| Patents for B01D 71 - Semi-permeable membranes for separation processes or apparatus characterised by the material; Manufacturing processes specially adapted therefor (23,060) |
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| 11/04/1981 | EP0039179A2 Improvements in or relating to porous glass |
| 10/28/1981 | EP0038695A1 Treatment of reverse osmosis membranes |
| 10/21/1981 | EP0037836A1 Polyvinylidene fluoride resin hollow filament microfilter and process for producing same |
| 10/14/1981 | EP0037730A2 Asymmetric ultrafiltration membrane and production thereof |
| 10/14/1981 | EP0037394A1 A device for removal of substances from a liquid. |
| 10/07/1981 | EP0037185A1 A semipermeable membrane |
| 10/07/1981 | EP0037181A1 Compatible polymer blend compositions in the form of films comprising polyalkylene oxide and aromatic polyethersulphone |
| 10/07/1981 | EP0036947A1 Method for preparing a membrane of a film-forming non-sulfonated sulfone polymer |
| 10/06/1981 | US4293420 Treatment of reverse osmosis membranes |
| 09/29/1981 | US4292417 Crosslinked sulfated polyether |
| 09/23/1981 | EP0036315A2 Anisotropic membranes |
| 09/22/1981 | US4290987 Plasmaphoresis |
| 09/22/1981 | CA1109474A1 Polymerisable disulphimide derivatives containing maleic imide groups and their use |
| 09/08/1981 | CA1108361A1 Ultrafiltration membranes based on heteroaromatic polymers |
| 09/02/1981 | EP0034630A1 Separation device of codierite ceramic and alpha-alumina. |
| 08/25/1981 | US4286015 Polyaryl ether sulfone semipermeable membrane and process for producing same |
| 08/25/1981 | CA1107656A1 Hemodialysis membrane with included absorbent particles |
| 08/25/1981 | CA1107467A1 Polycarbonate membranes for use in hemodialysis |
| 08/18/1981 | US4284594 Method of manufacturing hollow fiber |
| 08/18/1981 | CA1107424A1 Permselective membranes and polymeric solution for making same |
| 08/18/1981 | CA1107203A1 Multicomponent membranes for gas separation |
| 08/18/1981 | CA1107020A1 Cellulose acetate hollow fiber and method for making same |
| 08/11/1981 | US4283359 Process for producing polyacrylonitrile reverse osmotic membranes |
| 07/28/1981 | US4280970 Polyoxyethylene grafted membrane materials with grafting links derived from a diisocyanate |
| 07/21/1981 | US4279855 Method for the casting of ultrathin polymer membranes |
| 07/21/1981 | US4279846 Process for preparing semipermeable membrane having selective permeability |
| 07/21/1981 | US4279795 Anticoagulants |
| 07/21/1981 | US4279752 Polyvinyl alcohol semi-permeable membrane and method for producing same |
| 07/08/1981 | EP0031730A2 The improved semipermeable composite membranes and process for their production |
| 07/08/1981 | EP0031725A2 Process for producing an ultrathin solid membrane and its use for concentrating a specified gas in a gaseous mixture |
| 07/08/1981 | EP0031724A2 Reinforced membranes, process and apparatus for making them, and use thereof as ion-exchange membranes in chlor-alkali cells or as catalysts |
| 07/07/1981 | US4277429 Production of asymmetric porous film materials |
| 07/07/1981 | US4277344 Interfacially synthesized reverse osmosis membrane |
| 07/07/1981 | CA1104748A1 Semipermeable membranes of polyamides |
| 06/30/1981 | US4276172 Cellulosic membrane for blood dialysis |
| 06/30/1981 | EP0015293A4 Method and apparatus for producing hollow microspheres. |
| 06/30/1981 | CA1104008A1 Hydrophilic porous structures and process for production thereof |
| 06/30/1981 | CA1103866A1 Hollow fiber membranes of ethylene copolymers and process for use |
| 06/23/1981 | US4274965 Hemodialysis |
| 06/17/1981 | EP0030451A2 Method for recovering efficiency of semipermeable membrane |
| 06/16/1981 | US4273903 Hydrophilic, membranes |
| 06/16/1981 | CA1103227A1 Liquid membrane process for uranium recovery |
| 06/16/1981 | CA1103174A1 Porous ceramic barrier support and process for preparing the same |
| 06/16/1981 | CA1103105A1 Method of manufacturing supports for porous filters |
| 06/16/1981 | CA1102972A1 Semipermeable membranes of copolyamides |
| 06/09/1981 | US4272378 Semipermeable membrane |
| 06/09/1981 | US4272377 Castor oil, trimethylolpropane, crosslinking |
| 06/03/1981 | EP0029633A2 Polyarylethersulphone copolymers |
| 05/26/1981 | US4269967 Semipermeable membranes of aromatic disulfimide containing polyamides |
| 05/26/1981 | US4269713 Ethylene-vinyl alcohol copolymer membrane and a method for producing the same |
