Patents
Sitemap › B01 - Physical or chemical processes or apparatus in general › B01D - Separation › B01D 71 - Semi-permeable membranes for separation processes or apparatus characterised by the material; Manufacturing processes specially adapted therefor
Patents for B01D 71 - Semi-permeable membranes for separation processes or apparatus characterised by the material; Manufacturing processes specially adapted therefor (23,060)
10/1989
10/31/1989US4877421 Heat treatment to remove impurities
10/25/1989EP0338074A1 Treatment of permeable membranes
10/25/1989EP0338004A1 Polymer with betaine structure, solution diffusion membrane, process for their manufacture and use.
10/25/1989EP0325653A4 Preparation of titanium ceramic membranes.
10/24/1989US4876403 Process for the recovery of alcohols using a perfluorinated ionomer membrane
10/24/1989US4876009 Polyamide with tetrakis/aminomethyl/methane; high flux, chlorine resistance
10/24/1989US4875908 Separation with permselective membrane
10/18/1989EP0337626A1 Membranes
10/18/1989EP0337002A1 Highly soluble aromatic polyimides
10/18/1989EP0337001A1 Polyimide gas separation membranes
10/18/1989EP0337000A2 Reactive posttreatment for gas separation membranes
10/18/1989EP0336999A2 Reactive posttreatment for gas separation membranes
10/17/1989US4874735 Bilayer electronically conductive polymers and process for their production
10/17/1989US4874567 Microporous membranes from polypropylene
10/17/1989US4874522 Polysulfone hollow fiber membrane and process for making the same
10/17/1989US4874401 Gas separation membranes from bisphenol AF polycarbonates and polyestercarbonates
10/11/1989EP0336241A2 Composite membranes, process for their production and their use
10/11/1989EP0303684A4 Methods of making biocompatible nucleophilic material.
10/11/1989EP0299063A4 Hydrophilic article and method of producing same.
10/10/1989US4873047 Wetting with phosphoric acid before rolling to desired shapes, then drying
10/10/1989US4873034 Cooling polyolefin solution before extrusion to form gel-like sheet; extracting the volatile solvent, stretching
10/10/1989US4873033 Crosslinked monomolecular film containing surfactant onto support
10/10/1989US4872991 Treatment of water
10/10/1989US4872984 Desalting aqueous solutions
10/10/1989US4872983 Biocompatible cellulose dialysis membrane with increased adsorption of beta-2-microglobulin
10/10/1989US4872982 Multilayer hollow fiber with coating having different permeability
10/04/1989EP0335805A2 Method of manufacturing porous membrane and porous membrane manufactured by the same method
10/04/1989EP0335667A2 Method of recovery of dewaxing aid using asymmetric polyimide ultrafiltration membrane
10/03/1989US4871820 Alpha-fluoroacrylic acid polymer and its use
10/03/1989US4871494 Dissolving hydrophobic polymers using lewis acid and lewis base solvent system
10/03/1989US4871461 Polymer composite membrane
10/03/1989US4871378 For gas or vapor separations
09/1989
09/27/1989EP0334547A2 Adjusting charge ratio of liquid mixtures
09/26/1989CA1260655A1 Porous metal article and method of making
09/26/1989CA1260409A1 Porous material, and tubular filter made from said material
09/21/1989WO1989008489A1 Membrane structure and method for the manufacture thereof
09/21/1989WO1989008488A1 Porous hollow carbon fiber film and method of manufacturing the same
09/20/1989EP0332789A1 Filter membrane and process for its preparation
09/20/1989EP0332788A1 Process for treating polluted oil-in-water emulsions or microemulsions
09/19/1989US4868249 Chemical resistance
09/19/1989US4868062 Vapor permeable poly(etherimide) ester elastomer films
09/19/1989US4867934 Production of hollow nylon fibers
09/13/1989EP0331846A2 Separation of organic liquids
09/13/1989EP0331702A1 Apparatus for drying a wet gas
09/12/1989US4866155 Polester of bis(2-(hydroxyphenyl)-hexafluoroisopropyl)diphenyl ether
09/12/1989US4866099 Membrane
09/12/1989US4865742 Method of treating polluted oil-in-water emulsions or microemulsions
09/12/1989US4865739 Process for producing a porous mineral membrane on a mineral support
09/12/1989US4865630 Porous membrane for use in reaction process
09/08/1989WO1989007970A1 Reversible mechanochemical engines comprised of bioelastomers capable of modulable inverse temperature transitions for the interconversion of chemical and mechanical work
