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| Number | Title | Issue Date |
| 8002119 | Control of the thickening of silicate-containing aqueous systems A method for controlling the thickening of aqueous systems comprising silicates, which comprises adding to the aqueous system at least one copolymer of a mean molecular weight Mw of at least 3000 g/mol to at most 60 000 g/mol and the copolymer being made up essentia... | 08/23/2011 |
| 7721898 | Coating material for leukocyte removal filter and the filter It is intended to provide a polymer for coating a leukocyte removal filter material which is excellent in the capability of removing leukocytes. It is further intended to provide a filter whereby both of leukocytes and platelets can be highly efficiently removed fro... | 05/25/2010 |
| 7638053 | Poly(meth)acrylate membranes for separation of hydrocarbon mixtures The separation of hydrocarbon mixtures comprising a polymerizable vinyl containing polyester of the formula I: Each R and R2 is independently a C6-C20 aromatic residue or a C1-C | 12/29/2009 |
| 7628917 | Porous composite membrane and method for making the same The invention provides composite porous membranes comprising a porous hydrophobic substrate coated with difunctional surface-modifying molecules. The difunctional surface-modifying molecules provide a hydrophilic surface without forming branches of interconnected po... | 12/08/2009 |
| 7449111 | Resins containing ionic or ionizable groups with small domain sizes and improved conductivity A polymer or blend is described which contains at least one acrylic resin or vinyl resin having at least one ionic or ionizable group, and at least one additional polymer. The polymer has small domain sizes with respect to the acrylic resin or vinyl resin. The polym... | 11/11/2008 |
| 7361277 | Biological fluid filter and system A filter device (100) comprising a filter (10) for producing a leukocyte-depleted plasma-rich fluid is disclosed. ... | 04/22/2008 |
| 7300022 | Modified membranes A porous polymeric membrane formed from a blend of a polymeric membrane forming material, such as polyvinylidene fluoride or polysulfone and a polymeric reactivity modifying agent adapted to modify the surface active properties of the porous polymeric membrane. The ... | 11/27/2007 |
| 7270850 | Mesoporous permeation layers for use on active electronic matrix devices The present invention provides improved synthetic polymer hydrogel permeation layers for use on active electronic matrix devices for biological assays. The present invention includes methods for forming a permeation layer on an array of microelectrodes including the... | 09/18/2007 |
| 7264859 | Lubricious coating for medical devices Medical devices having at least a portion thereof coated with a lubricious polymer are disclosed. The lubricious polymer can be, for instance, a hydrogel polymer, such as a quaternary amine acrylate polymer. To bond the lubricious polymer to the surface of the medic... | 09/04/2007 |
| 7247370 | Asymmetric gel-filled microporous membranes The invention provides asymmetric membranes composed of a microporous substrate whose pores contain a crosslinked gel, the density of the crosslinked gel being greater at or adjacent to one major surface of the membrane than the density at the other major surface. T... | 07/24/2007 |
| 7223341 | Positively charged membrane The present invention provides a positively charged microporous membrane having a protein binding capacity of about 25 mg/ml or greater comprising a hydrophilic porous substrate and a crosslinked coating that provides a fixed positive charge to the membrane. The pre... | 05/29/2007 |
| 7195923 | Ratiometric determination of glycated protein The present invention provides methods for determining a ratio of an amount of a glycated form of a protein to a total amount of the protein in a sample containing the glycated protein, the glycosylated protein, or the glycoprotein. The method incorporates lateral f... | 03/27/2007 |
| 7189322 | Charged membrane The present invention provides a hydrophilic charged microporous membrane comprising a porous hydrophobic substrate and a coating comprising a charge-providing agent. The present invention further provides a hydrophilic charged membrane comprising a porous hydrophob... | 03/13/2007 |
| 7172075 | Defect free composite membranes, method for producing said membranes and use of the same A defect free semipermeable composite membrane having outstanding integrity and high water permeability is provided. Said composite membrane comprises an inside support layer to provide sufficient mechanical strength, an outside barrier layer to provide selective se... | 02/06/2007 |
