| Patents for B01D 67 - Processes specially adapted for manufacturing semi-permeable membranes for separation processes or apparatus (11,858) |
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| 08/03/1990 | WO1990008801A1 Highly air permeable expanded polytetrafluoroethylene membranes and process for making them |
| 08/03/1990 | CA2009251A1 Distillation separation membrane and method for membrane distillation separation |
| 08/01/1990 | EP0380424A1 Process for the concentration by pervaporation of an aqueous fluid containing volatile or carrier water vapour-distillable organic compounds |
| 08/01/1990 | EP0221171B1 The use of diffusion membranes |
| 07/31/1990 | US4944881 Liquid separation membrane for pervaporation |
| 07/31/1990 | US4944879 Multilayer; overcoating with electron beam crosslinked polymer |
| 07/31/1990 | US4944775 Preparation of poly(phenylene oxide) asymmetric gas separation membranes |
| 07/26/1990 | WO1990008172A1 Support for selective immuno-purification of a liquid and process for treating said support |
| 07/24/1990 | USRE33273 Semipermeable membranes coated with fluorinated pyridinium bromide |
| 07/24/1990 | US4943373 Oxidation with potassium permanganate |
| 07/24/1990 | CA1271907A1 Hollow fiber membrane made by melt-spinning polyolefin/filler composition |
| 07/18/1990 | EP0378441A2 A polyvinylidene fluoride porous membrane and a method for producing the same |
| 07/18/1990 | CN1008793B Membrane artificial lungs and its mfg. method |
| 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 |
| 07/03/1990 | US4939180 Process of producing a composite membrane |
| 07/03/1990 | US4938872 Treatment for reverse osmosis membranes |
| 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 |
| 06/22/1990 | 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 | CN1043090A Process for preparing membranes from tetrahalobisphenol polycarbonates |
| 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 |
| 06/14/1990 | WO1990006169A2 Defect-free ultrahigh flux asymmetric membranes |
| 06/13/1990 | CN1042847A Process for treating liquid-wet polycarbonate membrane to improve its gas separation |
| 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 | US4933081 High filtration flow rate |
| 06/12/1990 | US4932986 Cross-linked gas selective membranes |
| 06/12/1990 | CA1270226A1 Method for forming composite polymer films |
| 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 | US4931182 Membranes formed from unsaturated polyimides |
| 05/29/1990 | CA1269505A1 Polymer membrane |
| 05/23/1990 | EP0369014A1 Hydrophilic porous membrane, process for its production and plasma-separating apparatus |
| 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 | CA1269485A1 Membrane |
| 05/22/1990 | CA1269209A1 Method for sizing polytetrafluoroethylene fabrics |
| 05/17/1990 | WO1990005018A1 Membrane affinity apparatus and purification methods related thereto |
| 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 |
| 05/16/1990 | EP0368447A1 Wet annealing of hollow fibers |
| 05/16/1990 | EP0368272A1 Process for treating a liquid-wet polycarbonate membrane to improve its gas separation properties |
| 05/16/1990 | EP0153928B1 In-line filter |
| 05/15/1990 | US4925459 Using molecular sieve zeolite |
| 05/09/1990 | EP0367363A2 Compositions and process for separating fluid mixtures |
| 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. |
| 05/09/1990 | CA2002459A1 Process for treating a liquid-wet polycarbonate membrane to improve its gas separation properties |
| 05/08/1990 | US4923901 Membranes with bound oligonucleotides and peptides |
| 05/08/1990 | US4923680 Two polymer layers |
| 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 | 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 |
| 05/02/1990 | EP0366237A2 Siloxane-grafted membranes |
| 05/02/1990 | EP0366228A1 Process of making ultrathin-skinned asymmetric membranes by immiscible solvents treatment |
| 05/02/1990 | EP0217874B1 Rapid vapour transport through unwetted porous barriers |
| 05/02/1990 | EP0143812B1 Formation of porous membranes |
| 05/02/1990 | CN1041708A Porous anodic aluminium oxide membranes |
| 05/01/1990 | US4921654 Blocking functional groups by reaction with epoxy containing polymer, filter for biological fluids |
| 05/01/1990 | US4921612 Asymmetrically-wettable porous membrane process |
| 04/25/1990 | EP0365112A2 Multi-layered laminates of microporous films |
| 04/25/1990 | EP0364628A1 Gas, isotope, and liquid separations by membranes |
| 04/24/1990 | US4920193 Polyhenylene ether, polysulfone |
| 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 | US4919694 Selective gas permeation membranes and method of manufacturing them |
| 04/19/1990 | CA2000018A1 Spectacular break-through in gas, isotope and liquid separations and a revolutionary advance in and a master key for membrane technology and science |
| 04/18/1990 | EP0363364A1 Preparation of porous aramide membranes |
| 04/17/1990 | US4917799 Polyester fibers surface roughened by solvent |
| 04/17/1990 | US4917793 Polytetrafluoroethylene coated with crosslinked polymer |
| 04/11/1990 | EP0363123A1 Porous anodic aluminium oxide membranes |
| 04/11/1990 | EP0362917A1 Membrane assembly |
| 04/10/1990 | US4915839 Nylon fiber used for microfiltration of biological liquids |
| 04/10/1990 | EP0299043A4 Microporous asymmetric polyamide membranes. |
| 04/04/1990 | EP0361814A2 Fluid treatment system having low affinity for proteinaceous materials |
| 04/03/1990 | US4913864 Mixing, kneading, extrusion mixture of polymer powder and liquid |
| 04/03/1990 | US4913818 Hygroscopic electrolyte with a dryness to increase the flux |
| 04/03/1990 | CA2000056A1 Porous anodic aluminium oxide membranes |
| 03/28/1990 | EP0359834A1 Manufacture and use of composite membranes |
| 03/28/1990 | CN1040745A Process of making and using polyamide membranes useful for water softening |
| 03/27/1990 | US4911844 Pressurization using semipermeable membrane |
| 03/21/1990 | EP0160050B1 Substituted aliphatic polyamide porous membranes |
| 03/20/1990 | US4909989 Porous hydrophobic membrane and silica |