09/07/1989DE3901947A1 Modified cellulose for biocompatible dialysis membranes II and process for production thereof
09/07/1989DE3901946A1 Modified cellulose for biocompatible dialysis membranes III and process for production thereof
09/07/1989DE3901945A1 Modified cellulose for biocompatible dialysis membranes IV and process for production thereof
09/06/1989EP0331298A2 Substituted aromatic polymers
09/05/1989US4863761 Continuous process for making coated composite hollow fiber membranes
09/05/1989US4863604 Microporous asymmetric polyfluorocarbon membranes
09/05/1989US4863496 Reactive posttreatment for gas separation membranes
09/05/1989CA1259030A1 Cross flow filtration
09/05/1989CA1258994A1 Semipermeable composite membrane
08/1989
08/30/1989EP0330134A1 Modified cellulose for biocompatible dialysis membranes IV, and method for its preparation
08/30/1989EP0330106A1 Modified cellulose for biocompatible dialysis membranes II, and method for its preparation
08/30/1989EP0330076A2 Continuous process for making coated composite hollow fiber membranes
08/30/1989EP0330072A2 Semipermeable membrane for separating fluids, process for preparing and using the membrane for microfiltration, distillation and special fabrics
08/29/1989US4861628 Thin film composite membrane prepared by suspension deposition
08/29/1989US4861486 Immobilized inorganic diffusion barriers and the use thereof in the separation of small molecular species from a solution
08/29/1989US4861480 Organomineral semipermeable membrane and its production process
08/29/1989US4861455 Electrode membrane
08/23/1989CN1034889A Rapid recoverable ptfe and process for its manufacture
08/22/1989US4859384 Novel polyamide reverse osmosis membranes
08/22/1989US4859339 Microporous membranes of syndiotactic vinylaromatic polymers
08/22/1989US4859338 Porous steel foil with layer of shaped oxides
08/22/1989US4859288 Porous anodic aluminum oxide films
08/22/1989US4859215 Polymeric membrane for gas separation
08/22/1989CA1258736A1 Preparation of substituted polysulfones by metalation
08/17/1989DE3804554A1 Polyphenyleneiminocarbonyliminophenylenes as membrane polymers
08/16/1989EP0328012A2 Microporous asymmetric membranes of syndiotactic vinylaromatic polymers and processes for preparing the same
08/16/1989EP0327687A2 Ultrafiltration membranes
08/15/1989US4857363 Process for preparation of semipermeable composite membrane
08/15/1989US4857201 Reverse osmosis cellulose and cellulosic membranes prepared by repeated drying and rewetting
08/15/1989US4857080 Ultrathin composite metal membranes
08/15/1989US4857079 Co-poly (imide ether) copolymer from diaminated polyalkyleneglycol
08/15/1989US4857078 Process for separating higher hydrocarbons from natural or produced gas streams
08/15/1989CA1258436A1 Mat structure for use in filtration devices
08/15/1989CA1258435A1 Cartridge with stress relieving member
08/09/1989EP0327025A1 Porous membrane filter having fluid impermeable places and their use
08/09/1989CN1034491A Gas dehydration membrane apparatus
08/08/1989US4855163 Method of making polyvinylidene difluoride structure
08/08/1989US4855162 Polytetrafluoroethylene coating of polymer surfaces
08/08/1989US4855048 Air dried cellulose acetate membranes
08/02/1989EP0326360A2 Process for selectively separating water vapour from a gaseous mixture
08/02/1989EP0326083A2 Vapor permselective membrane
08/02/1989EP0326076A2 Air dried cellulose acetate membranes
08/02/1989EP0325962A2 Macroporous asymetric hydrophilic polyaramide membrane
08/02/1989EP0325752A1 Micro/ultrafiltration membranes of defined pore size and process for their manufacturing by means of pulsed laser irradiation
08/02/1989EP0325653A1 Preparation of titanium ceramic membranes
08/01/1989US4853127 Microporous membrane
08/01/1989US4853122 P-xylylenediamide/diimide composite RO membranes
08/01/1989US4853001 Porous inorganic siliceous-containing gas enriching material and process of manufacture and use
07/1989
07/27/1989DE3801528A1 Membrane, process for the production thereof and use of the membrane
07/25/1989US4851505 Highly soluble aromatic polyimides
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