| 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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| 07/17/1990 | US4941976 Polyvinyl alcohol crosslinked with polyaldehyde, bonded to a porous layer of polysulfone on polyester backing |
| 07/17/1990 | US4941972 Chlorine-stable membrane compositions |
| 07/17/1990 | US4941893 Gas separation by semi-permeable membranes |
| 07/17/1990 | US4941812 Spinneret for production of a hollow filament within a hollow filament composite fiber having spacing means |
| 07/12/1990 | WO1990007575A1 Stabilized microporous materials and hydrogel materials |
| 07/12/1990 | WO1990007545A2 Stabilized microporous materials and hydrogel materials |
| 07/12/1990 | WO1990006169A3 Defect-free ultrahigh flux asymmetric membranes |
| 07/12/1990 | DE3920562C1 Plate membrane used in micro- and ultra-filtration - obtd. by forming polymer membrane layer on rigid and porous plate through phase inversion process |
| 07/11/1990 | CN1043636A Porous membranes |
| 07/10/1990 | US4940541 Blood cleaning hollow fiber membrane, method for cleaning blood, and apparatus therefor |
| 07/04/1990 | EP0376638A2 A degassing tube for solvents |
| 07/04/1990 | CN1043446A Polysulfone-titanium micro-porous complex ultrafilter membrane and its preparation |
| 07/03/1990 | US4939214 Film comprised of at least one monomolecular layer and process for its preparation using a higher alkyl amine |
| 07/03/1990 | US4938902 Process for producing aromatic imide polymer hollow filaments |
| 07/03/1990 | US4938778 Composite hollow fiber type separation membranes processes for the preparation thereof and their use |
| 06/28/1990 | WO1990006846A2 Irradiated expanded polytetrafluoroethylene composites, and devices using them, and processes for making them |
| 06/28/1990 | WO1990006805A1 Permeation membrane and process for making it |
| 06/28/1990 | WO1990006804A1 Filtering apparatus |
| 06/28/1990 | WO1990006801A1 Hollow fiber vertical quench bath |
| 06/27/1990 | EP0375481A1 Process for manufacturing a unified filtration membrane set, used form and product manufactured in this way |
| 06/27/1990 | EP0375004A1 Process for manufacturing a porous organic material, particularly a semi permeable organic membrane having a multitude of different longitudinal channels |
| 06/27/1990 | EP0375003A1 Process for making a porous organic material, in particular an organic semi-permeable membrane comprising multiple longitudinal spaced bores |
| 06/27/1990 | EP0375002A1 Spinneret for membrane manufacturing from organic material having at least one longitudinal channel |
| 06/27/1990 | EP0374605A1 Sterile hydrophobic polytetrafluoroethylene membrane laminate |
| 06/27/1990 | EP0374309A1 Membrane separation apparatus and method |
| 06/27/1990 | CA2006588A1 Semipermeable membranes based on specified tetrabromobisphenol type polyesters |
| 06/22/1990 | CA2004321A1 Entrusion die to produce organic material membranes with at least one lengthwise channel |
| 06/22/1990 | CA2004320A1 Organic porous material manufacturing process namely an organic semi-permeable membrane with spaced lengthwise multi-channels |
| 06/22/1990 | CA2004319A1 Organic porous material manufacturing process, namely an organic semi-permeable membrane with spaced lengthwise multi-channels |
| 06/20/1990 | EP0373683A1 A process for the separation of carbon dioxide |
| 06/20/1990 | EP0250327B1 Ultrafiltration, hyperfiltration or demineralization element, process for producing the same and its use in treating radioactive liquid wastes |
| 06/20/1990 | CN1043090A Process for preparing membranes from tetrahalobisphenol polycarbonates |
| 06/19/1990 | US4935144 Concentration of water-ketone compositions |
| 06/19/1990 | US4935141 Selectively permeable asymmetric membranes suitable for use in hemodialysis and processes for manufacturing such membranes |
| 06/19/1990 | US4935140 Membrane and process for producing the membrane |
| 06/16/1990 | CA2005650A1 Permeation membrane and process for making it |
| 06/14/1990 | WO1990006337A1 Fabric reinforced composite membrane |
| 06/14/1990 | WO1990006169A2 Defect-free ultrahigh flux asymmetric membranes |
