| Patents for B01D 67 - Processes specially adapted for manufacturing semi-permeable membranes for separation processes or apparatus (11,858) |
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| 11/12/1991 | US5064866 Selectively ion-adsorptive, porous membrane having side chains containing both a neutral hydroxyl group and an ion exchange group |
| 11/12/1991 | US5064580 Process for making microporous membranes from poly(etheretherketone)-type polymers |
| 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 |
| 10/29/1991 | US5061298 Gas separating membranes formed from blends of polyimide polymers |
| 10/22/1991 | US5059659 Surface treatments to impart hydrophilicity |
| 10/16/1991 | EP0451353A1 Polypiperazinamide-based reverse-osmosis membranes and post-treatment process for their preparation |
| 10/15/1991 | US5057218 Porous membrane and production process thereof |
| 10/15/1991 | CA1290630C Hydrophilized porous membrane and production process thereof |
| 10/15/1991 | CA1290519C Fibres and hollow fibrous tubes |
| 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 | EP0450894A1 Porous PTFE structures |
| 10/08/1991 | US5055631 Sulfonated polysulfone membranes for aromatics/saturates separation |
| 10/08/1991 | CA1290257C Osmotic concentration by membrane |
| 10/03/1991 | WO1991014706A2 Lectin affinity membranes and methods for using them |
| 10/02/1991 | EP0449450A1 Micro-emulsions |
| 10/01/1991 | US5053133 Affinity separation with activated polyamide microporous membranes |
| 10/01/1991 | US5053132 Extraction hydropphilic & hydrophobic sides of a fiber |
| 09/27/1991 | CA2038399A1 Micro-emusions |
| 09/25/1991 | EP0447486A1 Defect-free ultrahigh flux asymmetric membranes. |
| 09/25/1991 | EP0217831B1 Reversed phase membranes |
| 09/25/1991 | EP0214245B1 Altering pore size distributions |
| 09/24/1991 | US5051182 Hydrophobic microporus 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 | US5049275 Polymerizing vinyl monomer in pores of membrane |
| 09/12/1991 | DE4007383A1 Hydraulic micro:filtration membrane of polysulphone prepn. - by casting film from soln. of polysulphone contg. polyvinyl-pyrrolidone then crosslinking latter in alkali bath |
| 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 | CA1288875C Method for perforating solid sheet material through impingement with particules |
| 09/10/1991 | CA1288563C Placing controlled porosity blockages in unwanted pore sizes of separatingdevice |
| 09/05/1991 | WO1991012886A1 Immobilized polyethylene oxide star molecules for bioapplications |
| 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 | US5045093 Gas separating membranes from polyimide polymers and a process for using the same |
| 08/28/1991 | EP0201604B1 Permselective hollow yarn membrane, method of producing the same, method of separating plasma components, and plasma component separator |
| 08/27/1991 | US5043112 Process for forming articles comprising poly(phenylene sulfide) (PPS) |
| 08/27/1991 | US5043069 Filtration device having hardened gum formed-in-place membranes |
| 08/27/1991 | US5042993 Gas separating membranes from polyimide polymers |
| 08/27/1991 | CA1288057C Cross flow microfilter |
| 08/21/1991 | EP0442557A1 Composite membrane and process for producing same |
| 08/21/1991 | EP0442410A1 Membrane device for filtration, separation or catalytic reaction |
| 08/20/1991 | US5041225 Coating internal and external surfaces of membrane with a complex of a water soluble polymer and a complexing agent; protein affinity |
| 08/20/1991 | CA1287712C Method for forming polymer films using a removable substrate |
| 08/14/1991 | EP0441660A1 Affinity separation with activated polyamide microporous membranes |
| 08/14/1991 | CN1013478B Permeable membrans for enhanced gas separation |
| 08/13/1991 | US5039421 Solvent stable membranes |
