| 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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| 03/27/1991 | EP0418432A1 Supported hydrophilic membrane |
| 03/27/1991 | CN2073772U Bidirectional ultrafiltration membrane tube |
| 03/26/1991 | US5002590 Gases, support fibers of high air permeability |
| 03/21/1991 | DE4001654C1 Tubular membrane for micro-filtration of suspensions, etc. - produced from wire material of metal, plastic or glass, etc., with compressive force exerted to maintain spacings |
| 03/20/1991 | EP0418082A1 Membrane fabrication |
| 03/20/1991 | EP0417908A2 Membrane |
| 03/20/1991 | EP0417541A2 Process of preparing a protein-oriented membrane |
| 03/20/1991 | EP0417525A1 Membrane filter reinforced with textile material, process for its manufacture and use thereof |
| 03/20/1991 | CN1049980A Supported hydrophilic membrane |
| 03/20/1991 | CN1012039B Composite membranes for enhanced fluid separation |
| 03/19/1991 | CA1281625C Waterproof article and method of, making a waterproof article |
| 03/16/1991 | WO1991004092A1 Membrane fabrication |
| 03/16/1991 | CA2040409A1 Membrane fabrication |
| 03/16/1991 | CA2025209A1 Membrane |
| 03/13/1991 | CN1049799A High flux semipermeable membranes |
| 03/12/1991 | CA1281246C Polymer membrane for proton driven ion transport |
| 03/06/1991 | CA2024575A1 Hydrophilic membrane for use in ultrafiltration or microfiltration and method of preparation |
| 03/05/1991 | CA2007799A1 Supported hydrophilic membrane |
| 03/05/1991 | CA1280866C Process for forming film |
| 03/01/1991 | WO1991003311A1 High flux semipermeable membranes |
| 02/28/1991 | DE3927787A1 Composite membrane contg. thermoplastic polymer - useful in pervaporation and gas separation processes |
| 02/27/1991 | EP0414098A2 Filter element and method and device for its production |
| 02/27/1991 | EP0413858A1 Method of treating dilute aqueous solution |
| 02/26/1991 | CA1280564C Hollow fiber |
| 02/24/1991 | CA2023691A1 Composite membrane, its use and processes for pervaporation and gas separation using this composite membrane |
| 02/20/1991 | EP0413552A1 Asymmetric porous polyamide membranes |
| 02/20/1991 | EP0413415A1 Carboxylic acids and derivates thereof |
| 02/20/1991 | CN1049296A Separating membrane and separation method |
| 02/19/1991 | US4994335 Lithium battery with polypropylene film; for filtration, gas exchanging |
| 02/16/1991 | WO1991002577A1 Blotting methods using polyaldehyde activated membranes |
| 02/16/1991 | CA2059549A1 Blotting methods using polyaldehyde activated membranes |
| 02/16/1991 | CA2021579A1 Asymmetric porous polyamide membranes |
| 02/13/1991 | EP0412507A1 Process for fractionating high-molecular products by hollow particles |
| 02/13/1991 | CN1049108A Extrusion of hollow fibre membranes |
| 02/12/1991 | US4992332 Pore walls coated with water insoluble cellulose polymer |
| 02/12/1991 | US4992221 Asymmetric gas separation membranes having improved strength |
| 02/12/1991 | US4992178 Inorganic ultrafiltration of microfiltration membrane modified by a hydrophilic polymer, its preparation process and its use for the separation of proteins |
| 02/12/1991 | US4992176 Dehydration of organic oxygenates |
| 02/12/1991 | US4992175 Method for improving the separation properties of semi-permeable membranes and membranes accordingly improved |
| 02/12/1991 | US4992172 Polyaldehyde activation microporous membrane |
| 02/12/1991 | CA1280042C Membrane type artificial lung and method for manufacture thereof |
| 02/12/1991 | CA1280041C Pervaporation separation of ethanol-water mixtures using polyacrylic acid composite membranes |
| 02/10/1991 | CA2022924A1 Separating membrane and separation method |
| 02/07/1991 | WO1991001339A1 Film, fiber, and microporous membranes prepared from poly(etheretherketone) dissolved in high boiling point polar organic solvents |
| 02/07/1991 | WO1991001177A1 Membrane for extracting unsaturated hydrocarbons and process for obtaining it |
| 02/07/1991 | WO1991001176A1 Membrane for separating liquid mixtures of substances by pervaporation |
| 02/05/1991 | US4990255 Composite membranes for fluid separations |
| 02/05/1991 | US4990252 Stable membranes from sulfonated polyarylethers |
| 02/05/1991 | US4990165 Permeable membranes for enhanced gas separation |
| 01/30/1991 | EP0410357A2 Membrane having hydrophilic surface |
| 01/30/1991 | EP0410323A2 Immobilization of proteins and peptides on insoluble supports |
