| Patents for B01D 69 - Semi-permeable membranes for separation processes or apparatus characterised by their form, structure or properties; Manufacturing processes specially adapted therefor (16,729) |
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| 11/21/1991 | EP0456939A1 Hydrophilic porous fluoropolymer membrane |
| 11/19/1991 | US5066403 Polytetrafluoroethylene bonded to perflurosulfonic acid polymer |
| 11/19/1991 | US5066401 Immobilizing biochemical material |
| 11/19/1991 | US5066398 Porous Layer Of Inorganic Material And A Separating Layer Of Polyphosphazene |
| 11/14/1991 | WO1991017204A1 Polyvinylidene fluoride membrane |
| 11/14/1991 | WO1991014706A3 Lectin affinity membranes and methods for using them |
| 11/14/1991 | DE4114611A1 Microporous membrane element for multiple filtration unit - for slot or dot blotting analyses is compacted in seal area to avoid cross-contamination |
| 11/13/1991 | EP0455645A1 Irradiated expanded polytetrafluoroethylen composites, and devices using them, and processes for making them. |
| 11/12/1991 | US5064593 Process for producing multilayer polytetrafluoroethylene porous membrane |
| 11/12/1991 | US5064580 Process for making microporous membranes from poly(etheretherketone)-type polymers |
| 11/11/1991 | WO1991016968A1 Membrane for isolating virus from solution |
| 11/05/1991 | US5063009 Process for preparation of hollow fibers for fluid separator construction |
| 11/05/1991 | US5062866 Transition metal, hydrophilic group 1A salt |
| 10/30/1991 | EP0453473A1 Support for selective immuno-purification of a liquid and process for treating said support. |
| 10/30/1991 | EP0183757B1 Method of producing hollow fibres and their applications particularly in the field of membrane-type separations |
| 10/29/1991 | US5061767 Homopolymers from concentrated emulsions of hydrophilic and hydrophobic monomers |
| 10/29/1991 | US5061301 Process for the preparation of surface modified, multilayered, composite membranes for oxygen enrichment and the gas separation membranes |
| 10/24/1991 | DE4110117A1 Gas and fluid filter element which can be automatically exchanged - comprises gas or fluid-permeable circular section sepd. from surrounding impermeable material by impermeable margin |
| 10/23/1991 | EP0453156A1 Reinforced sleeve assembly |
| 10/22/1991 | US5059659 Surface treatments to impart hydrophilicity |
| 10/22/1991 | US5059220 Composite polymeric membranes for the separation of mixtures of gases and the method of preparation the same |
| 10/15/1991 | CA1290630C Hydrophilized porous membrane and production process thereof |
| 10/13/1991 | WO1991015952A1 Gas permeable thrombo-resistant coatings and methods of manufacture |
| 10/13/1991 | CA2080229A1 Gas permeable thrombo-resistant coatings and methods of manufacture |
| 10/09/1991 | EP0449873A1 Filtering apparatus |
| 10/08/1991 | US5055171 Nonporous solid composite encapsulating metallic electrode |
| 10/03/1991 | WO1991014706A2 Lectin affinity membranes and methods for using them |
| 10/03/1991 | WO1991014499A1 Composite membrane |
| 10/02/1991 | EP0449054A1 Hollow polyacrylonitrile fibres |
| 10/01/1991 | US5053133 Affinity separation with activated polyamide microporous membranes |
| 10/01/1991 | US5053132 Extraction hydropphilic & hydrophobic sides of a fiber |
| 09/29/1991 | CA2038964A1 Polyacrylonitrile hollow threads |
| 09/25/1991 | EP0447486A1 Defect-free ultrahigh flux asymmetric membranes. |
| 09/25/1991 | EP0447447A1 Fabric reinforced composite membrane |
| 09/25/1991 | EP0217831B1 Reversed phase membranes |
| 09/25/1991 | EP0214245B1 Altering pore size distributions |
| 09/24/1991 | US5051182 Hydrophobic microporus membrane |
| 09/24/1991 | US5051178 Process of producing composite semipermeable membrane |
| 09/24/1991 | CA1289493C Method and apparatus for catalyst containment in multiphase membranereactor systems |
| 09/24/1991 | CA1289312C Composite semipermeable membrane |
| 09/18/1991 | EP0446947A2 Gas separating asymmetric membrane |
| 09/18/1991 | EP0446471A1 Process for making a microfiltration, ultrafiltration, pervaporation or reverse osmosis membrane for suspensions, emulsions or gas separation |
| 09/17/1991 | US5049282 Semipermeable composite membranes |
| 09/17/1991 | US5049276 Hollow fiber membrane |
| 09/17/1991 | US5049275 Polymerizing vinyl monomer in pores of membrane |
| 09/17/1991 | US5049167 Multilayer interfacial composite membrane |
| 09/11/1991 | EP0445853A1 Hydrophilic membrane, process for producing a hydrophilic membrane |
| 09/10/1991 | US5046936 Draw plate for the production of membranes of an organic material |
| 09/10/1991 | CA1288563C Placing controlled porosity blockages in unwanted pore sizes of separatingdevice |
