| Patents for B01D 71 - Semi-permeable membranes for separation processes or apparatus characterised by the material; Manufacturing processes specially adapted therefor (23,060) |
|---|
| 02/12/1991 | CA2023123A1 Gas separation membrane |
| 02/12/1991 | CA1280041C Pervaporation separation of ethanol-water mixtures using polyacrylic acid composite membranes |
| 02/07/1991 | WO1991001340A1 Polyimides comprising substituted benzidines |
| 02/07/1991 | WO1991001339A1 Film, fiber, and microporous membranes prepared from poly(etheretherketone) dissolved in high boiling point polar organic solvents |
| 02/07/1991 | WO1991001177A1 Membrane for extracting unsaturated hydrocarbons and process for obtaining it |
| 02/07/1991 | WO1991001176A1 Membrane for separating liquid mixtures of substances by pervaporation |
| 02/05/1991 | US4990667 Alkylated 1,1-bis(4-aminophenyl)-1-phenyl-2,2,2-trifluoroethanes |
| 02/05/1991 | US4990294 Process for producing fluorocarbon membranes and membrane product |
| 02/05/1991 | US4990275 Separation membrane |
| 02/05/1991 | US4990252 Stable membranes from sulfonated polyarylethers |
| 01/30/1991 | EP0410793A1 Method of gas separation and membranes therefor |
| 01/30/1991 | EP0410357A2 Membrane having hydrophilic surface |
| 01/30/1991 | EP0409950A1 Polymer membranes based on polyvinylidene fluoride |
| 01/30/1991 | EP0409828A1 Process for the recovery of alcohols using a perfluorinated ionomer membrane. |
| 01/30/1991 | CN1011385B Method and apparatus for osmotic distillation |
| 01/29/1991 | US4988795 Polyamide that can be converted to polyimides to form ultrathin heat resistant, chemical resistant films |
| 01/29/1991 | US4988371 Novel alicyclic polyimide gas separation membranes |
| 01/28/1991 | CA2021571A1 Method of gas separation and membranes therefor |
| 01/24/1991 | WO1991000774A1 Separative membrane made of aromatic polyimide |
| 01/24/1991 | DE3924102A1 Membran zum austrag ungesaettigter kohlenwasserstoffe sowie verfahren zu ihrer herstellung Membrane to the material outlet of unsaturated hydrocarbons and process for their production |
| 01/23/1991 | EP0409741A2 Hydrophilic porous material sterilizable with gamma-ray |
| 01/23/1991 | EP0409496A2 Microporous membranes |
| 01/23/1991 | EP0409416A2 Method of producing a membrane |
| 01/23/1991 | EP0409265A2 Composite polymeric membranes for gas separation and their preparation and use |
| 01/23/1991 | EP0408769A1 Deaerating film and deaerating method |
| 01/23/1991 | EP0408688A1 Porous membranes. |
| 01/23/1991 | EP0302928B1 Inorganic filtration membrane modified for protein separation |
| 01/23/1991 | EP0236398B1 Thin microporous layers with open porosity having conduction properties |
| 01/23/1991 | CN1048664A Process for preparation of chlorine-resistant polyester semipermeable membranes |
| 01/22/1991 | US4987219 Heat resistance, chemical resistance, dielectrics |
| 01/22/1991 | US4987216 Filaments, fibers, films, sheets, membranes of very high initial modulus |
| 01/22/1991 | US4987215 Wholly aromatic polyamide, process for preparing same and structure thereof. |
| 01/21/1991 | CA2021575A1 Polycarbonate gas separation membranes containing substituted benzenes and processes for making and using the same |
| 01/21/1991 | CA2021551A1 Composite polymeric membranes for the preparation of mixtures of gases and the method for preparation the same |
| 01/20/1991 | CA2021495A1 Microporous membranes |
| 01/20/1991 | CA2020845A1 Tubular membrane |
| 01/16/1991 | EP0408378A2 Hydrophilic semi-permeable PTFE membranes and their manufacture |
| 01/16/1991 | EP0408319A1 Preparation of poly(phenylene oxide) asymmetric gas separation membranes |
| 01/16/1991 | EP0408125A1 Modified poly(2,6-dimethyl-p-oxyphenylene), a process for its preparation and its use in gas mixture separation membranes |
| 01/16/1991 | EP0408052A1 Porous membrane and production process thereof |
| 01/16/1991 | EP0408046A2 Isotropic or anisotropic microporous syndiotactic polystyrene membranes and processes for preparation |
| 01/16/1991 | EP0408017A2 Delivery systems for quaternary and related compounds |
| 01/16/1991 | EP0407900A2 Flat or capillary membrane manufactured from a mixture of polyvinylidene fluoride and a second by chemical reaction hydrophilable polymer |
| 01/16/1991 | EP0407684A1 Process for the preparation of microporous film or hollow fibre membranes from polyetheretherketones dissolved in high boiling point polar organic solvents |
| 01/16/1991 | EP0407665A1 Affinity membranes having pendant groups and processes for the preparation and use thereof |
| 01/16/1991 | EP0407566A1 Highly air permeable expanded polytetrafluoroethylene membranes and process for making them. |