| 01/24/1991 | DE3924102A1 Membran zum austrag ungesaettigter kohlenwasserstoffe sowie verfahren zu ihrer herstellung Membrane to the material outlet of unsaturated hydrocarbons and process for their production |
| 01/23/1991 | EP0409416A2 Method of producing a membrane |
| 01/23/1991 | EP0409265A2 Composite polymeric membranes for gas separation and their preparation and use |
| 01/23/1991 | EP0408769A1 Deaerating film and deaerating method |
| 01/23/1991 | EP0408688A1 Porous membranes. |
| 01/23/1991 | EP0302928B1 Inorganic filtration membrane modified for protein separation |
| 01/23/1991 | CN1048664A Process for preparation of chlorine-resistant polyester semipermeable membranes |
| 01/22/1991 | CA1279271C Cross-flow filtration |
| 01/21/1991 | CA2021551A1 Composite polymeric membranes for the preparation of mixtures of gases and the method for preparation the same |
| 01/20/1991 | CA2020845A1 Tubular membrane |
| 01/16/1991 | EP0407900A2 Flat or capillary membrane manufactured from a mixture of polyvinylidene fluoride and a second by chemical reaction hydrophilable polymer |
| 01/16/1991 | EP0407684A1 Process for the preparation of microporous film or hollow fibre membranes from polyetheretherketones dissolved in high boiling point polar organic solvents |
| 01/16/1991 | EP0407665A1 Affinity membranes having pendant groups and processes for the preparation and use thereof |
| 01/16/1991 | CN1011202B Composite membrane |
| 01/16/1991 | CN1011201B Alkali resistant hyperfiltration membrane |
| 01/15/1991 | US4985145 Semipermeable membranes |
| 01/15/1991 | US4985138 Process for treating a charge containing dewaxing solvent and dewaxed oil |
| 01/15/1991 | US4985053 Gas separation membrane |
| 01/14/1991 | CA2009836A1 Film fiber, and microporous membranes of poly(etheretherketone)dissolved in high boiling point polar organic solvents |
| 01/09/1991 | EP0406485A1 A method for the removal of leukocytes from a leukocyte-containing suspension and filter unit for use with the method |
| 01/08/1991 | US4983434 Filter laminates |
| 01/08/1991 | US4983291 Reverse osmosis, desalination, coating support with polyamine, reacting with polyacyl halide, polysulfonyl halide or polyisocyanate |
| 01/08/1991 | US4983288 Filter element with membrane-type filter material |
| 01/01/1991 | US4981590 Composite ceramic micropermeable membrane, process and apparatus for producing such membrane |
| 12/27/1990 | EP0404416A1 Transition metal exchanged ionomer membrane for hydrocarbon separation |
| 12/25/1990 | US4980235 Process for preparing non-porous membrane layers |
| 12/25/1990 | US4980069 Process for production of a semi-permeable membrane, a membrane manufactured by said process and the use of such a membrane for gas or liquid separation |
| 12/25/1990 | US4980061 Polymerization of polyamide in microporous hollow support |
| 12/21/1990 | CA2018418A1 Transition metal-exchanged ionomer membrane for hydrocarbon separation |
| 12/20/1990 | DE3918430A1 Sorption and membrane solvent vapour sepn. processes - are combined in multi-wall structure |
| 12/18/1990 | US4978573 Pinhole-free |
| 12/18/1990 | US4978455 P-xylylenediamide/diimide composite RO membranes |
| 12/18/1990 | US4978451 Supported hydrophilic membrane |
| 12/12/1990 | EP0402196A2 Hydrophilic porous membrane and process for preparing the same |
| 12/12/1990 | EP0401486A1 Selectively permeable membrane |
| 12/12/1990 | CN1010750B Hollow fibrous membrane of cellulose made by soloent process |
| 12/11/1990 | US4977242 Ultra fine polymer particle, composite material thereof and methods of preparation thereof |
| 12/11/1990 | US4976897 High viscosity ultraviolet curable polymer |
| 12/11/1990 | US4976869 Composite semipermeable membranes and method of making same |
| 12/11/1990 | US4976860 Conjugated polymer-cation exchanger composite membrane |
| 12/11/1990 | US4976859 Dissolving in e-caprolactam |
| 12/11/1990 | US4976856 Process for preparing non-porous, selective membrane layers |
| 12/08/1990 | CA2016564A1 Selectively permeable membrane |
| 12/05/1990 | EP0382736A4 Receptor membranes |
| 12/04/1990 | US4975228 Process for preparing membranes from tetrahalobisphenol polycarbonates |
| 12/04/1990 | US4975190 Organic polymer separation membrane having fluorene skeleton and oxygen enrichment device utilizing same |
| 11/28/1990 | EP0225906B1 Improvements in filters |
| 11/27/1990 | US4973606 Membranes of organic polymers which contain crystalline carrier compounds, and their preparation |
| 11/27/1990 | US4973434 Immobilized liquid membrane |