| 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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| 04/09/1991 | US5006211 Electrodialylic water splitting process for the treatment of aqueous electrolytes |
| 04/09/1991 | US5005430 Automated membrane filter sampler |
| 04/06/1991 | CA2026054A1 Interfacially polymerized membranes for the reverse osmosis separation of organic solvent solutions |
| 04/06/1991 | CA2000281A1 Aromatics-non-aromatics separation by permeation through thermally crosslinked nitrile rubber membranes |
| 04/03/1991 | EP0180599B1 High flux membrane |
| 04/02/1991 | US5004861 Process for pervaporization using membrane separating means |
| 04/02/1991 | US5004535 Water purification system |
| 03/29/1991 | WO1991004940A1 Method and device for producing pure elemental iodine |
| 03/27/1991 | EP0418883A1 Separation of fluids using polyimidesiloxane membrane |
| 03/27/1991 | EP0418517A2 Separating membrane and separation method |
| 03/27/1991 | CN2073771U Concentrated water circulation automatic pole-reversing equipment of electric dialyzator |
| 03/26/1991 | US5002881 Process for the fermentative preparation of organic acids |
| 03/26/1991 | US5002664 Fluid flow control device for R.O. filtration purification systems |
| 03/26/1991 | US5002054 Interstitial filtration and collection device and method for long-term monitoring of physiological constituents of the body |
| 03/26/1991 | CA1282011C Rapid vapour transport through unwetted porous barriers |
| 03/26/1991 | CA1281938C Reverse osmosis system and automatic cycling booster pump therefor |
| 03/22/1991 | CA2025813A1 Separation of fluids using polyimidesiloxane membrane |
| 03/21/1991 | WO1991003309A1 Apparatus and method for removal of liquids |
| 03/20/1991 | EP0417506A1 Electrodeionization and ultraviolet light treatment method for purifying water |
| 03/20/1991 | EP0417389A1 Anti-clogging apparatus and method for maximal flux and prolonged filtration time |
| 03/20/1991 | CN1012039B Composite membranes for enhanced fluid separation |
| 03/19/1991 | US5000922 Sample filtration, separation and dispensing device |
| 03/19/1991 | US5000845 Reverse osmosis system and automatic cycling booster pump therefor |
| 03/19/1991 | US5000843 Culture fluid concentrator |
| 03/19/1991 | US5000832 Purification of aqueous glyoxal solutions |
| 03/13/1991 | EP0416752A2 Polyurethane membranes and their use for the separation of aromatics from non-aromatics |
| 03/13/1991 | EP0416565A1 Method for producing deoxycelluloses |
| 03/13/1991 | EP0416312A2 Method of continuously removing and obtaining ethylene diamine tetraacetic acid (EDTA) from the process water of electroless copper plating |
| 03/13/1991 | CN1011944B Ultrafiltration apparatus |
| 03/12/1991 | US4999107 Separator frame for a two-fluid exchanger device |
| 03/12/1991 | US4999095 Recovery of mixed acids from mixed salts |
| 03/12/1991 | CA1281295C Quick change reverse osmosis assembly |
| 03/07/1991 | WO1991002700A1 Device for dewatering of forest chemistry waste |
| 03/07/1991 | WO1991002584A1 Electrodialytic treatment of aqueous solutions containing amino acids |
| 03/06/1991 | EP0415577A2 Electrodeposition coating system |
| 03/06/1991 | EP0415119A2 Process for continuously removing and recovering complexing compounds from process water |
| 03/05/1991 | US4997906 Crosslinked copolymers of aliphatic polyester diols and dianhydrides |
| 03/05/1991 | US4997676 Microporous matrix with precipitate, pores, channels |
| 03/05/1991 | US4997569 Immobilized-interface solute-transfer process |
| 03/05/1991 | US4997553 Storage and dispensing apparatus for reverse osmosis filtration purification system |
| 03/05/1991 | US4997462 Pervaporation method of selectively separating water from an organic material aqueous solution through aromatic imide polymer asymmetric membrane |
| 02/28/1991 | DE3927787A1 Composite membrane contg. thermoplastic polymer - useful in pervaporation and gas separation processes |
| 02/27/1991 | EP0414082A1 Filter element for treating liquid |
| 02/27/1991 | EP0414006A1 Device for selectively removing plasma components from blood |
| 02/26/1991 | US4995983 Membrane separation process |
| 02/26/1991 | US4995967 Separator for cell-containing liquids |
| 02/26/1991 | US4995956 Method and apparatus to control a salt stream to be treated in an electrodialytic water splitter |
| 02/26/1991 | US4995888 Separation of gas from solvent by membrane technology |
