| 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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| 01/15/1991 | US4985147 Liquid separation membrane for pervaporation |
| 01/15/1991 | US4985138 Process for treating a charge containing dewaxing solvent and dewaxed oil |
| 01/15/1991 | US4985127 Electrodialytic conversion of multivalent metal salts using sulfonate ions |
| 01/15/1991 | CA2021165A1 Isotropic or anisotropic microporous syndiotactic polystyrene membranes and processes for preparation |
| 01/13/1991 | CA2020029A1 Device and method for separation of plasma from blood and determination of blood analytes |
| 01/12/1991 | CA2019865A1 Device and method for separation of fluid components for component testing |
| 01/10/1991 | WO1991000135A1 Membrane filtration apparatus |
| 01/10/1991 | WO1990012637A3 Electrodialytic water splitting process for the treatment of aqueous electrolytes |
| 01/09/1991 | EP0406846A2 Environmentally safe method for the removal of residual polyethers from aqueous waste streams |
| 01/08/1991 | US4983338 Upgrading naphtha streams, trimerization of polyurethane prepolymer |
| 01/08/1991 | US4983305 Power recovery pump turbine |
| 01/08/1991 | US4983303 Method of separating a particular component from its liquid solution |
| 01/08/1991 | US4983301 Method and apparatus for treating fluids containing foreign materials by membrane filter equipment |
| 01/08/1991 | US4983288 Filter element with membrane-type filter material |
| 01/06/1991 | CA2020452A1 Environmentally safe method for the removal of residual polyethers from aqueous waste streams |
| 01/02/1991 | EP0405619A1 A process for treating a chlorine-containing effluent and and apparatus therefor |
| 01/02/1991 | CN1048207A Method for processing organic waste and apparatus therefor |
| 01/01/1991 | US4982051 Separation of furfural/middle distillate streams |
| 01/01/1991 | US4981594 Waste water purification system |
| 01/01/1991 | US4981569 Electric-field emulsion-breaking device |
| 01/01/1991 | US4981157 Shut off valve |
| 12/27/1990 | WO1990015660A1 Bag-like filter |
| 12/27/1990 | WO1990015659A1 Process for removing ionizable impurities from non-aqueous fluids |
| 12/27/1990 | EP0404425A1 Method for the preparation of a substance capable of proliferating bifidobacteria growth |
| 12/27/1990 | EP0404416A1 Transition metal exchanged ionomer membrane for hydrocarbon separation |
| 12/27/1990 | EP0404390A1 Reverse osmosis concentration of juice products with improved flavor |
| 12/27/1990 | EP0404057A1 Concentration of solution by the reverse osmosis process |
| 12/27/1990 | EP0403679A1 Multi-well filtration test apparatus |
| 12/27/1990 | EP0336961A4 Purified water supply system |
| 12/27/1990 | CA1278264C Water purification device |
| 12/25/1990 | US4980297 Device for the membrane separation of the components of a liquid sample |
| 12/25/1990 | US4980066 Multiple membrane separation systems |
| 12/25/1990 | US4980056 Micororganism-free water supply system |
| 12/21/1990 | CA2018418A1 Transition metal-exchanged ionomer membrane for hydrocarbon separation |
| 12/20/1990 | DE3918430A1 Sorption and membrane solvent vapour sepn. processes - are combined in multi-wall structure |
| 12/20/1990 | CA2019126A1 Method for the preparation of a substance capable of proliferating bifidobacteria growth and the substance |
| 12/19/1990 | EP0403031A2 Fractionation system and method for cellular suspensions |
| 12/19/1990 | EP0402611A1 Process for performing a dialysis operation using a magnetic weighted clamp |
| 12/19/1990 | EP0402590A1 Removal of trace contamination from water |
| 12/19/1990 | EP0402540A1 Process for concentrating aqueous solutions of hydroxylammonium nitrate |
| 12/19/1990 | EP0215898B1 Liquid membrane system for the removal of nitrate from water |
| 12/19/1990 | CN1047812A Treatment for reverse osmosis membranes |
| 12/18/1990 | US4978550 Carbonation, pressurization |
| 12/18/1990 | US4978454 Separating a mixture of two dispersed phases into separate streams; ultrafiltration, permeate-retentate recycle |
| 12/18/1990 | US4978453 Removal before surgery and returned afterwards; filtration, storage |
| 12/13/1990 | WO1990014877A1 Minimizing electrical resistance of bipolar membrane by limiting carbon dioxide uptake by solution |
| 12/13/1990 | WO1990014850A1 Management of parameters relating to a dialysis treatment |
| 12/12/1990 | EP0402121A1 Process to make juice products with improved flavor |
| 12/12/1990 | EP0401964A2 Treatment for reverse osmosis membranes |
| 12/12/1990 | EP0401519A1 Method for electrochemical treatment of porous building materials, particularly for drying and re-alkalization |
| 12/12/1990 | CN2067182U Plate ultrafilter with side split flow film chamber |