| 01/16/1991 | CN1011202B Composite membrane |
| 01/16/1991 | CN1011201B Alkali resistant hyperfiltration membrane |
| 01/15/1991 | US4985280 Process for hydrophobization of microbacteria retaining air filter |
| 01/15/1991 | US4985147 Liquid separation membrane for pervaporation |
| 01/15/1991 | US4985145 Semipermeable membranes |
| 01/15/1991 | US4985053 Gas separation membrane |
| 01/15/1991 | CA2021165A1 Isotropic or anisotropic microporous syndiotactic polystyrene membranes and processes for preparation |
| 01/15/1991 | CA1278907C Porous cellulose ester articles having striated surfaces |
| 01/14/1991 | CA2009836A1 Film fiber, and microporous membranes of poly(etheretherketone)dissolved in high boiling point polar organic solvents |
| 01/13/1991 | CA2020963A1 Delivery systems for quaternary and related compounds |
| 01/12/1991 | CA2020796A1 Modified poly (2,6-dimethyl-p-oxyphenylene), a process for its preparation and its use in gas mixture separation membranes |
| 01/12/1991 | CA2020597A1 Preparation of poly(phenylene oxide) asymmetric gas separation membranes |
| 01/09/1991 | EP0407172A1 Aromatic polyimide separation membrane |
| 01/09/1991 | EP0406485A1 A method for the removal of leukocytes from a leukocyte-containing suspension and filter unit for use with the method |
| 01/08/1991 | US4983717 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 |
| 01/08/1991 | US4983434 Filter laminates |
| 01/08/1991 | US4983423 Coating, firing, cooling |
| 01/08/1991 | US4983338 Upgrading naphtha streams, trimerization of polyurethane prepolymer |
| 01/08/1991 | US4983304 Chitosan; pervaporation |
| 01/08/1991 | US4983293 Semipermeable membrane and process for preparing same |
| 01/08/1991 | US4983191 Blend with epoxy resin, separation of oxygen from nitrogen |
| 01/06/1991 | CA2020398A1 Aromatic polyimide separation membrane |
| 01/02/1991 | EP0405288A1 Process and device for obtaining pure oxygen |
| 01/02/1991 | EP0405265A1 Polyarylene sulfide films for gas separation |
| 01/02/1991 | EP0373215A4 Porous inorganic membrane with reactive inorganic binder, and method of forming same |
| 01/02/1991 | CN1048169A Novel solid multi-component membranes, electrochemical reactor and use of membranes and reactor for oxidation reactions |
| 01/01/1991 | US4982051 Separation of furfural/middle distillate streams |
| 01/01/1991 | US4982014 Dihydroxydiphenyl cycloalkanes, their production and their use for the production of high molecular weight polycarbonates |
| 01/01/1991 | US4981960 Modified cellulose for biocompatible dialysis membranes IV and process for preparation thereof |
| 01/01/1991 | US4981959 Modified cellulose for biocompatible dialysis membranes II and process for preparation thereof |
| 01/01/1991 | US4981591 Cationic charge modified filter media |
| 01/01/1991 | US4981590 Composite ceramic micropermeable membrane, process and apparatus for producing such membrane |
| 01/01/1991 | US4981497 Permselective |
| 12/27/1990 | WO1990015661A1 Porous ceramic membrane and method |
| 12/27/1990 | EP0404416A1 Transition metal exchanged ionomer membrane for hydrocarbon separation |
| 12/25/1990 | US4980101 Anisotropic microporous syndiotactic polystyrene membranes and a process for preparing the same |
| 12/25/1990 | US4980063 Compositions useful for preparing cellulose ester membranes for liquid separations |
| 12/25/1990 | US4980062 Inorganic membrane |
| 12/25/1990 | US4979969 Heat resistant porous support |
| 12/21/1990 | CA2018418A1 Transition metal-exchanged ionomer membrane for hydrocarbon separation |
| 12/19/1990 | CN1047812A Treatment for reverse osmosis membranes |
| 12/19/1990 | CN1010861B Porous cellulose ester articles having striated surfaces |
| 12/18/1990 | US4978573 Pinhole-free |
| 12/18/1990 | US4978455 P-xylylenediamide/diimide composite RO membranes |
| 12/18/1990 | US4978451 Supported hydrophilic membrane |
| 12/18/1990 | US4978430 Evaporation, separation of water vapor with polyimide membrane selective permeation |
| 12/16/1990 | WO1990015662A1 Perfluorodioxole membranes |
| 12/12/1990 | EP0402196A2 Hydrophilic porous membrane and process for preparing the same |
| 12/12/1990 | EP0401964A2 Treatment for reverse osmosis membranes |
| 12/12/1990 | EP0401928A1 Process for the preparation of a binary membrane top layer |
| 12/12/1990 | EP0401486A1 Selectively permeable membrane |
| 12/12/1990 | CN1010751B Semi-permeable membranes comprising predominantly polycarbonates derived from tetrahalobisphenols |
| 12/12/1990 | CN1010750B Hollow fibrous membrane of cellulose made by soloent process |
| 12/11/1990 | US4977038 Alloying silver and gold; applying electrochemical potential |