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)
12/1990
12/11/1990US4976901 Microporous membranes from isotactic polystyrene and syndiotactic polystyrene
12/11/1990US4976897 High viscosity ultraviolet curable polymer
12/11/1990US4976868 Polyester membranes for aromatics/saturates separation
12/11/1990US4976859 Dissolving in e-caprolactam
12/11/1990CA1277554C Hydrophilic porous membrane and method for manufacture thereof
12/09/1990CA2018534A1 Process for the preparation of a binary membrane top layer
12/08/1990CA2016564A1 Selectively permeable membrane
12/07/1990CA2014614A1 Treatment for reverse osmosis membranes
12/05/1990EP0401005A1 Amine-modified polyimide membranes
12/05/1990EP0400823A2 Method of separating a mixed hydrogen/hydrogen selenide vapor stream
12/05/1990EP0400812A2 Copolyimide gas separation membranes derived from substituted phenylene diamines and substituted methylene dianilines
12/05/1990EP0400811A1 Copolyimide gas separation membranes derived from substituted methylene dianilines and unsubstituted diamines
12/05/1990EP0400411A2 Aromatic polyethersulphones
12/05/1990EP0400409A2 Aromatic copolyetherketones
12/04/1990US4975228 Process for preparing membranes from tetrahalobisphenol polycarbonates
12/04/1990US4975190 Organic polymer separation membrane having fluorene skeleton and oxygen enrichment device utilizing same
12/01/1990CA2017831A1 Amine-modified polyimide membranes
12/01/1990CA2015423A1 Copolyimide gas separation membranes derived from substituted phenylene diamines and substituted methylene dianilines
12/01/1990CA2015422A1 Copolyimide gas separation membranes derived from substituted methylene dianilines and unsubstituted diamines
11/1990
11/29/1990WO1990014149A1 Surface fluorination of membranes
11/28/1990EP0399833A1 Novel solid multi-component membranes, electrochemical reactor and use of membranes and reactor for oxidation reactions
11/28/1990EP0399568A2 Hydrophilic porous membrane
11/28/1990CN1010556B Method for shaping anodic aluminium oxide sheet
11/27/1990US4973714 Halogenated 1,3-dioxolanes and derivatives
11/27/1990US4973606 Membranes of organic polymers which contain crystalline carrier compounds, and their preparation
11/27/1990US4973435 Method of producing porous membranes of sinterable refractory metal oxides
11/22/1990EP0398601A1 Hydrophobic membranes
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
11/20/1990US4972287 Having a solenoidal energizing coil
11/20/1990US4971699 Nonporous membrane separation layer of a blend of polyvinylalcohol and polyacrylic acid on polysulfone support
11/20/1990US4971696 Inorganic porous membrane
11/20/1990US4971695 Sulfonated hexafluoro bis-a polysulfone membranes and process for fluid separations
11/18/1990CA2016960A1 Composite membranes, processes for their preparation and their use
11/15/1990WO1990013353A1 Cross-linked gas selective membranes
11/14/1990EP0397216A1 Composite membrane
11/14/1990CN1046858A Semipermeable membranes based on specified 4, 4'-(1h-alkylidene) bis 2,3,6-trialkylphenol
11/14/1990CN1010380B Composite membrane
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
11/13/1990CA1276361C Sulphonated polyaryletherketone solutions for semi-permeable membranes
11/13/1990CA1276360C Polymer solutions
11/13/1990CA1276359C Semi-permeable membrane of sulphonated polyarylether sulphones
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
11/06/1990US4968733 Dissolving polymer in caprolactam as primary solvent
11/06/1990US4968470 Containing silicon or germanium
11/06/1990US4968467 Corrosion resistance
11/06/1990US4968430 Composite membranes, processes for their preparation and their use
11/06/1990US4968426 Fine alpha alumina ultrafiltration membranes
11/06/1990US4968331 Polyesters
11/01/1990WO1990012607A1 Antithrombotic blood treating system
10/1990
10/31/1990EP0395184A1 Modified membrane
10/31/1990EP0394505A1 Crosslinkable, sulfonated, aromatic polyamides and polyureas
10/31/1990EP0394449A1 Porous hollow carbon fiber film and method of manufacturing the same
10/31/1990CN1046472A Chlorine-resistant semipermeable membranes
10/30/1990US4966613 Method of producing effective porous glass shapes
10/28/1990CA2015465A1 Modified membrane
10/24/1990EP0394193A2 Coated membranes
10/24/1990EP0394038A2 Microporous support layer with interfacially polymerized copolyamide membrane thereon
10/24/1990EP0263468B1 Ceramic filter membrane and process for the preparation thereof
10/23/1990US4965291 Method of manufacturing porous membrane and porous membrane manufactured by the same method
10/23/1990US4964991 Flat permeable membrane and for manufacture thereof
10/23/1990US4964990 Filtration membranes and method of making the same
10/23/1990US4964989 Membranes with low protein adsorbability
10/23/1990US4964890 Aromatic polyether ketones
10/23/1990US4964887 Process for separating methane using permeable membrane
10/20/1990CA2014802A1 Microporous support layer with interfacially polymerized copolyamide membrane thereon
10/19/1990WO1990012638A1 Method of producing modified porous membrane
10/19/1990CA2029879A1 Process for preparing modified porous membrane
10/18/1990WO1990011821A1 Process for the preparation of chlorine-resistant polyester semipermeable membranes
10/17/1990EP0392982A2 Solvent stable membranes
10/17/1990EP0392738A1 Micro- and nano-porous metallic structures
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
10/16/1990US4963303 Dissolving polyimide in solvent; adding pore forming agent; casting thin layer; quenching
10/16/1990US4963266 Crosslinked polymer membrane
10/16/1990US4963165 Composite membrane, method of preparation and use
10/14/1990CA2014524A1 Micro- and nano-porous metallic structures
10/11/1990CA2014234A1 Process for the preparation of chlorine-resistant polyester semipermeable membranes
10/10/1990EP0391699A1 Pervaporation method of selectively separating water from an organic material aqueous solution through aromatic imide polymer asymmetric membrane
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
10/10/1990CN1009901B Prepn. of reganerated cellulose porous membrane by copper amonia method
10/09/1990US4962271 Permselective membranes
10/09/1990US4962140 Process for producing cellulosic dialysis membranes having improved biocompatibility and device for carrying out the process
10/09/1990US4961855 Dehydration of organic oxygenates
10/08/1990WO1990011814A1 Cationic charge modified filter media and use thereof
10/08/1990CA2049949A1 Cationic charge modified filter media and use thereof
10/04/1990WO1990011120A1 Ultrafiltration membrane
10/04/1990DE3909601A1 Use of special polycarbonates for the production of consumer goods
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
09/25/1990US4959151 Pervaporation method of separating liquid organic compound mixture through aromatic imide polymer asymmetric membrane
09/25/1990US4959150 Filter with hydroxyacrylic ester coating
09/25/1990US4959082 Polycarbonate gas separation membranes containing substituted benzenes and processes for making and using the same
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