluid processing situations including drinking water treatment, wastewater treatment, emission treatment, pollution cleanup, and sensing fluid composition. In its more particular aspects, the invention relates to the field of composites that may be widely tailored for many different treatment applications.

Abstract: The present invention relates to a novel polymer as binder for producing activated carbon filters. The polymer of the invention is a polyethylene homopolymer and/or copolymer having a melt flow index (MFI 190/15) of from 1.2 g/10 min to 10 g/10 min, a polydispersity Mw/Mn of from 3 to 30, a bulk density of from 0.05 g/cm3 to 0.5 g/cm3 and a particle size from 5 &mgr;m to 300 &mgr;m.

Abstract: A filter material comprising at least one nonheatsealable ply and at least one heatsealable ply which comprises fibers of synthetic material and contains an adhesion promoter, and also processes for producing same.

Abstract: A composition for blood serum or plasma separation which has improved compatibility between a cyclopentadiene oligomer and a phthalic ester and generates no oily ingredient suspending in the blood serum or plasma after centrifugal separation regardless of the conditions for the centrifugal separation; and a vessel for blood examination which contains the composition. The composition for blood serum or plasma separation comprises: a polycyclic hydrocarbon compound having an unsaturated and/or saturated cyclic structure in the molecule and having a solidifying point or pour point of 0° C. or lower; a cyclopentadiene oligomer; and a phthalic ester.

Abstract: The invention relates to a membrane module in order to filter media which are capable of flowing. Said module incorporates an integrated heat exchanger. According to the invention, the membrane module has the following characteristics: a plurality of rod-shaped, porous, ceramic filter elements (1) (ceramic rods); the ceramic rods (1) are provided with continuous bores (1.1) located parallel to an axis; the ceramic rods are arranged parallel to each other and a lid (3, 4) covers the end thereof: the ceramic rods (1) are sealed at their circumferences against the lid (3, 4); a lid (3) located at one of the membrane modules is provided with an inlet (2.1) for the medium to be treated and a lid (4) located at the other end is provided with an outlet (2.

Abstract: A heated fuel strainer assembly for a fuel tank in a vehicle includes a strainer made of a metal material and adapted to be connected to an inlet of a fuel pump disposed in the fuel tank. The heated fuel strainer assembly also includes a power source connected to the strainer supply power to the strainer to heat the strainer allow fuel to flow through the strainer to the inlet.

Abstract: A fluid contaminant collection system is provided where a filter passively interacts with the fluid to remove contaminants from the fluid. The system includes a wall defining at least a portion of a chamber or passageway. Located within the chamber or passageway is the filter. The filter includes a contaminant removal portion and is located within the chamber or housing to interact with the fluid. During interaction between the fluid and the filter, the fluid passes or washes over the filter and contaminants are removed by the contaminant removal portion from the fluid.

Abstract: A process for removing and recovering undissociated aromatic amines dissolved in aqueous fluid comprises the steps of (a) transferring undissociated aromatic amines from the aqueous fluid to an acidic stripping solution across a membrane wherein the membrane is a non-porous, selectively permeable membrane; (b) regulating the volume of acidic stripping solution employed relative to the volume of aqueous fluid treated so that the total aromatic amine concentration in the acidic stripping solutions, comprising the sum of the dissociated and undissociated aromatic amine concentrations, is above the solubility of the aromatic amine in water; (c) regulating the pH of the acidic stripping solution in contact with the membrane so that the membrane remains selectively permeable; (d) adjusting the pH of the aromatic amine containing acidic stripping solution to a value above the acidic dissociation constant of the aromatic amine and (e) separating the resulting aromatic amine and the acidic stripping solution.

Abstract: This invention relates to filterable composite adsorbents comprising one or more adsorbent components and one or more filtration components, and methods for preparing and using same. More particularly, this invention pertains to filterable composite adsorbents and filterable composite adsorbent products which are suitable for use in filtration applications, and which comprise one or more microparticulate or colloidal adsorbent components selected from the group consisting of silica gel, fumed silica, neutral clay, alkaline clay, zeolite, solid catalyst, alumina, adsorbent polymer, alkaline earth silicate hydrate, and combinations thereof, which bear the property of adsorption, which are intimately bound to one or more functional filtration components selected from the group consisting of biogenic silica (e.g., diatomite, rice hull ash, sponge spicules), natural glass (e.g.

Abstract: A filtering system (10) is provided for filtering working fluid from a machine (12) and includes a cleanable filter (16) and a centrifuge (82) where filter capacity is too low for a permanent filter yet flow rate is too high for a centrifuge. The system transfers the contaminant storage function from the cleanable filter to the centrifuge. A simple effective centrifuge is provided.

