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| Number | Title | Issue Date |
| 7438193 | Nanoporous membrane and method of fabricating the same Provided are a nanoporous membrane and a method of fabricating the same. The nanoporous membrane includes a support, and a separation layer including a plurality of nano-sized pores at a density of 1010/cm2 or greater and a matrix. The nanoporo... | 10/21/2008 |
| 7316919 | Composite materials comprising supported porous gels This invention relates to a composite material that comprises a support member that has a plurality of pores extending through the support member and, located in the pores of the support member, and filling the pores of the support member, a macroporous cross-linked... | 01/08/2008 |
| 7294393 | Sheet material and wiring board In a sheet material (1), a bonding layer (2) is provided, and then a high-strength layer (3) is laminated on the bonding layer (2). The bonding layer (2) is made of an epoxy resin being a thermosetting material. The high-strength l... | 11/13/2007 |
| 7247191 | Crosslinked and crosslinkable hollow fiber membrane and method of making same utility A composition of and a method of making high performance hollow fiber membranes is described. The membranes have a high resistance to plasticization by use of a predetermined amount of crosslinking. The preferred polymer material for the membrane is a polyimide poly... | 07/24/2007 |
| 7229553 | Method for producing a membrane made of bridged polymer and a fuel cell Method for producing a membrane made of bridged polymer and a fuel cell. The present invention relates to a membrane comprising a bridged polymer which is produced by a selected process. The membrane of the invention displays a significantly improved fracture toughn... | 06/12/2007 |
| 7189321 | Fluid treatment module having hollow membranes The invention relates to a hollow membrane (11) comprising two support layers arranged one above the other forming a space between them and a plurality of capillary tubes arranged between the support layers forming capillary channels for the flow of a first f... | 03/13/2007 |
| 7160356 | Dithiolene functionalized polymer membrane for olefin/paraffin separation A polymeric composite may be used for forming fluid separation membranes. The membranes may be formed from polyimide, polyamide or poly (pyrrolone-imide) materials. Polyamides may be formed by the condensation of a tetraamine, a tetraacid, and a diamine. Polyimides ... | 01/09/2007 |
| 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 |
| 7077961 | Apparatus for extracorporeal blood or plasma treatment comprising a wet semi-permeable membrane and methods for making the same The present invention relates to a device for the extracorporeal treatment of blood or plasma, comprising two compartments, one compartment intended for circulating blood or plasma, and one compartment intended for circulating spent liquid, separated by a wet semi-p... | 07/18/2006 |
| 7074256 | Phosphazene membranes for gas separations A polyphosphazene having a glass transition temperature (“Tg”) of approximately −20° C. or less. The polyphosphazene has at least one pendant group attached to a backbone of the polyphosphazene, wherein the pendant group has no halogen atoms. In ad... | 07/11/2006 |
| 7015273 | Polymer complex coating agents, method for the production and use thereof The invention relates to water-dilutable binding agents and coating agents with particularly quick drying surfaces. The invention also relates to a method for the production and use thereof. The water-dilutable binding agents are based on polymer dispersions, which ... | 03/21/2006 |
| 7011694 | CO-selective membranes containing amino groups Novel compositions suitable for fabrication of CO2-selective membranes are disclosed. In one aspect, the present invention is directed to compositions comprising polyimide/polyamine blends and copolymers, and to compositions comprising interfacially polym... | 03/14/2006 |
| 6994788 | Sulfonated aromatic polymers, membrane containing said polymers and a method for production and use of the same A sulfonated aromatic polymer comprising the repeating structural unit of the formula I —O—Ar1(SO3R)n—C(CF3)2—Ar1(SO3R)n—O—Ar2—(X—Ar2 | 02/07/2006 |
| 6986844 | Solvent-resistant microporous polybenzimidazole membranes and modules Solvent-resistant polybenzimidazole membranes, methods of making them and crosslinking them and composite membranes and hollow fiber membrane modules from them are disclosed. ... | 01/17/2006 |
| 6932859 | Crosslinked and crosslinkable hollow fiber membrane and method of making same A composition of and a method of making high performance hollow fiber membranes is described. The membranes have a high resistance to plasticization by use of a predetermined amount of crosslinking. The preferred polymer material for the membrane is a polyimide poly... | 08/23/2005 |
| 6841068 | Domestic nanofiltration membrane based water purifier without storage tank A domestic nanofiltration membrane based water purifier without a storage tank. The water purifier according to the present invention uses a nanofiltration membrane filter as a main filtering section and does not have a storage tank for containment of purified water... | 01/11/2005 |
| 6814865 | Ion exchange membranes, methods and processes for production thereof and uses in specific applications The invention includes novel anion exchange membranes formed by in situ polymerization of at least one monomer, polymer or copolymer on a woven support membrane and their methods of formation. The woven support membrane is preferably a woven PVC membrane. The invent... | 11/09/2004 |
| 6746595 | Ammonium ionophore, an ammonium ion selective matrix, an ammonium ion-selective sensor, and a method for detecting ammonium ions in a fluid sample An ammonium selective ionophore for use in ion selective electrodes. ... | 06/08/2004 |
| 6726840 | Membranes of (per)fluorinated amorphous polymers Porous membranes of (per)fluorinated amorphous polymers having a porosity in the range 5-500 nm, preferably 20-100 nm, measured by an atomic force electronic microscope; the membrane pore average size distribution being narrow, about 80%-90% of the pores have a size... | 04/27/2004 |
