| Patents for B01D 61 - Processes of separation using semi-permeable membranes, e.g. dialysis, osmosis or ultrafiltration; Apparatus, accessories or auxiliary operations specially adapted therefor (28,150) |
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| 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 | EP0037382A2 Granules of dyes and their preparation process |
| 10/06/1981 | US4293409 Artificial kidney dialysate preparation system |
| 10/01/1981 | WO1981002729A1 Arrangement for passing a first liquid close to,but without mixing it with a second liquid,for example an arrangement for sea water desalination |
| 09/29/1981 | US4292181 Use of liquid membrane systems for selective ion transfer |
| 09/22/1981 | CA1109401A1 Air-pressurized ultrafilter feeding concentrate to decanter |
| 09/16/1981 | EP0035788A1 Method and apparatus for the determination of the colloid concentration, i.e. the colloid index of a liquid |
| 09/15/1981 | US4289597 Process for electrodialytically regenerating an electroless plating bath by removing at least a portion of the reacted products |
| 09/08/1981 | US4288326 Rotary shaft driven reverse osmosis method and apparatus |
| 09/08/1981 | CA1108604A1 Process for conditioning an acid hydrolysate of vegetable substances and products thus obtained |
| 09/08/1981 | CA1108555A1 Electrostatic water treatment apparatus |
| 09/02/1981 | EP0034661A1 Method and apparatus for recovering charged ions from solution |
| 09/01/1981 | US4287071 Simultaneous extraction of more than one ion by liquid membrane process |
| 09/01/1981 | CA1108064A1 Pressure filters |
| 08/25/1981 | CA1107658A1 Gasket arrangement for purification apparatus |
| 08/19/1981 | EP0033807A2 Electrode assembly |
| 08/18/1981 | US4284492 Reverse osmosis electrodialysis combined means |
| 08/18/1981 | CA1107020A1 Cellulose acetate hollow fiber and method for making same |
| 08/11/1981 | US4283290 For recovery of dissolved species in aqueous solutions |
| 08/11/1981 | US4283264 Electrolytic cell separator, tubular member component thereof and methods for manufacturing and using such separator and component |
| 07/29/1981 | EP0032578A1 Process and dialysis-installation for the preparation of bilayer-vesicles and their use |
| 07/28/1981 | CA1105842A1 Balanced pressure tubular molecular filtration system |
| 07/14/1981 | US4278548 Control of biological growth in reverse osmosis permeators |
| 07/14/1981 | CA1104870A1 Electrodialysis of acid whey |
| 07/07/1981 | US4277332 Water purifier |
| 07/07/1981 | CA1104507A1 Proportioning dialysis machine for coil and parallel- flow dialyzers |
| 07/01/1981 | EP0030938A1 Blood perfusion units |
| 06/30/1981 | US4276177 High efficiency filtration with impurity concentration and ultrafiltration rejection flow recirculation |
| 06/30/1981 | US4276140 Ion exchanging, desalting |
| 06/30/1981 | CA1104233A1 Blood pressure alarm system with malfunction protection circuitry |
| 06/30/1981 | CA1103866A1 Hollow fiber membranes of ethylene copolymers and process for use |
| 06/23/1981 | US4274956 Extraction process using solid stabilized emulsions |
| 06/16/1981 | CA1103227A1 Liquid membrane process for uranium recovery |
| 06/09/1981 | CA1102711A1 Rotary reverse osmosis apparatus and method |
| 06/03/1981 | EP0029600A1 Process for the separation of fluids by permeation |
| 06/03/1981 | EP0029540A1 Electrodialysis cell stack |
| 06/02/1981 | US4270914 Process for controlling hemicellulose concentration during the mercerization of cellulose |
| 06/02/1981 | CA1102250A1 Fluid purification system |
| 06/02/1981 | CA1102249A1 Fluid filter and method of making same |
| 06/02/1981 | CA1102248A1 Portable hemodialyzer |
| 05/20/1981 | EP0028913A1 Reverse osmosis liquid purification apparatus |
| 05/20/1981 | EP0028837A2 An electrolytic-ultrafiltration apparatus and process for recovering solids from a liquid medium |
| 05/19/1981 | US4268395 Extraction by solid stabilized emulsions |
| 05/19/1981 | US4268350 Method of treating pulp bleaching effluents |
| 05/14/1981 | WO1981001248A1 Process and apparatus for transferring and sterilizing a solution |
| 05/13/1981 | EP0028371A1 Apparatus for the automatic semicontinuous peritoneal dialysis |
| 05/12/1981 | US4267053 Using hollow fibers to remove bacteria and fungi |
| 05/12/1981 | US4267040 Hemodialysis apparatus |
