| Patents for B01D 71 - Semi-permeable membranes for separation processes or apparatus characterised by the material; Manufacturing processes specially adapted therefor (23,060) |
|---|
| 09/24/1991 | US5051114 Polymers of perfluoro-2,2-dimethyl-1,3-dioxole for membranes |
| 09/24/1991 | US5051113 Membrane of a polymer of perfluoro-2,2-dimethyl-1,3-dioxole for air intakes in engines |
| 09/24/1991 | CA1289312C Composite semipermeable membrane |
| 09/22/1991 | CA2037095A1 Gas separation material |
| 09/19/1991 | WO1991013714A1 Process for manufacturing metallic or ceramic materials |
| 09/19/1991 | DE4033227A1 Metallic or ceramic article prodn. - by moulding or casting film-forming material contg. metals or ceramic raw materials |
| 09/18/1991 | EP0446947A2 Gas separating asymmetric membrane |
| 09/18/1991 | EP0446471A1 Process for making a microfiltration, ultrafiltration, pervaporation or reverse osmosis membrane for suspensions, emulsions or gas separation |
| 09/17/1991 | US5049281 Multi-block polymer comprising a first prepolymer, made by combining epoxy with diamine, chain extended with a compatible second prepolymer, the membrane made therefrom and its use in separations |
| 09/17/1991 | US5049169 Oxygen, nitrogen selectivity |
| 09/12/1991 | DE4007383A1 Hydraulic micro:filtration membrane of polysulphone prepn. - by casting film from soln. of polysulphone contg. polyvinyl-pyrrolidone then crosslinking latter in alkali bath |
| 09/11/1991 | EP0445853A1 Hydrophilic membrane, process for producing a hydrophilic membrane |
| 09/11/1991 | CN1054380A Semipermeale membranes based on polyesters of tetrabromobiphenol a |
| 09/10/1991 | CA1288562C Formation of porous membranes |
| 09/10/1991 | CA1288561C Aldehyde cross-linked porous membranes |
| 09/10/1991 | CA1288560C Substituted aliphatic polyamide porous membranes |
| 09/05/1991 | WO1991012886A1 Immobilized polyethylene oxide star molecules for bioapplications |
| 09/05/1991 | WO1991012879A1 Inorganic membranes and a process for making inorganic membranes |
| 09/04/1991 | EP0444690A2 Semipermeable membranes based on polyesters of tetrabromobisphenol A |
| 09/03/1991 | US5045357 Process for preparing a membranous gas separator |
| 09/03/1991 | US5045354 Production of supported thin film membranes |
| 09/03/1991 | US5045093 Gas separating membranes from polyimide polymers and a process for using the same |
| 09/02/1991 | CA2037348A1 Semipermeable membranes based on polyesters of tetrabromobisphenol a |
| 08/28/1991 | CN1054079A Process for purifing solution or suspension of polyorganophosphazene by membranes |
| 08/28/1991 | CN1054016A Selective air penetrating film and its preparing method |
| 08/27/1991 | US5043112 Process for forming articles comprising poly(phenylene sulfide) (PPS) |
| 08/27/1991 | US5043069 Filtration device having hardened gum formed-in-place membranes |
| 08/27/1991 | US5042993 Gas separating membranes from polyimide polymers |
| 08/27/1991 | US5042992 Gas separation material |
| 08/27/1991 | CA1288057C Cross flow microfilter |
| 08/21/1991 | EP0442785A1 Process for purification of polyorganophosphazene solutions or suspensions by means of membranes |
| 08/21/1991 | EP0442677A2 Process for dehydration of gases |
| 08/21/1991 | EP0442557A1 Composite membrane and process for producing same |
| 08/21/1991 | EP0442410A1 Membrane device for filtration, separation or catalytic reaction |
| 08/20/1991 | US5041226 Separating with an agent comprising aliphatic ester of polysaccharide |
| 08/20/1991 | US5041225 Coating internal and external surfaces of membrane with a complex of a water soluble polymer and a complexing agent; protein affinity |
| 08/20/1991 | CA1287712C Method for forming polymer films using a removable substrate |
| 08/14/1991 | CN1013478B Permeable membrans for enhanced gas separation |
| 08/14/1991 | CA2036160A1 Process for the purification of solutions or suspensions of polyorganophosphazene by use of membranes |
| 08/13/1991 | US5039422 Separating aromatic hydrocarbons from nonaromatic hydrocarbons by selective permability under pervaporation or perstraction conditions |
| 08/13/1991 | US5039421 Solvent stable membranes |
| 08/13/1991 | US5039420 Hydrophilic semipermeable membranes based on copolymers of acrylonitrile and hydroxyalkyl esters of (meth) acrylic acid |
| 08/13/1991 | US5039418 Membrane made from a multi-block polymer comprising an oxazolidone prepolymer chain extended with a compatible second prepolymer and its use in separations |
| 08/13/1991 | US5039417 Membrane made from a multi-block polymer comprising an imide or amide-acid prepolymer chain extended with a compatible second prepolymer and its use in separations |
| 08/13/1991 | CA2036122A1 Process for dehydration of gases and composite permeable membranes therefor |
| 08/11/1991 | CA2035360A1 Multilayer membrane and process of manufacturing the same |
| 08/08/1991 | WO1991011250A1 Composite semipermeable membrane and production thereof |
| 08/08/1991 | DE4004153C1 Multilayered membrane with high sepn. performance - comprises carrier layer of polyamide, polyvinylidene-di:fluoride polyester or glass fibres porous supply and PVA sepn. layer |
| 08/07/1991 | EP0439905A1 Separation of furfural/middle distillate streams |
