Patents
Sitemap › B01 - Physical or chemical processes or apparatus in general › B01D - Separation › B01D 69 - Semi-permeable membranes for separation processes or apparatus characterised by their form, structure or properties; Manufacturing processes specially adapted therefor
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)
11/1990
11/27/1990CA1276890C Porous filter media and membrane support means
11/27/1990CA1276844C Supported microporous membrane and method of making
11/22/1990EP0398508A1 A separation membrane for use in a pervaporation process and a separation method thereof
11/22/1990EP0398093A2 Composite membranes, process for their production and their use
11/20/1990US4971699 Nonporous membrane separation layer of a blend of polyvinylalcohol and polyacrylic acid on polysulfone support
11/18/1990CA2016960A1 Composite membranes, processes for their preparation and their use
11/15/1990WO1990011119A3 Membrane separation of ammonium acetate and ammonium hydroxide
11/13/1990US4970034 Casting, precipitation, extrusion
11/13/1990US4970001 Flux; nontoxic
11/13/1990US4969998 Composite semipermeable membrane
11/13/1990US4969997 Fluid-impermeable areas on porous membrane filters and their application
11/07/1990EP0396042A2 The use of chitosan to improve membrane filter performance
11/07/1990EP0135514B1 Cross linked porous membranes
11/07/1990CN1010317B Modified polymeric surfaces and process for preparing same
11/06/1990US4968539 Drug delivery
11/06/1990US4968430 Composite membranes, processes for their preparation and their use
11/01/1990WO1990007545A3 Stabilized microporous materials and hydrogel materials
10/1990
10/31/1990EP0395184A1 Modified membrane
10/31/1990EP0395133A1 A process for preparing a microporous membrane and such a membrane
10/31/1990EP0394997A1 Biospecific membranes incorporating porins and their use
10/31/1990EP0394505A1 Crosslinkable, sulfonated, aromatic polyamides and polyureas
10/31/1990CN1046472A Chlorine-resistant semipermeable membranes
10/30/1990US4966699 Membranes treated with reagent reactive with polar groups
10/28/1990CA2015465A1 Modified membrane
10/24/1990EP0394193A2 Coated membranes
10/24/1990EP0394038A2 Microporous support layer with interfacially polymerized copolyamide membrane thereon
10/23/1990US4964991 Flat permeable membrane and for manufacture thereof
10/23/1990US4964990 Filtration membranes and method of making the same
10/23/1990US4964887 Process for separating methane using permeable membrane
10/20/1990CA2014802A1 Microporous support layer with interfacially polymerized copolyamide membrane thereon
10/18/1990WO1990011821A1 Process for the preparation of chlorine-resistant polyester semipermeable membranes
10/17/1990EP0392982A2 Solvent stable membranes
10/17/1990EP0392395A1 Use of a microporous membrane composed of a polymer substrate and a surface coating of the substrate by a polyacrylic acid- or -methacrylic acid derivative for the filtration of beer
10/17/1990EP0392010A1 Body fluid filter having flat film permeative membranes having protrusions
10/16/1990US4963494 Enzyme immobilization in an anisotropic ultrafiltration membrane
10/16/1990US4963261 Formed by heat fusion of polymer particles; time-release agents; drug delivery
10/16/1990CA1275262C Filters
10/16/1990CA1275207C Hydrophilized membrane of porous hydrophobic material and process for preparing the same
10/11/1990CA2014234A1 Process for the preparation of chlorine-resistant polyester semipermeable membranes
10/10/1990EP0391660A2 Filter laminates
10/10/1990EP0391519A1 P-Xylylenediamide/diimide composite ro membranes
10/10/1990EP0390992A1 Aromatic polyimide double layered hollow filamentary membrane and process for producing same
10/09/1990US4961855 Dehydration of organic oxygenates
10/04/1990WO1990011120A1 Ultrafiltration membrane
10/04/1990WO1990011119A2 Membrane separation of ammonium acetate and ammonium hydroxide
10/03/1990CN1045770A Concentrated ammonium acetate and ammonium hydroxide separation system by thin film distillation
10/03/1990CN1045756A Water purification system using full-automatic dynamically formed membrane
10/02/1990US4960519 Membrane process for separation of organic liquids
09/1990
09/26/1990EP0340262A4 Semi-permeable membranes with an internal discriminating region
