| Patents for B01J 39 - Cation exchange; Use of material as cation exchangers; Treatment of material for improving the cation exchange properties (4,694) |
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| 03/19/1991 | CA1281675C Product and process for increasing enzyme adsorption |
| 02/19/1991 | US4994191 High speed, selectivity |
| 02/03/1991 | WO1991001805A1 Liquid compositions and supported perfluorinated ion-exchange polymers |
| 02/03/1991 | CA2064187A1 Liquid compositions and supported perfluorinated ion-exchange polymers |
| 01/09/1991 | EP0406648A1 Process for the preparation of weakly acid cation-exchanger resins |
| 01/03/1991 | DE4019840A1 Granular inorganic ion exchanger - with good heat resistance and mechanical strength |
| 01/02/1991 | EP0405978A1 Large-pored molecular sieves and their use as catalysts and ion exchangers |
| 12/26/1990 | CN1011005B Composite ion conductive film |
| 12/25/1990 | US4980067 Polyionene-transformed microporous membrane |
| 12/19/1990 | EP0289543B1 A method for cleansing metal-containing solutions, and apparatus herefor |
| 12/12/1990 | EP0402347A1 Method of removing amines |
| 12/11/1990 | CA1277658C Anionically modified polysaccharides, process for their preparation and the use thereof |
| 12/08/1990 | CA2017689A1 Method of removing amines |
| 11/28/1990 | EP0333757A4 Ion exchange compositions |
| 11/27/1990 | US4973607 Cation exchange resins incorporating antioxidants |
| 11/20/1990 | US4971729 Inorganic ion exchange material |
| 11/13/1990 | US4970344 Reactivation of spent alkanolamine |
| 10/30/1990 | US4966851 Process for isolation of lysozyme and avidin from egg white |
| 10/18/1990 | WO1990011829A1 Process for the elimination of undesirable substances in a liquid without modification of its characteristic composition and device for implementing said process |
| 10/18/1990 | WO1990011825A1 Heavy metal removal filters |
| 10/17/1990 | EP0391934A1 Method of purifying protein |
| 10/16/1990 | US4963436 Coated porous mullite bodies |
| 09/25/1990 | WO1990011143A1 Silicon-containing environment-protective agent adsorbing radioactive metal isotopes and toxic heavy metals and a pharmaceutical composition containing same |
| 09/25/1990 | US4959181 Ion exchange using hydrous uranium dioxide |
| 09/25/1990 | CA2030542A1 Silicon-containing environment-protective agent adsorbing radioactive metal isotopes and toxic heavy metals and a pharmaceutical composition containing same |
| 09/20/1990 | WO1990010873A1 Buffer and reagent system for separating amino acids |
| 09/12/1990 | EP0386845A1 Solid catalyst functionalized with sulfonic groups, process for preparing it and its use |
| 09/05/1990 | EP0385587A1 Ion-exchange composition employing resin attachment to dispersant and method for forming the same |
| 08/29/1990 | CN1009341B Resin and its making method for treatment waste water containing mercury |
| 08/21/1990 | US4950712 Polymers derived from crosslinked polystyrenes and dextrans, their methods of preparation and their applications for the analysis and purification of molecules of biological origin |
| 08/21/1990 | US4950408 Process for removing mercury from a non-polar organic medium |
| 08/14/1990 | US4948814 Ion exchanger based on cross-linked glucomannan |
| 08/01/1990 | EP0305774B1 Ion exchange resin modified by thiazolines |
| 07/25/1990 | EP0167488B1 Ionically modified polysaccharides, process for their preparation and their use |
| 07/11/1990 | EP0377046A1 Fine particles of porous ion-exchange cellulose, process for their production, and affinity carrier |
| 07/03/1990 | CA1271275A1 Sodium-selective cation exchange resins for ammonia- cycle condensate polishing |
| 06/13/1990 | EP0372132A1 Small-pored crystalline titanium molecular sieve zeolites |
| 06/12/1990 | US4933372 Porous rigid resins and process of preparation |
| 06/06/1990 | EP0371746A2 Method of separating proteins |
| 06/06/1990 | EP0371648A1 A continuous displacement chromatographic method and apparatus |
| 05/29/1990 | US4929588 Sodium removal, from brines |
| 05/28/1990 | CA2004093A1 Method of separating proteins |
| 05/23/1990 | CN1008069B Method for removal of hydrogen sulfide from gas mixture |
| 05/22/1990 | CA1269491A1 Recovery of ammoniacal copper with organogels |
| 05/22/1990 | CA1269486A1 Process for preparing improved weak acid resins and porous weak acid resins |
| 05/16/1990 | EP0368092A1 Ion exchange and separation method |
| 05/08/1990 | CA1268867A1 Water-deionizing system |
| 05/02/1990 | EP0366258A1 Process for preparing cation exchange resins having improved stability and cation exchange resins prepared therefrom |