| 02/26/1991 | US4995793 Reverse osmosis system and automatic cycling booster pump therefor |
| 02/24/1991 | CA2023691A1 Composite membrane, its use and processes for pervaporation and gas separation using this composite membrane |
| 02/21/1991 | WO1991001786A1 Leak-proof water processing unit |
| 02/20/1991 | CN1049296A Separating membrane and separation method |
| 02/19/1991 | US4994190 Serial crossflow filtration assembly |
| 02/19/1991 | US4994189 Frequency of oscillatory fluid flow adjustable to enhance molecular diffusion of selected solutes |
| 02/19/1991 | US4994188 Adaptive filtrate flow control system using controlled reduction in filter efficiency |
| 02/19/1991 | US4994184 Ultrafiltration device and process |
| 02/19/1991 | CA1280377C Filter assembly |
| 02/19/1991 | CA1280292C Water sampling system |
| 02/18/1991 | WO1991002555A1 Method and apparatus for effecting the transfer of heat or mass through a membrane involving the use of vortices |
| 02/18/1991 | CA2059539A1 Method and apparatus for effecting the transfer of heat or mass through a membrane involving the use of vorticles |
| 02/15/1991 | EP0434671A4 Liquid separator. |
| 02/13/1991 | CN1049143A Environmentally safe method for the removal of residual polyethers from aqueous waste streams |
| 02/13/1991 | CN1011577B Concentration of solids in suspension |
| 02/12/1991 | US4992641 Apparatus for preparing a machining liquid of an electroerosion machine |
| 02/12/1991 | US4992176 Dehydration of organic oxygenates |
| 02/12/1991 | US4992170 Reverse osmosis filter cartridge assembly |
| 02/12/1991 | CA1280041C Pervaporation separation of ethanol-water mixtures using polyacrylic acid composite membranes |
| 02/10/1991 | CA2022924A1 Separating membrane and separation method |
| 02/10/1991 | CA2020696A1 Isocyanurate crosslinked polyurethane membranes and their use for the separation of aromatics from non-aromatics |
| 02/07/1991 | WO1991001176A1 Membrane for separating liquid mixtures of substances by pervaporation |
| 02/05/1991 | US4990695 Process for purifying crude glycerol |
| 02/05/1991 | US4990350 Reverse osmosis |
| 02/05/1991 | US4990275 Separation membrane |
| 02/05/1991 | US4990248 Reverse osmosis apparatus |
| 02/05/1991 | US4990230 Sealing frames, membranes, end plates; electrodialysis |
| 01/31/1991 | DE4022867A1 Removing pectin from extracted date juice and filtering - using ultrafiltration membrane, avoiding pectin splitting agents or filter aids |
| 01/30/1991 | EP0409828A1 Process for the recovery of alcohols using a perfluorinated ionomer membrane. |
| 01/30/1991 | EP0398968A4 Water purification system |
| 01/30/1991 | CN1011385B Method and apparatus for osmotic distillation |
| 01/29/1991 | US4988525 Process for selective removal of volatile substances from liquids, as well as unit and device for carrying out the process |
| 01/29/1991 | US4988445 Spiral wound filtration system and method of utilizing same |
| 01/29/1991 | US4988444 Prevention of biofouling of reverse osmosis membranes |
| 01/26/1991 | WO1991001267A1 Purification of hydrogen peroxide |
| 01/24/1991 | WO1991000963A1 Liquid pump utilizing reverse osmosis |
| 01/24/1991 | WO1991000766A1 Jig and device for filtration |
| 01/23/1991 | EP0409423A1 Treatment for reducing impurities in aqueous liquor |
| 01/23/1991 | EP0409420A1 Hybrid chromium recovery |
| 01/23/1991 | EP0409065A1 A method of processing silver halide photograhic materials |
| 01/23/1991 | EP0408940A1 Multi-well filtration apparatus |
| 01/23/1991 | CN1048690A Removal of trace contamination from water |
| 01/23/1991 | CN1048689A 便携式水净化系统 Portable water purification system |
| 01/22/1991 | US4987273 Reverse osmosis |
| 01/22/1991 | US4986918 Membrane separation system and method of operation |
| 01/22/1991 | CA1279195C Purification process for aqueous solutions of rare earth salts through liquid-liquid extraction |
| 01/20/1991 | CA2020834A1 Treatment for reducing inpurities in aqueous liquor |
| 01/20/1991 | CA2017196A1 Hybrid chromium recovery process |
| 01/16/1991 | EP0408223A1 Device and method for separation of plasma from blood and determination of blood analytes |
| 01/16/1991 | EP0408222A1 Device and method for separation of fluid components |
| 01/16/1991 | EP0408092A1 Flue gas desulfurization process |
| 01/16/1991 | EP0408046A2 Isotropic or anisotropic microporous syndiotactic polystyrene membranes and processes for preparation |