| 06/13/1990 | EP0372683A2 Dehydration of organic oxygenates |
| 06/13/1990 | CN1042909A Process for separation of carbon dioxide |
| 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 | CA2005309A1 Filtering apparatus |
| 06/12/1990 | CA1270226A1 Method for forming composite polymer films |
| 06/06/1990 | EP0371200A1 Composite, gas-permeable membrane and method of making the same |
| 06/06/1990 | EP0371178A1 Method for producing a blood cleaning apparatus with hollow fiber membranes |
| 06/06/1990 | EP0162068B1 Separating oil emulsions |
| 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 | US4931181 Composite membranes for fluid separations |
| 05/31/1990 | CA2003205A1 Fabric reinforced composite membrane |
| 05/30/1990 | EP0370509A2 Composite polymeric membranes for the separation of gas mixtures and their preparation |
| 05/30/1990 | EP0370149A2 Ionic semiconductor materials and applications thereof |
| 05/29/1990 | US4929405 Ultrathin polyimide polymer flims and their preparation |
| 05/29/1990 | US4929354 Filter element having microporous membrane |
| 05/23/1990 | EP0369769A2 Liquid chromatography using microporous hollow fibers |
| 05/23/1990 | EP0369713A2 Oxygen-complexing ultrathin films by interfacial polymerization |
| 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 | CA2003486A1 Composite polymeric membranes for the separation of mixtures of gases and the method for preparation the same |
| 05/22/1990 | CA1269209A1 Method for sizing polytetrafluoroethylene fabrics |
| 05/17/1990 | WO1990005018A1 Membrane affinity apparatus and purification methods related thereto |
| 05/17/1990 | WO1990005007A1 Porous membranes |
| 05/17/1990 | WO1990005006A1 Extrusion of hollow fibre membranes |
| 05/16/1990 | EP0368447A1 Wet annealing of hollow fibers |
| 05/16/1990 | EP0261577B1 Dicarboxamides, process for their preparation, ion-selective membranes and test devices containing them, and lithium complexes of the dicarboxamides |
| 05/15/1990 | US4925566 Ultrafiltration, hyperfiltration or demineralization element, its production process and its use for the treatment of liquid radioactive effluents |
| 05/15/1990 | US4925562 Zeolite in polysiloxane for alcohol separation |
| 05/15/1990 | US4925534 Hemodialysis method and membrane |
| 05/15/1990 | US4925459 Using molecular sieve zeolite |
| 05/15/1990 | CA2002370A1 Liquid chromatography using microporous hollow fibers |
| 05/09/1990 | EP0367337A1 Membrane container with plugged pores |
| 05/09/1990 | EP0366844A1 Selective separation of aromatic hydrocarbons from a mixture of aromatic and saturated hydrocarbons using polyethylene glycol impregnated hydrophilic membranes |
| 05/09/1990 | EP0366649A1 A method for improving the separation properties of semi-permeable membranes and membranes accordingly improved. |
| 05/08/1990 | US4923901 Membranes with bound oligonucleotides and peptides |
| 05/08/1990 | US4923680 Two polymer layers |
| 05/08/1990 | US4923679 Hollow fiber membrane type oxygenator and method for manufacturing same |
| 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 | CA1268886A1 Reverse osmosis membrane, casting solution, and processes for making same |
| 05/03/1990 | WO1990004858A1 Method for forming a gas-permeable and ion-permeable membrane |
| 05/03/1990 | WO1990004451A1 Filtration systems |
| 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 | CN1041706A Microfilter device |
| 05/01/1990 | US4921651 Thin film polymer blend membranes |
| 05/01/1990 | US4921612 Asymmetrically-wettable porous membrane process |
| 05/01/1990 | US4921611 Polyurethane copolymers |
| 04/25/1990 | EP0365126A1 Tetrakis-amido high flux membranes |
| 04/25/1990 | EP0365112A2 Multi-layered laminates of microporous films |
| 04/25/1990 | EP0364628A1 Gas, isotope, and liquid separations by membranes |
| 04/24/1990 | US4919865 Composite membranes of poly (methyl methacrylate) blends, their manufacture and their use |
| 04/24/1990 | US4919856 Process for producing membranes for use in gas separation |
| 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 |
| 04/24/1990 | US4919808 Semipermeable membrane compositions |