| 12/12/1990 | CN1047632A Process for removal of nox and sox from gas streams using water-soluble, polymeric chelate of polyvalent metal and membrane separation means |
| 12/12/1990 | CN1010751B Semi-permeable membranes comprising predominantly polycarbonates derived from tetrahalobisphenols |
| 12/11/1990 | US4976926 Medical equipment for chemical or biological analysis of a clinical nature |
| 12/11/1990 | US4976876 Point-of-use membrane filtration system |
| 12/11/1990 | US4976869 Composite semipermeable membranes and method of making same |
| 12/11/1990 | US4976868 Polyester membranes for aromatics/saturates separation |
| 12/11/1990 | US4976867 Test module containing fiber loops connected to pressurized feed liquid and immersed in immiscible extractant |
| 12/11/1990 | US4976866 Concentric tubular membrane device and process useful in ion exchange or absorbent processes |
| 12/11/1990 | US4976838 Method for purification of bases from materials comprising base and salt |
| 12/11/1990 | US4976832 Method for making arsenic acid |
| 12/07/1990 | CA2018105A1 Process to make juice products with improved flavor |
| 12/07/1990 | CA2018104A1 Reverse osmosis concentration of juice products with improved flavor |
| 12/07/1990 | CA2014614A1 Treatment for reverse osmosis membranes |
| 12/05/1990 | EP0142567B1 Control apparatus for reverse osmosis process system |
| 12/04/1990 | US4975199 Purifying the waste from contaminated with detergent, biological and/or radioactive material by filtration and ion exchanging |
| 12/04/1990 | US4975185 Portable water purification system |
| 12/01/1990 | WO1990015203A1 Device for electrokinetic desalination of brickwork |
| 12/01/1990 | CA2033167A1 Device for the electrokinetic desalination of masonry |
| 11/29/1990 | WO1990014018A1 Process and device for clarifying liquids, in particular raw juice |
| 11/29/1990 | DE3916745A1 Filter device with tubular cartridge - obtd. by applying controlled gas pressure to ensure steady liq. level rise inside filter casing and to provide even distribution of cake |
| 11/28/1990 | EP0399993A1 Process for the step-wise membrane electrolysis of alkali-sulfate-containing aqueous solutions and plant for carrying out the process |
| 11/28/1990 | EP0399593A1 Process for purifying alkali metal metaborate solutions and alkali metal perborate prepared from these solutions |
| 11/28/1990 | EP0399573A2 Process for recovery of amino acid from aqueous mixtures |
| 11/28/1990 | EP0398968A1 Water purification system |
| 11/28/1990 | EP0225906B1 Improvements in filters |
| 11/27/1990 | US4973434 Immobilized liquid membrane |
| 11/27/1990 | US4973408 Water purification and desalinaiton |
| 11/27/1990 | CA1277007C Liquid level sensor |
| 11/22/1990 | EP0398508A1 A separation membrane for use in a pervaporation process and a separation method thereof |
| 11/22/1990 | EP0398093A2 Composite membranes, process for their production and their use |
| 11/22/1990 | EP0397742A1 Porous article impregnation resin composition, and system for treating impregnation process waste water. |
| 11/22/1990 | CA2016884A1 Process for the purification of alkaline metal metaborate solutions; alkaline metal peroxoborate prepared from these solutions |
| 11/22/1990 | CA2014626A1 Removal of trace contamination from water |
| 11/20/1990 | US4971836 Method for manufacture of hollow fiber membrane type artificial lung |
| 11/20/1990 | US4971714 Detersive system with an improved hardness ion complexing agent |
| 11/20/1990 | US4971699 Nonporous membrane separation layer of a blend of polyvinylalcohol and polyacrylic acid on polysulfone support |
| 11/20/1990 | US4971689 Reverse osmosis water purification system with improved pressure relief value |
| 11/20/1990 | US4971672 Removal of acid from cathodic electrocoating baths by electrodialysis |
| 11/18/1990 | CA2016960A1 Composite membranes, processes for their preparation and their use |
| 11/15/1990 | WO1990011119A3 Membrane separation of ammonium acetate and ammonium hydroxide |
| 11/14/1990 | EP0397332A1 Reverse osmosis system with automatic cycling booster pump therefor |
| 11/14/1990 | EP0397233A2 Dewaxing of dried oil |
| 11/14/1990 | EP0397184A1 Prevention of biofouling of reverse osmosis membranes |
| 11/14/1990 | EP0397098A2 Process for the removal of NOx and SOx from gas streams using a water-soluble polymeric chelate of a polyvalent metal and membrane separation means |
| 11/14/1990 | EP0396928A2 Portable water purification system |
| 11/13/1990 | US4970052 Device for the separation of the lighter fraction from the heavier fraction of a liquid sample |
| 11/13/1990 | US4970001 Flux; nontoxic |
| 11/13/1990 | US4969991 Water purifying and dispensing system |
| 11/13/1990 | US4969983 Apparatus and process for the removal of acidic and basic gases from fluid mixtures using bipolar membranes |