| 05/19/1981 | US4268662 Process for improving semipermeable membranes by treating with protic acids or inorganic salts |
| 05/19/1981 | US4268650 Sulphonated polyaryletherketones |
| 05/19/1981 | US4268463 Method of producing a film of high molecular substance |
| 05/19/1981 | US4268278 Inorganic anisotropic hollow fibers |
| 05/19/1981 | CA1101161A1 Semipermeable membranes of copolyamides |
| 05/12/1981 | US4267295 Polymeric compositions and hydrogels formed therefrom |
| 05/06/1981 | EP0028126A1 Material produced from cross-linked ionic chitin derivative, its preparation and use |
| 05/06/1981 | EP0027920A1 Integral asymmetric ultrafiltration membrane |
| 05/05/1981 | US4265959 Process for producing semipermeable membranes |
| 05/05/1981 | US4265745 Crosslinked polyepoxy compound and polyamino compound and a microporous substrate provides flexibility and chemical resistance |
| 04/21/1981 | CA1099464A1 Asymmetric porous film materials and process for producing same |
| 04/21/1981 | CA1099462A1 Process of preparing a permselective membrane |
| 04/16/1981 | WO1981000969A1 Polyvinylidene fluoride resin hollow filament microfilter and process for producing same |
| 04/14/1981 | US4261871 Carboxyl-modified polycaprolactone, polyepoxide |
| 04/14/1981 | US4261832 Membranes with preselected pore types for separation processes |
| 04/08/1981 | EP0026576A1 Permselective membrane |
| 04/08/1981 | EP0026399A1 Porous semipermeable cellulose acetate membranes modified by ionic groups, process for their production and their use |
| 04/07/1981 | US4260652 Preparation of permselective composite membrane |
| 04/01/1981 | EP0025973A2 Porous semipermeable membrane based on polyacrylonitrile modified by amidoxime groups, process for its preparation and their use |
| 03/31/1981 | US4259183 Reverse osmosis membrane |
| 03/17/1981 | CA1097542A1 Bipolar membranes and method |
| 03/11/1981 | EP0024600A1 Polycarbonate-polyether-copolymer membrane, process for its production and use thereof |
| 03/10/1981 | CA1097448A1 Water-insoluble hydrophilic copolymers |
| 03/05/1981 | WO1981000523A1 Separation device of cordierite ceramic and alpha-alumina |
| 03/05/1981 | WO1981000522A1 Gas-permeable membrane,method of making it and blood oxygenator based on the use thereof |
| 03/03/1981 | US4253963 With hydrophobic synthetic silicic acid as wetting agent |
| 03/03/1981 | CA1096565A1 Method of reversibly making soluble or easily dispersible insoluble polymers |
| 03/03/1981 | CA1096556A1 Flexible microporous cellulosic membranes and methods of formation and use thereof |
| 02/24/1981 | US4252779 Synthetic imogolite |
| 02/24/1981 | US4252652 Disulfimide comonomer |
| 02/24/1981 | CA1096317A1 Separation device of rigid porous inorganic hollow filament and use thereof |
| 02/17/1981 | US4251605 Dried porous acrylonitrile polymer membrane, process for producing same and separators made therefrom |
| 02/17/1981 | US4251377 Separation device of cordierite ceramic and α-alumina |
| 02/11/1981 | EP0023789A2 Process for preparing porous acylated chitin derivative and use of said derivative |
| 02/10/1981 | US4250029 Coated membranes |
| 02/05/1981 | WO1981000217A1 Process for selectively separating water-soluble valuable materials from an aqueous solution containing same |
| 02/04/1981 | EP0023406A1 Process for preparing aromatic polyimide semipermeable membranes |
| 02/03/1981 | US4249000 Semipermeable membranes for reverse osmosis |
| 02/03/1981 | US4248924 Asymmetric porous film materials and process for producing same |
| 02/03/1981 | US4248913 Casting solution of polyvinylidene fluoride and polyvinyl acetate which hydrolyzed |
| 02/03/1981 | CA1094982A1 Single film, high performance bipolar membrane |
| 02/03/1981 | CA1094956A1 Color removal with polyethyleneimine-coated polysulfone semipermeable membrane |
| 02/03/1981 | CA1094778A1 Synthetic imogolite |
| 01/28/1981 | EP0022827A1 Reverse osmosis membrane |
| 01/20/1981 | US4246366 Mixtures of glycidylated hydantoins and polyhydric phenols and the use thereof for the preparation of plastics |
| 01/20/1981 | US4246092 Method and apparatus for the performance of selective electrodialysis |
| 01/13/1981 | US4244817 Process for producing semipermeable membrane |
| 01/13/1981 | CA1093735A1 Aromatic polymers containing a nitrogen-containing ring group, and process for preparation thereof |
| 01/07/1981 | EP0021756A1 Selective adsorption process and system |
| 01/07/1981 | EP0021750A1 Production of spherically shaped material made of chitin derivative |