| 7165682 | Defect free composite membranes, method for producing said membranes and use of the same A defect free semipermeable composite membrane having excellent integrity and high water permeability is provided. Said composite membrane comprises an inside support layer to provide sufficient mechanical strength; an outside barrier layer to provide selective sepa... | 01/23/2007 |
| 7160464 | Methods for removal, purification, and concentration of viruses and methods of therapy based thereupon The invention is based on the discovery that certain membranes, which include side chains or molecular “brushes” having, for example, tertiary amino functional groups, can be used as highly effective filters to capture viruses/virus particles from liquids withou... | 01/09/2007 |
| 7135230 | Functional particle and preparing/plasma-treating method of the same At least one of a hollow particle 14, a porous particle 24, and a solid particle 34 having the pores 18, 28, 38 on the surface thereof is subjected to plasma irradiation under a reduced pressure while changing plasma irradiation intensity... | 11/14/2006 |
| 7132049 | Negatively charged membrane The present invention provides, in certain embodiments, a negatively charged microporous membrane comprising a porous substrate and a crosslinked coating having fixed negative charges. The crosslinked coating can be prepared, e.g., from a polymerized composition com... | 11/07/2006 |
| 7094349 | Organic porous article having selective adsorption ability for boron, and boron removing module and ultra-pure water production apparatus using the same An organic porous material having selective adsorption ability for boron, characterized in that it has an open cell structure comprising macro pores jointed to one another and, formed within the wall of the macro pore, meso pores having a pore diameter of 0.02 to 20... | 08/22/2006 |
| 7094347 | Positively charged membrane The present invention provides a positively charged microporous membrane having a protein binding capacity of about 25 mg/ml or greater comprising a hydrophilic porous substrate and a crosslinked coating that provides a fixed positive charge to the membrane. The pre... | 08/22/2006 |
| 7081273 | Method for producing defect free composite membranes A defect free semipermeable composite membrane having excellent integrity and high water permeability is provided. Said composite membrane comprises an inside support layer to provide sufficient mechanical strength; an outside barrier layer to provide selective sepa... | 07/25/2006 |
| 7073671 | Microporous membrane substrate having caustic stable, low protein binding surface The present invention provides porous media or membranes having a surface coating that includes a first coating of a cross-linked terpolymer and a second coating comprising a copolymer or a terpolymer modified with a hydrophilic or hydrophobic functional group which... | 07/11/2006 |
| 7067058 | Hydrophilic membrane and process for making the same A process for imparting hydrophilic properties to a polymeric membrane by exposing the membrane to an acrylate monomer containing hydrophilic segments, such as ethylene oxide, and a hydrophilic functional group, a diacrylate monomer containing hydrophilic functional... | 06/27/2006 |
| 7056726 | membrane for encapsulation chamber of cells producing at least a biologically active substance and bioartificial organ comprising same The invention concerns a semipermeable chamber for encapsulation of cells producing at least a biological substance of interest, characterised in that it consists of a porous polycarbonate biocompatible film modified at the surface by generated polar sites and cover... | 06/06/2006 |
| 6994824 | Artificial cardiopulmonary circuit system To provide an artificial cardiopulmonary circuit system having high heat resistance and excellent blood compatibility. The artificial cardiopulmonary circuit system includes a hollow fiber membrane oxygenator including a plurality of porous hollow fiber membranes fo... | 02/07/2006 |
| 6966992 | Method of purification of molecules using unbranched terminal alkyldiols The current invention provides methods for molecule purification by RP-LC and RP-HPLC that uses unbranched terminal alkyldiols as eluting solvents. In particular, the present invention purifies molecules, particularly proteins and peptides, on reverse phase liquid c... | 11/22/2005 |