Abstract: The aim of the invention is to provide filters with a graduated structure, which are simple to produce and exhibit excellent properties in terms of their permeability to liquids and/or gases. To achieve this, the filters are produced from sinterable material consisting of at least two layers of differing pore size, a first layer having a minimum pore size of 0.005 &mgr;m and consisting of metal oxide or mixtures of metal oxide and the additional layer that is connected to the first layer consisting of a material other than metal oxide. The invention also relates to a method for producing the inventive filters and to the use thereof.

Abstract: The invention provides a separating agent for enantiomeric isomers which has the characteristic ability to identify asymmetry. The separating agent includes as an effective component an aromatic polysaccharide derivative having a C10 or higher alkoxy group as a substituent on the aromatic group.

Abstract: A grease trap filter and grease removal system includes a filter with a horizontal strainer tube and a vertical strainer tube. An elbow connects the cylindrical horizontal and vertical strainer tubes in a generally perpendicular fashion. The filter is removably positioned within a grease trap so that the horizontal strainer tube rests on a bottom of the grease trap and the vertical strainer tube is positioned adjacent an end wall of the grease trap. The wand of a suction device is temporarily placed in communication with an opening formed in the vertical strainer tube of the filter to draw grease through the filter and remove it from the grease trap.

Abstract: A method for removing contaminants from water involves filtering the water through a filtering apparatus which includes a porous media container having an inner chamber which is suitably configured so that water can pass through the chamber and processed straw retained within and suitably within the chamber such that when water passes through the chamber, it also passes through the straw. A method is provided for enhancing the composting (470) of organic matter, e.g., sludge, including the steps of adding processed straw to a compost mixture and digesting said mixture.

Abstract: A process for preparing a graft copolymer membrane is provided comprising exposing a polymeric base film to a dose of ionizing radiation, and then contacting the irradiated base film with an emulsion comprising a fluorostyrenic monomer.

Abstract: A hydrophobic polymer fiber having a cationically charged coating thereon, in which the coating includes a functionalized cationic polymer, such as an epichlorohydrin-functionalized polyamine or an epichlorohydrin-functionalized polyamido-amine, which has been crosslinked by heat. The present invention also provides a fibrous filter which includes hydrophobic polymer fibers having the foregoing cationically charged coating thereon. The present invention further provides a method of preparing a fibrous filter.

Abstract: Systems and methods treat plasma by separating targeted blood cell species such as red blood cells and platelets from the plasma by filtration through hydrophilic polyvinylidene fluoride (PVDF) membranes.

Abstract: Methods and compositions are provided for the isolation of genomic DNA (gDNA) and Bacterial Artificial Chromosomes (BACS) from a target source. Novel nucleic acid trapping membranes are also provided, the membranes composed of oleophobic coated or treated glass and/or acrylic fibers or beads.

Abstract: A method, system and apparatus for performing peritoneal dialysis are provided. To this end, in part, a film is provided. The film includes a layer of a polymer blend having from about 90% to about 99% by weight of a first component containing a styrene and hydrocarbon copolymer and from about 10% to about 1% of a high melt strength polypropylene.

Abstract: The present invention provides for a method of producing an integral multilayered porous membrane by simultaneously co-casting a plurality of polymer solutions onto a support to form a multilayered liquid sheet and immersing the sheet into a liquid coagulation bath to effect phase separation and form a porous membrane. The support can be a temporary support or form an integrated support for the membrane. The plurality of layers may be of the same polymer or different, same concentration or viscosity or different and may be subjected to the same processing conditions or different ones to form unique structures.

Abstract: A microporous asymmetrical membrane formed of one or more layers wherein the “tight” side of the membrane has an “opened” face or otherwise highly-porous reticulated surface is described. The microporous asymmetrical membrane has high throughput and high flux, even when used for filtering viscous materials, such as serum or plasma. The membrane's surface can be formed by ablation or solvation, or in a two or more layered structure, through an appropriate selection of casting dopes.

Abstract: A filter system especially useful in the treatment of waste material, in particular liquid waste material which may include particulate matter therein. The filter system includes a series of filters of progressively finer porosity in order to selectively eliminate particulate (or semi-particulate) matters from a carrier material, typically but not exclusively, of a fluid or liquid nature. The filters are mounted within a housing which includes an outlet port and a plurality of inlet ports, wherein each inlet port includes a check valve.

Abstract: This invention provides a process for making microporous membranes from a polymer solution and the membranes therefrom. A thermal assist, such as heating of the polymer solution can be effected subsequent to shaping the solution, such as by forming a film, tube or hollow fiber of the solution under conditions that do not cause phase separation.. In a preferred embodiment, the formed solution is briefly heated to generate a temperature gradient through the body of the formed solution. The polymer in solution then is precipitated to form a microporous structure. The formation of a wide variety of symmetric and asymmetric structures can be obtained using this process. Higher temperatures and/or longer heating times effected during the heating step result in larger pore sizes and different pore gradients in the final membrane product.

