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)
11/1989
11/29/1989EP0343359A1 Hollow fiber membrane fluid processor
11/29/1989EP0343247A1 Porous polytetrafluoroethylene membrane, separating apparatus using same, and process for their production
11/29/1989EP0193570B1 Device for separating fluid mixtures
11/28/1989US4883594 Purification, mechanical stability, microorganisms
11/28/1989US4883593 Filling pores of cellulose semipermeable membrane with hexane, spraying with water
11/21/1989US4882223 Hollow fibers production method thereof and their applications particularly in the field of membrane-type separations
11/21/1989US4882106 Modification of interior bores of regenerated cellulose hollow fibers; dialysis membranes, preventing complement activation, removing microglobulins
11/21/1989US4881954 Porous support layer, separation layer composite
11/15/1989EP0342026A2 Microporous membranes having increased pore densities and process for making the same
11/15/1989EP0341979A2 Spinneret for the production of a hollow filament within a hollow filament composite fibre having spacing means
11/15/1989EP0341978A2 Hollow fibers having curved spacing members projecting therefrom and spinnerets for their production
11/15/1989EP0341413A2 An adsorber module and adsorber apparatus for whole blood treatment
11/15/1989EP0341309A1 Porous polypropylene membrane and process for its production
11/15/1989EP0341280A1 Process for removing hazardous substances from water or air.
11/15/1989CN1037087A Blood cleaning hollow fiber membrane, method for cleaning blood and apparatus therefor
11/14/1989US4880699 Pinhole-fdree; self-supporting; separation of gases; drug-releasing membranes
11/14/1989US4880545 Multilayer polyepihalohydrin and amine compound polymer, sugars
11/14/1989US4880441 Asymmetric gas separation membranes having graded density skins
11/08/1989EP0340262A1 Semi-permeable membranes with an internal discriminating region
11/08/1989CN1036909A Reactive posttreatment for gas separation membranes
11/08/1989CN1036908A Reactive posttreatment for gas separation membranes
11/07/1989US4879316 Interpenetrating polymer network ion exchange membranes and method for preparing same
10/1989
10/31/1989US4877528 Siloxane-grafted membranes
10/31/1989US4877421 Heat treatment to remove impurities
10/31/1989CA1262536A1 Enhanced bulk porosity of polymer structures via plasma technology
10/25/1989EP0338582A2 Tubesheet for semipermeable membrane devices
10/25/1989EP0338074A1 Treatment of permeable membranes
10/24/1989US4876009 Polyamide with tetrakis/aminomethyl/methane; high flux, chlorine resistance
10/24/1989US4875908 Separation with permselective membrane
10/19/1989WO1989009642A1 Matrix membrane
10/18/1989EP0337499A2 Method for regenerating used gas-permeable films
10/18/1989EP0337000A2 Reactive posttreatment for gas separation membranes
10/18/1989EP0336999A2 Reactive posttreatment for gas separation membranes
10/17/1989US4874522 Polysulfone hollow fiber membrane and process for making the same
10/17/1989US4874516 A ceramic filter for semi-ultrafiltration
10/17/1989US4874514 Tubular element for reverse osmosis water pruification
10/11/1989EP0336535A1 Gas separation by composite solvent-swollen membranes
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.
10/10/1989US4873037 Method for preparing an asymmetric semi-permeable membrane
10/10/1989US4873033 Crosslinked monomolecular film containing surfactant onto support
10/10/1989US4872991 Treatment of water
10/10/1989US4872984 Desalting aqueous solutions
10/10/1989US4872982 Multilayer hollow fiber with coating having different permeability
10/10/1989US4872888 Microporous membrane filter and method of producing same
10/04/1989EP0335614A2 Heterogeneous membranes from highly filled thermoplastic orientable polymers
10/04/1989EP0334998A2 Process for making a microporous film
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
09/27/1989EP0334453A2 A process for preparing non-porous, selective membrane layers
09/26/1989US4869857 Process for producing porous membranes
09/26/1989CA1261564A1 Composite dense membrane and fluid(s) separation process carried out therewith
09/21/1989WO1989008489A1 Membrane structure and method for the manufacture thereof
09/20/1989EP0333284A1 Process for preparing non-porous membrane layers
09/19/1989US4867934 Production of hollow nylon fibers
09/13/1989EP0331846A2 Separation of organic liquids
09/12/1989US4865930 Porosity, ion-impervious polymer substrate, impregnation, ion-conducting polymer, stretching
09/12/1989US4865785 Process for the manufacture of asymmetric, porous membranes, and product thereof
09/12/1989US4865745 Reverse osmosis across a membrane of polyethyleneimine crosslinked with polyisocyanate or polycarbonyl chloride
09/12/1989US4865630 Porous membrane for use in reaction process
09/06/1989EP0331174A1 Leukocyte separator and method of making the same
09/05/1989US4863792 Bonded polyolefins
09/05/1989US4863761 Continuous process for making coated composite hollow fiber membranes
09/05/1989US4863604 Microporous asymmetric polyfluorocarbon membranes
09/05/1989US4863603 Filter unit for separating precipitates containing cholesterol
09/05/1989US4863602 Flexible filter element employing filtering sheets formed with bypass openings
09/05/1989US4863496 Reactive posttreatment for gas separation membranes
09/05/1989CA1258994A1 Semipermeable composite membrane
08/1989
08/30/1989EP0330076A2 Continuous process for making coated composite hollow fiber membranes
08/29/1989US4861661 Co-spun filament within a hollow filament and spinneret for production thereof
08/29/1989US4861628 Thin film composite membrane prepared by suspension deposition
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
08/22/1989US4859535 Porous hollow-fiber
08/22/1989US4859384 Novel polyamide reverse osmosis membranes
08/22/1989CA1258604A1 Liquid membrane
08/15/1989US4857363 Process for preparation of semipermeable composite membrane
08/15/1989US4857196 Porous hollow fiber membrane and a method for the removal of a virus by using the same
08/09/1989EP0327025A1 Porous membrane filter having fluid impermeable places and their use
08/09/1989CN1034491A Gas dehydration membrane apparatus
08/08/1989US4855049 Intersecting pore networks; controlled energy levels; filters
08/02/1989EP0326360A2 Process for selectively separating water vapour from a gaseous mixture
08/02/1989EP0326083A2 Vapor permselective membrane
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
08/01/1989US4853128 Interleaving polymer webs pretreated with steam to avoid shrinkage
08/01/1989US4853122 P-xylylenediamide/diimide composite RO membranes
07/1989
07/27/1989WO1989006566A1 Hollow fiber membrane and fluid processor using the same
07/25/1989US4851210 Blood typing device
07/25/1989US4851127 Novel amine-based presursor compounds and composite membranes thereof
07/25/1989US4851121 Crosslinking surface with organosulfone compound in alkal; water purification; odorless, nonfoaming
07/25/1989US4851120 Anionic polysaccharide separation membranes
07/25/1989US4850847 Spinneret for hollow fibers having curved spacing members projecting therefrom
07/19/1989EP0324675A1 Process for separating the components of a gaseous mixture using a composite membrane
07/19/1989CN1034004A Semi-permeable membranes with internal discriminating region
07/19/1989CN1033942A Device and method for removing leucocyte content from blood and blood component
07/18/1989US4849311 Immobilized electrolyte membrane
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