| 05/05/1981 | US4266026 Catalytic process utilizing hollow fiber membranes |
| 05/05/1981 | US4265713 Method and apparatus for distillation |
| 05/05/1981 | CA1100439A1 Combination ion exchange and electrodialysis fluid purification apparatus |
| 04/28/1981 | US4264447 Ultrafiltration membrane assembly and bonding process therefor |
| 04/28/1981 | CA1100094A1 Recovery of dissolved species from aqueous solutions by a liquid membrane technique |
| 04/21/1981 | CA1099647A1 Tubular filter elements with improved side seam seal |
| 04/14/1981 | US4261834 Device and process for removing pyrogens from aqueous solutions |
| 04/14/1981 | US4261833 Method of pretreating raw water for reverse osmosis units |
| 04/14/1981 | US4261829 Apparatus for selective separation of matter through semi-permeable membranes |
| 04/07/1981 | US4260496 Water treatment, conveying |
| 04/07/1981 | CA1098664A1 High performance, quality controlled bipolar membrane |
| 03/31/1981 | US4259189 Novel liquid membrane formulations |
| 03/31/1981 | CA1098485A2 Electrostatic water treatment |
| 03/25/1981 | EP0025735A1 Method of selectively closing the ends of a honeycomb structure |
| 03/24/1981 | US4257259 Continuous analysis of beverages |
| 03/17/1981 | CA1097542A1 Bipolar membranes and method |
| 03/11/1981 | EP0024875A2 Process for controlling the biological fouling of reverse osmosis permeators |
| 03/10/1981 | US4255255 Tubular membrane separation process and apparatus therefor |
| 03/03/1981 | US4253936 Method of preparing a membrane consisting of polyantimonic acid powder and an organic binder |
| 02/24/1981 | CA1096317A1 Separation device of rigid porous inorganic hollow filament and use thereof |
| 02/03/1981 | CA1094982A1 Single film, high performance bipolar membrane |
| 02/03/1981 | CA1094956A1 Color removal with polyethyleneimine-coated polysulfone semipermeable membrane |
| 01/20/1981 | US4246122 Prefilt directing impermeable membrane of varying force exertion |
| 01/20/1981 | US4246092 Method and apparatus for the performance of selective electrodialysis |
| 01/13/1981 | US4244820 Fluid purification system |
| 01/13/1981 | US4244816 Liquid membrane capsule systems resistant to coalescence by means of an irreversible coating |
| 01/07/1981 | EP0022072A1 Method and apparatus for concentrating aqueous sludge by electroosmosis |
| 01/07/1981 | EP0020767A1 Tubular membrane separator |
| 01/07/1981 | EP0020661A1 Process for desalination of sea water. |
| 01/07/1981 | EP0020579A1 Transfer membrane apparatus. |
| 01/06/1981 | US4243536 Cross-flow filtration apparatus |
| 01/06/1981 | US4243523 Water purification process and system |
| 12/30/1980 | US4242193 Layered membrane and processes utilizing same |
| 12/30/1980 | CA1092520A1 Deairing and recirculation systems for dialysis machines |
| 12/24/1980 | WO1980002806A1 Blood perfusion units |
| 12/24/1980 | WO1980002805A1 Process for the treating of and/or removal of substances from a liquid,especially whole blood,and a device and a membrane for the realization of said process |
| 12/23/1980 | US4240912 Stainless steel with head of polytetrafluoroethylene |
| 12/23/1980 | CA1092148A1 Purification process |
| 12/16/1980 | US4239624 Apparatus for membrane filtration having an improved desalting effect |
| 12/16/1980 | US4239506 Use of aqueous, non-sweep liquid during membrane separation |
| 12/16/1980 | CA1091592A1 High surface area permeable membrane |
| 12/11/1980 | WO1980002650A1 Process for concentrating an aqueous sludge by electro-osmosis |
| 12/09/1980 | US4238305 Electrodialytic process for the conversion of impure soda values to sodium hydroxide and carbon dioxide |
| 12/09/1980 | US4237596 Method of converting membrane separation units |
| 12/02/1980 | US4236987 Electrode having membrane with ion selective properties |
| 11/12/1980 | EP0018375A1 Apparatus and process for continuous flow isoelectric focusing. |
| 11/11/1980 | US4233371 Method for the manufacture of an electrochemical cell or battery and battery made by the method |
| 11/11/1980 | US4233146 Cell flow distributors |
| 11/11/1980 | CA1089371A1 Device for the diffusion of substances between two fluids via semipermeable membranes |
| 11/04/1980 | US4231879 Apparatus for selective separation of matter through semi-permeable membranes |
| 10/29/1980 | EP0018128A1 Reverse osmosis method and apparatus |