| Patents for B01D 71 - Semi-permeable membranes for separation processes or apparatus characterised by the material; Manufacturing processes specially adapted therefor (23,060) |
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| 06/20/1990 | EP0373215A1 Porous inorganic membrane with reactive inorganic binder, and method of forming same. |
| 06/20/1990 | CN1043090A Process for preparing membranes from tetrahalobisphenol polycarbonates |
| 06/19/1990 | US4935144 Concentration of water-ketone compositions |
| 06/19/1990 | US4935140 Membrane and process for producing the membrane |
| 06/19/1990 | US4935139 Composite membranes |
| 06/16/1990 | CA2005879A1 Heat resistant microporous material production and products |
| 06/14/1990 | WO1990006337A1 Fabric reinforced composite membrane |
| 06/14/1990 | WO1990006169A2 Defect-free ultrahigh flux asymmetric membranes |
| 06/14/1990 | WO1990006166A1 Collagen film for use as a pervaporation membrane |
| 06/13/1990 | EP0372683A2 Dehydration of organic oxygenates |
| 06/13/1990 | EP0372522A2 Dieting agents comprising alpha-amylase inhibiting substances from wheat |
| 06/13/1990 | EP0372351A1 Process for the manufacture of a ceramic filter unit |
| 06/13/1990 | DE3841716A1 Kollagenfolie als pervaporationsmembran Collagen film as pervaporation |
| 06/13/1990 | CN1042847A Process for treating liquid-wet polycarbonate membrane to improve its gas separation |
| 06/12/1990 | US4933085 Polyetherimide is mixed with solvent, shaped, and brought in contact with precipitating agent |
| 06/12/1990 | US4933084 Difference of distance to the outer and inner wall surfaces measured from fiber mid point varies along periphery |
| 06/12/1990 | US4933083 Polybenzimidazole thin film composite membranes |
| 06/12/1990 | US4933082 Gas-permeable laminate |
| 06/12/1990 | US4933081 High filtration flow rate |
| 06/12/1990 | US4933054 Solid electrolyte with coating on one surface of conductive metal, metal oxide or mixture, second surface coated with metal, metal oxide or mixture |
| 06/12/1990 | US4933052 Process for the preparation of continuous bilayer electronically-conductive polymer films |
| 06/12/1990 | US4932986 Cross-linked gas selective membranes |
| 06/12/1990 | US4932983 Copolyimide gas separation membranes derived from substituted methylene dianilines and unsubstituted diamines |
| 06/12/1990 | US4932982 Copolyimide gas separation membranes derived from substituted phenylene diamines and substituted methylene dianilines |
| 06/12/1990 | CA1270226A1 Method for forming composite polymer films |
| 06/12/1990 | CA1270207A1 Membrane separator device, and its manufacture |
| 06/10/1990 | CA2004996A1 Collagen foil used as pervaporation membrane |
| 06/06/1990 | EP0371258A2 Surface-hydrated porous polyacrylonitrile substrates, such as beads derivatives thereof, process for their preparation, and methods for their use |
| 06/06/1990 | EP0371200A1 Composite, gas-permeable membrane and method of making the same |
| 06/06/1990 | CN1042667A Composite semipermeable membranes and method of making same |
| 06/06/1990 | CA2004633A1 Defect-free ultrahigh flux asymmetric membranes |
| 06/05/1990 | US4931184 Chromatographic separation |
| 06/05/1990 | US4931182 Membranes formed from unsaturated polyimides |
| 05/31/1990 | CA2003205A1 Fabric reinforced composite membrane |
| 05/30/1990 | EP0370509A2 Composite polymeric membranes for the separation of gas mixtures and their preparation |
| 05/29/1990 | US4929722 Acid decrystallization of aminopolysaccharides and derivatives thereof |
| 05/29/1990 | US4929406 Process for producing an inorganic porous membrane |
| 05/29/1990 | US4929405 Ultrathin polyimide polymer flims and their preparation |
| 05/29/1990 | US4929358 Polyurethane-imide membranes and their use for the separation of aromatics from non-aromatics |
| 05/29/1990 | US4929357 Isocyanurate crosslinked polyurethane membranes and their use for the separation of aromatics from non-aromatics |
| 05/29/1990 | US4929354 Filter element having microporous membrane |
| 05/29/1990 | CA1269795A1 Amphiphilic polyimide precursor and process for preparing the same |
| 05/29/1990 | CA1269505A1 Polymer membrane |
| 05/23/1990 | EP0369787A2 Membrane for separation of water-alcohol mixed liquid and process for preparation thereof |
| 05/23/1990 | EP0369713A2 Oxygen-complexing ultrathin films by interfacial polymerization |
| 05/23/1990 | EP0368846A1 Polytetrafluoroethylene coating of polymer surfaces |
| 05/23/1990 | CN1042314A Treatment of permeable membranes |
| 05/22/1990 | US4927576 Method for the manufacture of flat permeable membrane |
