| Patents for B01D 67 - Processes specially adapted for manufacturing semi-permeable membranes for separation processes or apparatus (11,858) |
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| 10/17/1989 | US4874568 Coextruding different polymers, forming laminate, pulverizing and recoextruding, pulverizing, melting, extracting |
| 10/17/1989 | US4874567 Microporous membranes from polypropylene |
| 10/17/1989 | US4874516 A ceramic filter for semi-ultrafiltration |
| 10/11/1989 | EP0336535A1 Gas separation by composite solvent-swollen membranes |
| 10/11/1989 | EP0336241A2 Composite membranes, process for their production and their use |
| 10/11/1989 | EP0335972A1 Medical material and process for its production |
| 10/11/1989 | EP0303684A4 Methods of making biocompatible nucleophilic material. |
| 10/11/1989 | EP0299063A4 Hydrophilic article and method of producing same. |
| 10/10/1989 | US4873047 Wetting with phosphoric acid before rolling to desired shapes, then drying |
| 10/10/1989 | US4873037 Method for preparing an asymmetric semi-permeable membrane |
| 10/10/1989 | US4873034 Cooling polyolefin solution before extrusion to form gel-like sheet; extracting the volatile solvent, stretching |
| 10/10/1989 | US4873033 Crosslinked monomolecular film containing surfactant onto support |
| 10/10/1989 | US4872982 Multilayer hollow fiber with coating having different permeability |
| 10/10/1989 | US4872888 Microporous membrane filter and method of producing same |
| 10/04/1989 | EP0335805A2 Method of manufacturing porous membrane and porous membrane manufactured by the same method |
| 10/04/1989 | EP0335614A2 Heterogeneous membranes from highly filled thermoplastic orientable polymers |
| 10/04/1989 | EP0334998A2 Process for making a microporous film |
| 10/03/1989 | US4871494 Dissolving hydrophobic polymers using lewis acid and lewis base solvent system |
| 09/27/1989 | EP0334547A2 Adjusting charge ratio of liquid mixtures |
| 09/27/1989 | EP0334453A2 A process for preparing non-porous, selective membrane layers |
| 09/26/1989 | US4869857 Process for producing porous membranes |
| 09/26/1989 | CA1261564A1 Composite dense membrane and fluid(s) separation process carried out therewith |
| 09/19/1989 | US4868222 Preparation of asymmetric membranes by the solvent extraction of polymer components from polymer blends |
| 09/19/1989 | US4867881 Orientied microporous film |
| 09/13/1989 | EP0331846A2 Separation of organic liquids |
| 09/12/1989 | US4866099 Membrane |
| 09/12/1989 | US4865785 Process for the manufacture of asymmetric, porous membranes, and product thereof |
| 09/12/1989 | US4865743 Method for production of solution-diffusion membranes and their application for pervaporation |
| 09/05/1989 | US4863792 Bonded polyolefins |
| 09/05/1989 | US4863761 Continuous process for making coated composite hollow fiber membranes |
| 09/05/1989 | US4863604 Microporous asymmetric polyfluorocarbon membranes |
| 09/05/1989 | US4863496 Reactive posttreatment for gas separation membranes |
| 09/05/1989 | CA1259030A1 Cross flow filtration |
| 08/30/1989 | EP0330076A2 Continuous process for making coated composite hollow fiber membranes |
| 08/29/1989 | US4861628 Thin film composite membrane prepared by suspension deposition |
| 08/29/1989 | US4861486 Immobilized inorganic diffusion barriers and the use thereof in the separation of small molecular species from a solution |
| 08/29/1989 | US4861480 Organomineral semipermeable membrane and its production process |
| 08/22/1989 | US4859535 Porous hollow-fiber |
| 08/22/1989 | US4859288 Porous anodic aluminum oxide films |
| 08/22/1989 | US4859215 Polymeric membrane for gas separation |
| 08/22/1989 | CA1258604A1 Liquid membrane |
| 08/15/1989 | US4857201 Reverse osmosis cellulose and cellulosic membranes prepared by repeated drying and rewetting |
| 08/09/1989 | EP0327025A1 Porous membrane filter having fluid impermeable places and their use |
| 08/09/1989 | CN1034491A Gas dehydration membrane apparatus |
| 08/08/1989 | US4855163 Method of making polyvinylidene difluoride structure |
| 08/08/1989 | US4855162 Polytetrafluoroethylene coating of polymer surfaces |
| 08/08/1989 | US4855049 Intersecting pore networks; controlled energy levels; filters |
| 08/08/1989 | US4855048 Air dried cellulose acetate membranes |
| 08/02/1989 | EP0326076A2 Air dried cellulose acetate membranes |
| 08/02/1989 | EP0325752A1 Micro/ultrafiltration membranes of defined pore size and process for their manufacturing by means of pulsed laser irradiation |
| 08/01/1989 | US4853127 Microporous membrane |