| 6649058 | Hollow membranes with capillary tubes, fluid treatment modules that use them and methods of manufacturing them The invention relates to a hollow membrane (11) comprising two support layers arranged one above the other forming a space between them and a plurality of capillary tubes arranged between the support layers forming capillary channels for the flow of a fir... | 11/18/2003 |
| 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 |
| 6540915 | Antimicrobial semi-permeable membranes Cast semi-permeable membranes made from synthetic polymer used in reverse osmosis, ultrafiltration and microfiltration are treated with a non-leaching antimicrobial agent to prevent its bio-fouling and bacterial breakthrough. The semi-permeable membranes ... | 04/01/2003 |
| 6521130 | Process for producing composite semipermeable membrane When forming a separating functional layer containing crosslinked polyamide, by carrying this out in the presence of 1) carboxylic acid ester with a total of 8 or more carbons, or 2) carboxylic acid, it is possible to provide a composite semipermeable mem... | 02/18/2003 |
| 6508921 | Lithium ion-selective electrode for clinical applications A lithium ion-selective membrane that favors the bonding of lithium and depresses sodium interference is invented by a charge balance approach. A lithium ion-selective electrode (Li-ISE) having the membrane of this invention demonstrates a fast kinetic re... | 01/21/2003 |
| 6258271 | Hollow membranes with capillary tubes The invention relates to a hollow membrane (11) comprising two support layers arranged one above the other forming a space between them and a plurality of capillary tubes arranged between the support layers forming capillary channels for the flow of a fir... | 07/10/2001 |
| 6156202 | Conducting polymer membrane and a process for the preparation of the same membrane As per the World Health organization (WHO) requirement, the water for drinking purposes should be 100% virus free. This invention reports a polymer impregnated porous substrate membrane and method for the preparation of said membrane for capturing viruses... | 12/05/2000 |
| 6083401 | Separative membrane and method for using this membrane The present invention concerns a separative membrane, as well as a separation device containing this membrane, and a method for using this device. The membrane of the present invention comprises a support, the hydrophobicity of one of whose faces has been... | 07/04/2000 |
| 6017455 | Porous membrane The present invention provides an anisotropically porous membrane which is obtained according to a wet process, which comprises a substantially non-sulfonated aromatic polyether ketone having a crystallinity of 10 percent by weight or higher, and which ha... | 01/25/2000 |
| 5997741 | Process for preparing a polyether ether ketone membrane The present invention is directed to a process for manufacturing a polyether ether ketone (PEEK) membrane which may be used for ultrafiltration or microfiltration at high temperatures. In this process for manufacturing a non-sulfonated PEEK membrane which... | 12/07/1999 |
| 5859182 | Fluorine-containing polyquinazolone polymer and separation membrane using the same A fluorine-containing polyquinazolone polymer having a bisquinazolone unit represented by Formula 1 as the repeating unit is used for a gas separation membrane so that great chemical and heat resistance is provided. The membrane also has great permeabilit... | 01/12/1999 |
| 5847075 | Polymer and porous structure A polymer characterised by the presence of ylid linkages in the main polymer chain of formula (A) where the dashed line represents the remainder of a ring system for which the N+ provides a heteroatom, and E is a strongly electron withdrawing group. Prefe... | 12/08/1998 |
| 5776324 | Electrochemical biosensors An electrochemical biosensor for determining the level of a target chemical in a biological fluid includes an electrochemical system including a enzyme substrate which reacts with the target chemical to yield a system signal related to the concentration i... | 07/07/1998 |
| 5651931 | Method of making a biocompatible filter A method for making a biocompatible filter whereby a biocompatible powder is sintered to form a disk-shaped filter. The biocompatible powder is first sized to obtain a preselected average particle size. Next, the powder is introduced to a die in which the... | 07/29/1997 |
| 5605993 | Derivatives of polyethers and of pentacyclic heterocycles, their polymers and their applications, particularly to the complexing of metal ions It concerns a monomer, a polymer obtained from the monomer and a process for obtaining the said polymer. The monomer consists of a polyether containing at least 3 ether units and pyrrole or thiophene units bonded to the ends of the chains of this polyethe... | 02/25/1997 |
| 5565102 | Process for purifying organic synthesis products The novel process for working up solutions or suspensions of organic synthesis products having a pH value of | 10/15/1996 |
| 5543465 | Process for the production of hydrophilic membranes A process for the production of hydrophilic membranes using at least one hydrophobic polymer and polyvinyl pyrrolidone as a hydrophilic polymer, membrane-forming shaping of the polymers and immobilization of the polyvinyl pyrrolidone is characterized in t... | 08/06/1996 |
| 5534150 | Selectively-permeable membrane and the use thereof A selectively-permeable membrane constituted by a composition comprising starch and a synthetic thermoplastic polymer is used for separating liquid aqueous-organic mixtures by pervaporation.... | 07/09/1996 |
| 5487831 | Recognition and separation of carbon clusters Carbon clusters, such as C60 and C70 fullerenes are separated by means of a recognition selector having the formula: ##STR1## wherein R1 is ##STR2## wherein R2 is O, S or NR12 wherein R... | 01/30/1996 |
| 5425878 | Membranes for ion transport and method for obtaining them The invention relates to membranes for facilitated ion transport in aqueous solutions. The membrane is an adduct of a heteropolysiloxane and a crown-ether, and contains certain ions such as picrate or fluoroborate. This membrane is efficient for the selec... | 06/20/1995 |
| 5401410 | Membrane and process for the production thereof Membranes composed of sulphonated polyaryl ether sulphones are disclosed in which the repetitive polymer units have the formula ##STR1## in which the aryl radicals are substituted by SO3 X where X is hydrogen or an alkali metal and the pol... | 03/28/1995 |