Abstract: The present invention provides new patterned porous substrates and a new method for forming the new patterned porous substrates containing one or more selected patterns which is applicable to all porous structures regardless of their polymeric content, their method of manufacture or their UV absorbing characteristics.

Abstract: A fluid filter includes a housing having an inlet, an outlet, and a center section. A filter element is disposed within the housing. The filter includes a portion made from a polyketone-containing material. The polyketone-containing portion may be the filter housing, the filter element, or both. Where the filter element is formed from a polyketone-containing material, it may be a porous block, a multiplicity of polyketone-containing beads, or a porous polyketone membrane.

Abstract: Solvent-resistant polybenzimidazole membranes, methods of making them and crosslinking them and composite membranes and hollow fiber membrane modules from them are disclosed.

Abstract: A filter aid, in particular for filtering beverages by means of precoated filters, comprises a mixture of exclusively natural components, e.g. cellulose components. The filter aid is made only of sustainable raw materials and can be degraded almost totally in a natural way.

Abstract: A dialyzer for blood treatment includes a semipermeable membrane which is made of a hydrophobic polymer and a hydrophilic polymer, and has a water permeating performance drying of ½ or higher relative to that before drying. The dialyzer has a vitamin B12 clearance not smaller than 135 ml/min per 1.6 m2 or the amount of the hydrophilic polymer eluted from the semipermeable membrane is not higher than 10 ppm. A dialyzer for blood treatment is light-weight, easy to handle, and exhibits a reduced elution of the hydrophilic polymer procedures for producing a dialyzer containing the semipermeable membrane and a process for producing a hollow fiber membrane for use in blood treatment as described.

Abstract: A leukocyte-removing material composed substantially of a polyolefin, the factor of hydrophilicity of the surface of said leukocyte-removing material being less than 40% and not less than 30%.

Abstract: The invention relates to a filter cloth for a filter press and to a method for producing said filter cloth. The inventive filter cloth has a filtration section through which the filtrate reaches a filter element of the filter press, and an edging section which rests against the edge of the filter element. The filtration area is provided with a cloth that differs from that of the edging section. The filtration area is woven from monofil yarns while multifil yarns are woven into the edging section.

Abstract: The present invention is a liquid transport member with significantly improved liquid handling capability, which has at least one bulk region and a wall region that completely circumscribes said bulk region, and which comprises a membrane port region and an open port region, whereby the bulk region has an average fluid permeability kb which is higher than the average fluid permeability kp of the membrane port region.

Abstract: The invention relates to a filter in particular adapted for micro- and ultrafiltration applications. The filter comprises at least one filter element and a central axis. The filter element comprises at least one sintered and isostatically cold pressed non woven metal fiber web and means for sealing.

Abstract: The present invention relates to a filtration-detection device for detecting or quantifying an analyte in a test sample including a filtration device having a first binding material immobilized thereto, wherein the first binding material is capable of binding to a portion of the analyte, and a detection assembly positioned relative to the filtration device to detect or quantify analyte bound to the first binding material. The present invention also relates to methods of using the filtration-detection device.

Abstract: An antibacterial, biodegradable extracting container has a filtering surface formed from a water-permeable woven or knitted fabric formed from fibers comprising, as a principal component, an antibacterial, biodegradable polylactate polymer, and having a thickness of 1 to 100 dtex, wherein, preferably, the filtering surface is formed from the woven fabric having a cover factor K of 1600 to 6400, determined in accordance the following equation:

Abstract: The element consists of an outer skin, in which to house the actual filtration fiber. The skin is of sufficient integrity to confine the filtration fiber, not deteriorate, and maintain pliability, with a working temperature range of thirty-five degrees through Four hundred degrees Fahrenheit, and five to thirty pounds per square inch pressure. The filtration fiber(s) can be manipulated to perform specific tasks, for instance: the regulation or removal of water within an ethylene glycol system, or, with introduction of water the micronal capacity may be regulated.

Abstract: Disclosed is a resinous filter for an ink-jet recording apparatus, which is obtained by a process comprising: adding common salt to a melt of a resin comprising at least one member selected from the group consisting of polyethylenes having a number-average molecular weight of from 30,000 to 80,000 and polypropylenes having a number-average molecular weight of from 50,000 to 100,000; kneading the resultant mixture to prepare a melt to be molded; molding the melt to be molded to obtain a molding; and washing the molding with water to remove the salt therefrom.