| 08/06/1991 | US5037931 Addition polymerization of acrylamide, acrylic acid, 2-methoxy ethyl ester and lignin |
| 08/06/1991 | US5037916 Electroconductivity, oxidation resistance; for use in electrodes, solid electrolytes and permselective membranes |
| 08/06/1991 | US5037554 Selectively permeable membrane |
| 08/06/1991 | US5037457 Sterile hydrophobic polytetrafluoroethylene membrane laminate |
| 08/06/1991 | CA1287442C High performance anion-exchange chromatographic packing composition |
| 07/31/1991 | EP0438902A2 Electrochemical reactors and multicomponent membranes useful for oxidation reactions |
| 07/31/1991 | CN1053373A Preparation process of polypropylene hollow fiber microporous membrane |
| 07/30/1991 | US5035802 Membrane filter material having excellent organic solvent resistance, method for formation of membrane filter and process for preparation of bismaleimide polymer to be used for membrane filter |
| 07/30/1991 | US5035801 Analysis membranes with improved compatibility |
| 07/30/1991 | CA1287006C Process for the preparation of cellulose film, cellulose film produced thereby, artificial skin graft, and its use |
| 07/25/1991 | WO1991010495A1 Laminated microporous fluorocarbon membrane and fluorocarbon filter cartridge using same |
| 07/24/1991 | EP0437721A1 Process for producing multilayer polytetrafluoroethylene porous membrane and semisintered polytetrafluoroethylene multilayer structure |
| 07/24/1991 | EP0437611A1 Separative membrane made of aromatic polyimide |
| 07/24/1991 | EP0425491A4 Reversible mechanochemical engines comprised of bioelastomers capable of modulable inverse temperature transitions for the interconversion of chemical and mechanical work |
| 07/23/1991 | US5034134 Purification of ethylene glycol-water streams by passing through a membrane |
| 07/23/1991 | US5034130 Mixture of a polyamide and a polyester in a solvent |
| 07/23/1991 | US5034034 Novel aryl carbonate cyanoaryl ether gas separation membranes |
| 07/23/1991 | US5034027 Membranes formed from rigid aromatic polyamides |
| 07/23/1991 | US5034026 Polybenzazole polymers containing indan moieties |
| 07/23/1991 | US5034024 Surfactant treatment of aromatic polyimide gas separation membranes |
| 07/23/1991 | CA1286612C Process for the separation of solvents from hydrocarbons dissolved in said solvents |
| 07/19/1991 | CA2025028A1 Separation of furfural/middle distillate streams |
| 07/17/1991 | EP0436720A1 Hydrolyzed membrane and process for its production |
| 07/16/1991 | US5032331 Method for production of hydrophilic porous membrane of polyvinylidene fluoride |
| 07/16/1991 | US5032282 Porous substrate of crosslinked acrylonitrile polymer coated with first a diazonium polymer and then a crosslinked ionic hydrophilic polymer; reverse osmosis; ultrafiltration; desalting |
| 07/16/1991 | US5032279 Separation of fluids using polyimidesiloxane membrane |
| 07/16/1991 | US5032278 Using a crosslinked polyethylenimine membrane; maintaining pressure drop |
| 07/16/1991 | US5032277 Optical resolution with β-1,4-mannan tribenzoate |
| 07/16/1991 | US5032274 Process for producing fluorocarbon membranes and membrane product |
| 07/16/1991 | US5032149 Surfactant treatment of polyaramide gas separation membranes |
| 07/16/1991 | CA1286065C Formation of continuous pores membrane by treating liquid medium containing protien with reactant |
| 07/13/1991 | WO1991010501A1 Ultrathin-film composite membrane |
| 07/13/1991 | CA2072077A1 Ultrathin-film composite membrane |
| 07/11/1991 | WO1991009670A1 Composite diaphragm, process for producing it and its use |
| 07/10/1991 | EP0436447A1 Asymmetric semipermeable membrane for the treatment of biological liquids |
| 07/10/1991 | EP0436288A2 Membrane system and process for concentrating organic oxygenates |
| 07/10/1991 | EP0436128A1 Composite membranes for separating water from organic compounds containing fluids |
| 07/10/1991 | CN1052797A Process for producing multilayer polytetrafluoroethylene porous memberane and semisintered polytetrafluoroethylene multilayer structure |
| 07/09/1991 | US5030672 Sulfonated polyarylether sulfone |
| 07/09/1991 | US5030355 Polyurethane and/or polyurea alloys; separating aromatics |
| 07/09/1991 | US5030351 Peptization, mixing, dipping, drying and calcining alumina and ceria; ultrafiltration |
| 07/09/1991 | US5030252 Novel benzotrifluoride aryl ether gas separation membranes |
| 07/09/1991 | CA1285722C Reversed phase membranes |
| 07/03/1991 | CN1052618A Asymmetric semipermeable membrane for treatment of biological fluids |
| 07/03/1991 | CA2020533A1 Separation of compositions containing water and organic oxygenates |
| 07/02/1991 | US5028685 Polyesterurethanes, hard and soft segments, membranes for separation of aromatics from saturates |
| 07/02/1991 | US5028436 Membrane preparation and process for separating the dissolved and undissolved constituents of milk |
| 07/02/1991 | US5028337 Coated membranes |
| 07/02/1991 | US5028335 Crystal structure, ultrafiltration, biochemical immobilization, from Bacillus cells |
| 07/02/1991 | US5028332 Hydrophilic material and method of manufacturing |
| 07/02/1991 | US5028329 Process for preparing reverse-osmosis membrane, and membrane obtained with the process |