| 09/05/1991 | DE4106742A1 Combining similarly holed micrometer pored plastic - or metal filter elements when offset to produce microporous structure |
| 09/04/1991 | CN1054200A Dry high flux semipermeable membranes |
| 09/03/1991 | US5045357 Process for preparing a membranous gas separator |
| 09/03/1991 | US5045354 Production of supported thin film membranes |
| 08/29/1991 | DE4006139A1 Three layer composite membrane for gas sepn. |
| 08/28/1991 | EP0201604B1 Permselective hollow yarn membrane, method of producing the same, method of separating plasma components, and plasma component separator |
| 08/28/1991 | CN1054079A Process for purifing solution or suspension of polyorganophosphazene by membranes |
| 08/27/1991 | US5043069 Filtration device having hardened gum formed-in-place membranes |
| 08/27/1991 | CA1288060C Gas separating |
| 08/27/1991 | CA1288057C Cross flow microfilter |
| 08/21/1991 | EP0442785A1 Process for purification of polyorganophosphazene solutions or suspensions by means of membranes |
| 08/21/1991 | EP0442557A1 Composite membrane and process for producing same |
| 08/20/1991 | CA1287712C Method for forming polymer films using a removable substrate |
| 08/15/1991 | WO1991012072A1 Separation by carrier mediated transport |
| 08/15/1991 | CA2076041A1 Separation by carrier mediated transport |
| 08/14/1991 | EP0441660A1 Affinity separation with activated polyamide microporous membranes |
| 08/14/1991 | CN1013478B Permeable membrans for enhanced gas separation |
| 08/14/1991 | CA2036160A1 Process for the purification of solutions or suspensions of polyorganophosphazene by use of membranes |
| 08/13/1991 | US5039421 Solvent stable membranes |
| 08/11/1991 | CA2035360A1 Multilayer membrane and process of manufacturing the same |
| 08/08/1991 | WO1991011250A1 Composite semipermeable membrane and production thereof |
| 08/08/1991 | DE4004153C1 Multilayered membrane with high sepn. performance - comprises carrier layer of polyamide, polyvinylidene-di:fluoride polyester or glass fibres porous supply and PVA sepn. layer |
| 08/07/1991 | EP0439877A1 Process for separating gases |
| 08/07/1991 | EP0439461A1 Matrix membrane |
| 08/06/1991 | US5037610 Filling hollow fiber micropores with a blend of silicone rubber and silicone oil |
| 08/06/1991 | US5037556 Controlling the pressure over a polyimine membrane which has been crosslinked with a polyisocyanate or a polycarbonyl chloride |
| 08/06/1991 | US5037555 Desalination of water |
| 08/06/1991 | US5037554 Selectively permeable membrane |
| 08/06/1991 | US5037457 Sterile hydrophobic polytetrafluoroethylene membrane laminate |
| 08/06/1991 | CA1287442C High performance anion-exchange chromatographic packing composition |
| 07/31/1991 | CN1053373A Preparation process of polypropylene hollow fiber microporous membrane |
| 07/30/1991 | CA1286865C Porous liquid polytetrafluoroethylene membrane with hydrophobic and hydrophilic surfaces |
| 07/25/1991 | WO1991010495A1 Laminated microporous fluorocarbon membrane and fluorocarbon filter cartridge using same |
| 07/24/1991 | EP0483143A4 Membrane affinity apparatus and purification methods related thereto. |
| 07/24/1991 | EP0437721A1 Process for producing multilayer polytetrafluoroethylene porous membrane and semisintered polytetrafluoroethylene multilayer structure |
| 07/23/1991 | US5034129 Composite carruer |
| 07/23/1991 | US5034024 Surfactant treatment of aromatic polyimide gas separation membranes |
| 07/23/1991 | CA1286612C Process for the separation of solvents from hydrocarbons dissolved in said solvents |
| 07/23/1991 | CA1286462C Co-spun filament within a hollow filament and spinneret for production thereof |
| 07/17/1991 | EP0436720A1 Hydrolyzed membrane and process for its production |
| 07/17/1991 | CN1053046A Separation method and separating agent |
| 07/16/1991 | US5032331 Method for production of hydrophilic porous membrane of polyvinylidene fluoride |
| 07/16/1991 | US5032282 Porous substrate of crosslinked acrylonitrile polymer coated with first a diazonium polymer and then a crosslinked ionic hydrophilic polymer; reverse osmosis; ultrafiltration; desalting |
| 07/16/1991 | US5032281 Separating membrane and separation method |
| 07/16/1991 | US5032278 Using a crosslinked polyethylenimine membrane; maintaining pressure drop |
| 07/16/1991 | US5032149 Surfactant treatment of polyaramide gas separation membranes |
| 07/16/1991 | CA1286065C Formation of continuous pores membrane by treating liquid medium containing protien with reactant |
| 07/13/1991 | WO1991010501A1 Ultrathin-film composite membrane |
| 07/13/1991 | CA2072077A1 Ultrathin-film composite membrane |
| 07/11/1991 | WO1991009670A1 Composite diaphragm, process for producing it and its use |
| 07/10/1991 | EP0436447A1 Asymmetric semipermeable membrane for the treatment of biological liquids |