| 05/22/1990 | US4927540 Ionic complex for enhancing performance of water treatment membranes |
| 05/22/1990 | US4927535 Filtration, semipermeability |
| 05/22/1990 | CA2003486A1 Composite polymeric membranes for the separation of mixtures of gases and the method for preparation the same |
| 05/22/1990 | CA1269485A1 Membrane |
| 05/22/1990 | CA1269404A1 Porous membrane of sinterable refractory metal oxides or silica |
| 05/22/1990 | CA1269209A1 Method for sizing polytetrafluoroethylene fabrics |
| 05/17/1990 | WO1990005016A1 Process for treating a liquid-wet polycarbonate membrane to improve its gas separation properties |
| 05/17/1990 | WO1990005007A1 Porous membranes |
| 05/17/1990 | WO1990005006A1 Extrusion of hollow fibre membranes |
| 05/17/1990 | DE3837090A1 Films made from aromatic polycarbonates |
| 05/16/1990 | EP0368272A1 Process for treating a liquid-wet polycarbonate membrane to improve its gas separation properties |
| 05/16/1990 | EP0368253A2 Delivery system for pharmaceutical or therapeutic actives |
| 05/16/1990 | EP0368003A2 Microporous polyether ether ketone membranes and the preparation thereof |
| 05/16/1990 | EP0367774A1 Reverse osmosis apparatus. |
| 05/16/1990 | EP0197969B1 Process for the preparation of cellulose film, cellulose film produced thereby, artificial skin graft and its use |
| 05/16/1990 | CN1042089A Treating porous anodic aluminium oxide membrane |
| 05/15/1990 | US4925589 Addition acrylic type polymer |
| 05/15/1990 | US4925562 Zeolite in polysiloxane for alcohol separation |
| 05/15/1990 | US4925534 Hemodialysis method and membrane |
| 05/15/1990 | CA1268911A1 Polyphosphazene gas separation membranes |
| 05/09/1990 | EP0367363A2 Compositions and process for separating fluid mixtures |
| 05/09/1990 | EP0366649A1 A method for improving the separation properties of semi-permeable membranes and membranes accordingly improved. |
| 05/09/1990 | CA2002459A1 Process for treating a liquid-wet polycarbonate membrane to improve its gas separation properties |
| 05/08/1990 | US4923650 Breathable microporous film and methods for making it |
| 05/08/1990 | US4923611 Ultraviolet or ionizing radiation to decrease haloalkyl groups; diffusion dialysis; permselectivity |
| 05/08/1990 | US4923610 Macroporous polymeric membranes for the separation of polymers and a method of their application |
| 05/08/1990 | US4923608 Micro/ultrafiltration membranes with a fixed pore size formed through irradiation with pulsed lasers and process for manufacturing the same |
| 05/08/1990 | CA2002404A1 Delivery system for pharmaceutical or therapeutic actives |
| 05/08/1990 | CA1268886A1 Reverse osmosis membrane, casting solution, and processes for making same |
| 05/03/1990 | DE4000825A1 Hydrophilic membrane filters of polysulphone for micro-filtration - obtd. from solns. of polysulphone in N-methyl:pyrrolidone and polyethylene glycol, with addn. of polyvinyl-pyrrolidone |
| 05/03/1990 | DE3836162A1 Films made from aromatic polyether sulphones |
| 05/02/1990 | EP0366237A2 Siloxane-grafted membranes |
| 05/02/1990 | EP0366228A1 Process of making ultrathin-skinned asymmetric membranes by immiscible solvents treatment |
| 05/02/1990 | CN1041708A Porous anodic aluminium oxide membranes |
| 05/02/1990 | CN1041706A Microfilter device |
| 05/01/1990 | US4921651 Thin film polymer blend membranes |
| 05/01/1990 | US4921611 Polyurethane copolymers |
| 04/26/1990 | DE3836169A1 Films made from aromatic polyether ketones |
| 04/25/1990 | EP0365126A1 Tetrakis-amido high flux membranes |
| 04/25/1990 | EP0364893A2 Wholly aromatic polyamides, process for producing the same and shaped articles |
| 04/25/1990 | EP0364892A2 Wholly aromatic polyamides, process for producing the same and shaped articles |
| 04/25/1990 | EP0364741A1 Aromatic polyetherketones |
| 04/25/1990 | EP0364628A1 Gas, isotope, and liquid separations by membranes |
| 04/25/1990 | CN1041538A Membrane unit and membrane device for separation of superpure hydrogen from hydrogen containing gas mixture |
| 04/24/1990 | US4920193 Polyhenylene ether, polysulfone |
| 04/24/1990 | US4919992 Process for making microporous products and the products thereof |
| 04/24/1990 | US4919865 Composite membranes of poly (methyl methacrylate) blends, their manufacture and their use |
| 04/24/1990 | US4919863 Oxides formed on porous steel foil |
| 04/24/1990 | US4919860 Manufacture of porous carbon membranes |
| 04/24/1990 | US4919811 Affinity membranes having pendant hydroxy groups and processes for the preparation and use thereof |
| 04/24/1990 | US4919810 Porous membrane |
| 04/24/1990 | US4919809 Hollow fiber membrane |