09/25/1990US4959132 Preparing in situ electrocatalytic films in solid polymer electrolyte membranes, composite microelectrode structures produced thereby and chloralkali process utilizing the same
09/20/1990WO1990010494A1 Chlorine-resistant semipermeable membranes
09/19/1990EP0388354A1 Composite membrane for gas separation and pervaporation
09/19/1990EP0227832B1 Composite hollow yarn and a process for producing the same
09/18/1990US4957620 Liquid chromatography using microporous hollow fibers
09/18/1990US4957062 Apparatus for plasma surface treating and preparation of membrane layers
09/12/1990EP0386784A2 Permselective membrane and process for producing the same
09/12/1990EP0386763A1 Selective permeable membrane, method of producing and electrode using the same
09/12/1990CN1045232A Filter cleaning
09/11/1990US4956237 Hollow fibers having curved members projecting therefor
09/06/1990CA2007273A1 "p-xylylenediamide/diimide composite ro membranes"
09/05/1990EP0385947A1 Process for enhancing permeability in the separation of gaseous mixtures by a composite membrane, and its use
09/05/1990CN1009432B Variable volume filter of conventrator
09/05/1990CN1009430B Asymmetric gas sepn. membrane comprising aromatic polysulphone
09/04/1990US4954388 Fabric reinforced composite membrane
09/04/1990US4954381 Preparation of porous substrates having well defined morphology
09/04/1990US4954145 Alcohol or polyether, alkali metal salt, amine or hydroxylamine
08/1990
08/29/1990CN1009335B Bipolar membranes and methods of making same
08/28/1990US4952318 Separations of oxygenates
08/23/1990WO1990009230A1 Composite membranes and method of making the same
08/22/1990EP0382736A1 Receptor membranes.
08/21/1990US4950405 Monomolecular film with amphoteric host capable of chemically binding with nucleophilic group on surface
08/21/1990US4950404 Reverse osmosis; water deslination
08/21/1990CA1272945A1 Semipermeable membrane support and process for preparation thereof
08/14/1990US4948507 Interfacially synthesized reverse osmosis membrane containing an amine salt and processes for preparing the same
08/14/1990US4948506 Physicochemically functional ultrathin films by interfacial polymerization
08/09/1990WO1990008586A1 Deaerating film and deaerating method
08/09/1990WO1990006846A3 Irradiated expanded polytetrafluoroethylene composites, and devices using them, and processes for making them
08/08/1990EP0381477A2 Concentration of water-ketone composition
08/08/1990EP0381476A2 Treatment of compositions containing water and organic oxygentates
08/08/1990CN1044411A Continuous prepn. of ion exchange membrane used for different phase
08/03/1990CA2009251A1 Distillation separation membrane and method for membrane distillation separation
08/01/1990EP0380266A1 Filter cleaning
08/01/1990CA2003677A1 Treatment of compositions containing water and organic oxygenates
08/01/1990CA2003676A1 Concentration of water-ketone compositions
07/1990
07/31/1990US4944996 Porous mineral membrane sintered to carbon composite support; mechanical strength, bursting resistance, porosity
07/31/1990US4944879 Multilayer; overcoating with electron beam crosslinked polymer
07/31/1990US4944777 Separating hydrogen from a mixture of substances
07/31/1990CA1272140A1 Separating hydrogen from a mixture of substances
07/31/1990CA1272139A1 Fluid separator, hollow fiber to be used for construction thereof and process for preparation of said hollow fibers
07/31/1990CA1272078A1 Composite membrane for use in gas separation
07/28/1990WO1990008783A1 Receptor membranes and ionophore gating
07/26/1990WO1990008172A1 Support for selective immuno-purification of a liquid and process for treating said support
07/25/1990EP0378684A1 Leucocyte-separating process
07/25/1990CA2008437A1 Filter cleaning
07/24/1990USRE33273 Semipermeable membranes coated with fluorinated pyridinium bromide
07/24/1990US4943373 Oxidation with potassium permanganate
07/24/1990CA1271907A1 Hollow fiber membrane made by melt-spinning polyolefin/filler composition
07/18/1990CN1043949A Improved composite membrance of poly(methyl methacrylate) blends, their manufacture and their use
07/18/1990CN1043885A Improved composite membranes, their manufacture and their use
07/18/1990CN1008793B Membrane artificial lungs and its mfg. method
1 ... 144 145 146 147 148 149 150 151 152 153 154 155 156 157 158 159 160 161 162 163 164 ... 168