| 07/25/1989 | US4851121 Crosslinking surface with organosulfone compound in alkal; water purification; odorless, nonfoaming |
| 07/19/1989 | EP0324675A1 Process for separating the components of a gaseous mixture using a composite membrane |
| 07/19/1989 | CN1034004A Semi-permeable membranes with internal discriminating region |
| 07/18/1989 | US4849106 Fouling resistant polymer membrane for separation, concentration |
| 07/05/1989 | EP0323431A2 Gas dehydration membrane process and apparatus |
| 07/05/1989 | EP0323341A2 Medical instrument |
| 07/05/1989 | EP0322866A2 Selective gas permeation membranes and method of manufacturing them |
| 07/05/1989 | EP0322604A1 Membrane filtration apparatus and method of making a membrane filtration unit |
| 07/05/1989 | CN1004679B Producing method of porous membrane |
| 07/04/1989 | US4845132 Hydrophilic porous membrane, method for production thereof, and plasma separator using said membrane |
| 07/04/1989 | US4843733 Process for drying water-wet polycarbonate membranes |
| 06/27/1989 | US4842741 Heterogeneous membranes from highly filled thermoplastic orientable polymers |
| 06/20/1989 | US4840819 Controlled amount of liquid in support layer |
| 06/20/1989 | US4840733 Fine porous membrane and process for producing the same |
| 06/20/1989 | US4840636 Modifying the surface of the interior pore walls of objects such as membranes with gas activated by partial brush discharge |
| 06/15/1989 | WO1989005182A1 Hydrolyzed membrane and process for its production |
| 06/15/1989 | WO1989005181A1 Membrane filtration apparatus and method of making a membrane filtration unit |
| 06/14/1989 | EP0320419A1 Process and apparatus for rinsing and priming an exchange device |
| 06/14/1989 | EP0320033A1 Composite ceramic micropermeable membrane, process and apparatus for producing such membrane |
| 06/14/1989 | EP0320023A2 Macroporous polymeric membranes, their preparation and their use for polymer separation |
| 06/13/1989 | US4839203 Semi-permeable membranes prepared via reaction of cationic groups with nucleophilic groups |
| 06/06/1989 | US4837386 Immersed in fluid to remove surface heat |
| 06/06/1989 | US4836928 Separation method, separation device and separation apparatus for separating body fluid into respective components |
| 05/30/1989 | CA1254824A1 Supported ion exchange membrane films |
| 05/24/1989 | EP0317399A1 Microporous membrane and method of preparing by irradiation on both sides |
| 05/24/1989 | EP0316571A2 Process for preparation of porous shaped articles |
| 05/23/1989 | US4833014 Composite membranes useful for the separation of organic compounds of low molecular weight from aqueous inorganic salts containing solutions |
| 05/23/1989 | US4832997 Production of asymmetrical microporous membranes by double irradiation and asymmetrical membranes |
| 05/18/1989 | WO1989004206A1 Semi-permeable membranes with an internal discriminating region |
| 05/18/1989 | WO1989004201A1 Composite membranes of poly(methyl methacrylate) blends |
| 05/18/1989 | WO1989004200A1 Treatment of permeable membranes |
| 05/18/1989 | WO1989004198A1 Porous membrane and process for its production |
| 05/16/1989 | US4831236 Apparatus for clearing a cellulose ester filter |
| 05/16/1989 | US4830885 Chlorine-resistant semipermeable membranes |
| 05/16/1989 | US4830796 Extruding the coagulating solution through spinnerets; permeability, ultra-filtration |
| 05/16/1989 | CA1254007A1 Preswelling of regenerated cellulose membranes for organic separations and the use thereof |
| 05/10/1989 | EP0315420A2 Process for producing an apparatus with hollow fiber membrane for cleaning blood |
| 05/10/1989 | EP0315022A2 Filtering device for blood platelet |
| 05/09/1989 | US4828980 Low ionization potential, immunoassay |
| 05/09/1989 | US4828773 Highly aromatic anisotropic polyurea/urethane membranes and their use for the separation of aromatics from non-aromatics |
| 05/09/1989 | US4828772 Microporous membranes of ultrahigh molecular weight polyethylene |
| 05/09/1989 | US4828700 Rejection enhancing coatings for reverse osmosis membranes |
| 05/09/1989 | US4828585 Surface modified gas separation membranes |
| 05/03/1989 | EP0314581A2 Oxygenator using porous hollow fiber membranes |
| 05/03/1989 | DE3736205A1 Modified glass-fibre membranes, method for manufacturing them, and their use for protein-chemical analysis |
| 05/02/1989 | US4826599 Composite membranes and their manufacture and use |
| 05/02/1989 | CA1253305A1 Anionic microporous membrane, charge modified with water soluble polymer |
| 04/25/1989 | US4824870 Polyaldehyde activated membranes |
| 04/25/1989 | US4824574 Novel water softening process using membranes |