| 6960298 | Mesoporous permeation layers for use on active electronic matrix devices The present invention provides improved synthetic polymer hydrogel permeation layers for use on active electronic matrix devices for biological assays. The permeation layers have a defined porous character, with mesopores in a size range between about 100 nanometers... | 11/01/2005 |
| 6945411 | Biological fluid filter and system A filter for processing a biological fluid is disclosed comprising at least two filter elements wherein the surface of one filter element is substantially non-hydroxylated and has a nitrogen-to-oxygen ratio in the range of from at least 0.01 to less than about 1.00,... | 09/20/2005 |
| 6875354 | Cast membrane structures for sample preparation A method for casting-in-place composite and/or non-filled structures which are useful as sorptive or reactive media or for size-based separations. Any particular housing size or configuration can be used, and the inclusion of a large amount of adsorptive particles i... | 04/05/2005 |
| 6861001 | Methods for removal, purification, and concentration of viruses, and methods of therapy based thereupon The invention is based on the discovery that certain membranes, which include side chains or molecular “brushes” having, for example, tertiary amino functional groups, can be used as highly effective filters to capture viruses/virus particles from liquids withou... | 03/01/2005 |
| 6860393 | Filter device and filter element comprising at least one negatively charged membrane The present invention provides, in certain embodiments, a negatively charged microporous membrane comprising a porous substrate and a crosslinked coating having fixed negative charges. The crosslinked coating can be prepared, e.g., from a polymerized composition com... | 03/01/2005 |
| 6854603 | Porous membrane structure and method A method of treating a membrane comprises the steps of providing a membrane with surfaces that define a plurality of pores extending through the membrane. Providing a dispersion of oleophobic fluoropolymer solids. Stabilizing the dispersion with a stabilizing agent.... | 02/15/2005 |
| 6783937 | Negatively charged membrane The present invention provides, in certain embodiments, a negatively charged microporous membrane comprising a porous substrate and a crosslinked coating having fixed negative charges. The crosslinked coating can be prepared, e.g., from a polymerized composition com... | 08/31/2004 |
| 6780323 | Polymer based permeable membrane for removal of ions Molecularly imprinted polymer membranes for selectively collecting phosphate, nitrate and ferric ions are disclosed, prepared by copolymerizing a matrix monomer, cross-linking agent, ion imprinting complex, permeability agent and polymerization initiator, after whic... | 08/24/2004 |
| 6663775 | Charge mosaic membrane, its production process, method of its use, and apparatus provided with the same A charge mosaic membrane having excellent selective permeability comprises a cationic polymer component, an anionic polymer component and a matrix component. Both of the cationic polymer component and the anionic polymer component are crosslinked particul... | 12/16/2003 |
| 6652751 | Intrinsically bacteriostatic membranes and systems for water purification The invention disclosed relates to intrinsically bacteriostatic synthetic polymer membranes, and to process for the manufacture thereof. In one embodiment, bacteriostatic metal ions are attached to a surface of a preformed synthetic polymer membrane by st... | 11/25/2003 |
| 6569225 | Breathable barrier films containing cavated fillers A breathable, stretch-thinned barrier film having improved strength, processability and/or breathability is formed from a mixture of a thermoplastic polymer and cavated filler particles such as cyclodextrin. The cavated filler particles provide the film w... | 05/27/2003 |
| 6558546 | pH dependent membrane diffusion A pore plugging material, for pH dependent membrane diffusion, in which cyclic olefins having phosphazene-functional moieties provide predictable erosion properties when used to plug pores in separation barriers and other porous membranes. Specific proper... | 05/06/2003 |
| 6527955 | Heat-activatable microporous membrane and its uses in batteries 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... | 03/04/2003 |
| 6510949 | Filter material having adjustable wettability and method for its manufacture The invention concerns a filter material characterized in that it is impregnated with an amphiphilic substance or with a hydrophilic and a hydrophobic substance to control the water wettability and water absorption.... | 01/28/2003 |