| 08/11/1991 | CA2035360A1 Multilayer membrane and process of manufacturing the same |
| 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 |
| 08/06/1991 | US5037656 Porous membrane having hydrophilic and cell growth promotions surface and process |
| 07/30/1991 | US5035801 Analysis membranes with improved compatibility |
| 07/30/1991 | CA1286865C Porous liquid polytetrafluoroethylene membrane with hydrophobic and hydrophilic surfaces |
| 07/26/1991 | WO1991011241A1 Coated media for chromatography |
| 07/25/1991 | WO1991010909A1 Method and apparatus for treating filter membranes |
| 07/25/1991 | WO1991010498A1 Strongly acidic microporous membranes for cationic exchange |
| 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. |
| 07/23/1991 | US5034130 Mixture of a polyamide and a polyester in a solvent |
| 07/23/1991 | US5034129 Composite carruer |
| 07/23/1991 | US5034024 Surfactant treatment of aromatic polyimide gas separation membranes |
| 07/23/1991 | CA1286493C Apparatus for clearing a cellulose ester filter |
| 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 | US5032274 Process for producing fluorocarbon membranes and membrane product |
| 07/16/1991 | US5032149 Surfactant treatment of polyaramide gas separation membranes |
| 07/13/1991 | WO1991010501A1 Ultrathin-film composite membrane |
| 07/13/1991 | CA2072077A1 Ultrathin-film composite membrane |
| 07/10/1991 | EP0436447A1 Asymmetric semipermeable membrane for the treatment of biological liquids |
| 07/09/1991 | US5030672 Sulfonated polyarylether sulfone |
| 07/09/1991 | US5030355 Polyurethane and/or polyurea alloys; separating aromatics |
| 07/09/1991 | US5030352 Adsorption of hydrophilic-hydrophobic molecules onto hydrophobic substrate, then crosslinking to form durable hydrophilic film |
| 07/09/1991 | CA1285722C Reversed phase membranes |
| 07/03/1991 | CN1052618A Asymmetric semipermeable membrane for treatment of biological fluids |
| 07/02/1991 | US5028453 Method for reducing fouling |
| 07/02/1991 | US5028337 Coated membranes |
| 07/02/1991 | US5028332 Hydrophilic material and method of manufacturing |
| 07/02/1991 | US5028329 Process for preparing reverse-osmosis membrane, and membrane obtained with the process |
| 07/02/1991 | CA1285356C Multilayer composite hollow fibers and method of making same |
| 06/27/1991 | WO1991008826A1 A method for drying of gases, especially compressed air, a membrane for carrying out said method and a process for the manufacturing of said membrane |
| 06/27/1991 | DE3942867A1 Composite membrane for sepn. of gas mixts. - has porous backing, gas-permeable interlayer and perm-selective layer of amphiphilic mols. contg. 1 or 2 7-20C alkyl gps. per polar gp. |
| 06/19/1991 | EP0432358A1 Treated composite polyamide membranes to separate concentrated solute |
| 06/19/1991 | EP0207100B1 Process for changing the effective pore size of a structure |
| 06/19/1991 | CN1012879B Improved composite separation membranes and preparation and use thereof |
| 06/18/1991 | US5024765 Composite membranes and processes using them |
| 06/15/1991 | WO1991008828A1 Dry high flux semipermeable membranes |
| 06/14/1991 | CA2022612A1 Treated composite polyamide membranes to separate concentrated solute |
| 06/12/1991 | EP0431593A2 Separation method and separating agent |
| 06/12/1991 | EP0431494A2 Filtration media with low protein adsorbability |
| 06/11/1991 | US5022990 Chemical resistant filters |
| 06/08/1991 | CA2031599A1 Separation method and separating agent |
| 06/05/1991 | EP0430082A2 Porous membrane formed from an interpenetrating polymer network having hydrophilic surface |
| 06/04/1991 | US5021160 Strongly acidic microporous membranes for cation exchange |
| 05/29/1991 | CN1051681A Hardened gum formed-in-place membranes |
| 05/28/1991 | US5019262 Hydrophilic microporous membrane |