| 05/02/1990 | EP0366252A1 Porous rigid resins and process of preparation |
| 05/01/1990 | CA1268316A1 Crystalline zirconium phosphate and a method of preparing the same |
| 04/10/1990 | US4915843 Continuous displacement chromatographic method |
| 04/04/1990 | EP0361685A1 Ion exchange resins |
| 04/04/1990 | CN1040994A Ion exchange resins having short diffusion paths |
| 04/03/1990 | CA1267494A1 Crystalline 3-layer lithium aluminates |
| 03/28/1990 | CN1040826A Transition metal recovery |
| 03/27/1990 | US4912263 Ionic exchangers modified with thiazolines |
| 03/13/1990 | US4908137 Heavy metal removal process |
| 02/28/1990 | EP0355837A2 Transition metal recovery |
| 02/27/1990 | US4904383 Ion exchange resin beds |
| 02/20/1990 | US4902426 Chromatographic separation of rare earth ions or actinide ions |
| 02/15/1990 | DE3826896A1 Use of ion-exchanging mineral mixtures for sterilising aqueous liquid phases |
| 02/13/1990 | US4900450 Removing residual alkali metal ions from demineralized water |
| 01/31/1990 | EP0352949A1 Ion exchange resin beads and processes for preparing them |
| 01/23/1990 | US4895988 Process for the mutual condensation of aromatic and carbonylic compounds |
| 01/23/1990 | US4895905 Gel-type chelating resins and a process for removal of multi-valent, alkaline earth or heavy metal cations from solutions |
| 01/23/1990 | CA1264722A1 Micro-porous superlattice material |
| 01/16/1990 | US4894477 Cationic exchange resin columns |
| 01/16/1990 | US4894168 Process for the removal of cations of an alkaline earth metal species from aqueous solutions with an ion exchanger material |
| 01/16/1990 | US4894167 Regeneration |
| 01/10/1990 | CN1038662A Organic polymeric material and ion-exchange membrane produced therefrom |
| 01/03/1990 | EP0349102A1 Removing residual alkali metal ions from demineralized water |
| 01/03/1990 | EP0238579B1 Process and agent for water treatment |
| 01/02/1990 | US4891197 Silicophosphoaluminates and related crystalline oxides |
| 12/19/1989 | US4888378 Adsorbers, flatting agents |
| 12/13/1989 | EP0346037A1 Composite ion-exchange compositions for ion chromatography |
| 12/13/1989 | EP0345964A1 Organic polymeric material and ion-exchange membrane produced therefrom |
| 12/12/1989 | US4886598 Liquid membrane coated ion-exchange column solids |
| 12/06/1989 | EP0252958B1 Process for the preparation of equigranular ion exchange resins for analytical and preparative purposes |
| 11/28/1989 | US4883599 Ion exchanging using sulfhydrated cellulose |
| 11/23/1989 | EP0342668A2 Product and process for increasing enzyme adsorption |
| 11/14/1989 | US4880611 Crystalline composition |
| 11/08/1989 | CN1036937A Process for fractionating mixture of rare earth metals by ion exchange |
| 11/02/1989 | EP0339540A1 Process for reducing the content of potassium in fruit juices, fruit nectars and fruit beverages |
| 11/02/1989 | DE3912611A1 Verfahren zur herstellung von synthetischen kationenaustauschharzen mit hohem saeuregrad Process for the manufacture of synthetic resins with a high cation exchange saeuregrad |
| 10/25/1989 | CN1036516A Isolated material |
| 10/24/1989 | US4876036 Process for the extraction of cations and application thereof to the treatment of aqueous effluents |
| 10/19/1989 | WO1989009651A1 Fine particles of porous ion-exchange cellulose, process for their production, and affinity carrier |
| 10/19/1989 | WO1989009643A1 Novel crosslinked cellulose chromatography media |
| 10/18/1989 | EP0337144A1 Separation materials |
| 10/04/1989 | EP0335538A2 Process for fractionating a mixture of rare earth metals by ion exchange |
| 10/03/1989 | US4871779 Ion exchange/chelation resins containing dense star polymers having ion exchange or chelate capabilities |
| 10/03/1989 | CA1262030A1 Production of potassium phosphates by ion exchange |
| 09/27/1989 | EP0333757A1 Process for the chromatographic separation of metal ions. |
| 09/13/1989 | EP0286698B1 Process for removing heavy metal and/or alkali metal cations from aqueous solutions by means of an ion exchange material |
| 09/13/1989 | CN1035481A Method and apparatus for treatment of raw water |
| 09/12/1989 | CA1259270A1 Gas treatment process |
| 09/12/1989 | CA1259196A1 Method for eluting a metal adsorbed on an chelating agent |
| 09/06/1989 | EP0331283A1 High stability porous zirconium oxide spherules |
| 09/05/1989 | US4863612 Apparatus and method for recovering materials from process baths |
| 08/30/1989 | EP0330623A1 Process and apparatus for the discontinuous ion exchange treatment of salt-containing liquids |