Abstract: A nanoporous tubular filter having a membrane comprising a network of generally branched pores formed by anodization of a section of metal tubing. The network extends from an inner wall of the filter to and through an outer exposed wall area of the membrane, and has a first layer of pores with a diameter greater than that of pores of an adjacent second layer. Further, the network is integral with an outer support matrix having been formed of an outer wall of the section of tubing by removing selected portions of the outer wall, thus leaving the exposed wall area of the membrane. The outer support matrix corresponds with a patterned area formed of an external-coat applied to the tubing's outer wall. An electroplating of a magnetostrictive material deposited on the outer support matrix or on an interior surface is adapted for use as a diffusion ON-OFF switch.

Abstract: A novel microporous membrane comprising a hot-melt adhesive and an engineering plastics, the methods of preparing such microporous membrane and the uses of the microporous membrane in, e.g., batteries, super capacitors, fuel cells, sensors, electrochromic devices or the like.

Abstract: This invention relates to advanced composite filtration media comprising a functional filtration component and a matrix component, and methods for preparing and using same. More particularly, this invention pertains to advanced composite filtration media and advanced composite filtration media products comprised of a functional filtration component, such as a biogenic silica product (e.g., diatomite), a natural glass product (e.g., expanded perlite), or a natural or synthetic crystalline mineral (e.g., titanium dioxide), which is thermally sintered to a matrix component, such as an engineering polymer (e.g., glasses, natural or synthetic crystalline minerals, thermoplastics, and metals) or a suitable natural material (e.g., rice hull ash, sponge spicules) that has a softening temperature below that of the functional filtration component. This invention also relates to advanced composite media and advanced composite media products, generally, which are also useful in non-filtration applications.

Abstract: A polymer-micelle complex is disclosed. The polymer-micelle complex includes a micelle having a negative charge. The negatively charged micelle is bound electrostatically to a polymer bearing a positive charge. The complex can be in turn electrostatically bound to a siliceous material so that the complex is immobilized on the siliceous material. In addition, a composition comprising a negatively charged micelle, a positively charged polymer, and an aqueous carrier is disclosed. The aqueous carrier can exhibit salinity. In the composition, the micelle and polymer can electrostatically interact so as to form a polymer-micelle complex (which can either be soluble in the aqueous carrier or in the form of a precipitate or coacervate), or, alternatively, the polymer and micelle can remain separate such that a complex is not formed therebetween.

Abstract: A hollow fiber membrane made of an ethylene-vinyl alcohol polymer, comprises a dense layer existing in the inner surface and a porous layer existing in the layer other than the dense layer, wherein the hollow fiber membrane has a porosity of 60 to 90%, an overall mass transfer coefficient for myoglobin in a water-based system of not less than 0.003 cm/min., and a rejection rate for albumin in a bovine blood system of not less than 97%. The EVA hollow fiber membrane is useful for hemopurification membranes such as hemodialysis membranes, hemodiafiltration membranes, hemofiltration membranes and continuous hemofiltration membranes, and a process for producing the same.

Abstract: A hydrophilic membrane that includes a hydrophobic polymer and a water-soluble polymer-metal complex is provided. This membrane is made by heating a mixture of a hydrophobic polymer, a metal compound, and a water-soluble polymer. The water-soluble polymer forms complexes with the metal compound and homogeneously entangles with the dissolved hydrophobic polymer to form a viscous dope. The dope is extruded through an annular orifice to form a hollow fiber. The fiber is put in an environment having a controlled humidity so that it becomes partially solidified, and then, the fiber is put in a coagulation bath. The hollow fiber is formed by phase inversion in the coagulation bath and is collected using a take-up wheel that is partially immersed in a leaching bath.

Abstract: The invention relates to a filter element with improved corrosion and heat resistance and structural properties to be used in filtering solids containing material in order to achieve a filter cake of solid material on at least one external surface area of the filter element. According to the invention, at least one part of the external surface area of the filter element separated from the external surface area for forming the filter cake is provided with at least one corrosion and heat resistant polymer-based material.

Abstract: Multi-layer microfluidic devices incorporating a filter element are provided. A filter element is compressively restrained between device layers, such that the compression promotes a tight seal between device layers and resists fluid leakage around the filter element.

Abstract: According to the present invention there is provided a ceramic foam filter for molten metal filtration comprising a preferably substantially flat inlet portion, an intermediate portion and an outlet portion that incorporates an undulating surface defining peaks and valleys. Making the outlet portion or surface irregular as described herein provides paths for entrapped air to escape or vent during start-up, thereby significantly reducing or eliminating the need for potentially harmful corrective action, such as rapping, to achieve a rapid filter start-up.

Abstract: The invention relates to an adjuvant for the filtration of liquids ensuring the elimination of contaminating microorganisms, which is constituted by polylactam powder obtained by polymerisation of monocyclic lactam by anionic catalysis in an liquid medium. It is particularly intended for integration in a drinkable water preparation process.