| 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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| 06/23/1992 | US5124023 Continuous removal of polynuclear aromatics from hydrocarbon recycle oil |
| 06/18/1992 | CA2055365A1 Pillared interlayered kandite clay compositions |
| 06/02/1992 | US5118716 Demetallization |
| 05/27/1992 | EP0486934A2 Ion exchange fibers and method for manufacturing the same |
| 05/26/1992 | US5116512 Adsorption of pinacolyl methylphosphonofluoridate with polydivinylbenzene |
| 05/22/1992 | WO1992009889A1 Process for preparing carrier for cation exchange liquid chromatography and method of quantitatively determining saccharified hemoglobin using said carrier |
| 05/19/1992 | US5114699 Recovering sulfuric acid for use in wet process phosphoric acid plants and agitation to homogenize and separation of carbon solids |
| 05/19/1992 | US5114473 Transition metal recovery |
| 05/05/1992 | US5110914 Method of separating proteins |
| 04/28/1992 | US5108615 Method for recovery of a metal ion from electroless plating solutions |
| 04/28/1992 | US5108596 Flow pressure-resistant, high strength chromatography absorbers; separation of proteins, enzymes and biological substances |
| 04/14/1992 | US5105051 Production of olefin oligomer lubricants |
| 04/11/1992 | WO1992006918A1 Purification of hydrogen peroxide |
| 04/11/1992 | CA2093791A1 Purification of hydrogen peroxide |
| 04/02/1992 | DE4030913A1 Removing hardness forming and heavy metal ions from water - by treatment with strong acid cation exchanger in sodium form followed by reverse osmosis |
| 02/26/1992 | EP0472144A2 Method for preparation of layered silicates of the magadiite type |
| 02/12/1992 | EP0470662A1 Process for the fine purification of an aqueous sodium chloride solution for membrane electrolysis |
| 02/12/1992 | EP0126775B1 Purification of contaminated liquid |
| 02/11/1992 | US5087373 Process for removing titanium and zirconium from aqueous solutions |
| 01/29/1992 | EP0468951A1 Process for separating aminooxides from aqueous solutions |
| 01/28/1992 | US5084428 Method for enhancing cation-exchange capacity of montmorillonite decreased by fixation of ion |
| 01/22/1992 | EP0467339A1 Water-swellable crosslinked polymer particles and process for their production |
| 01/21/1992 | US5082813 Dehydration |
| 01/21/1992 | US5082569 Ion exchange resin, zeolite |
| 01/14/1992 | US5081160 Sulfonation |
| 01/08/1992 | EP0464513A1 Chromatographic separation of zirconium isotopes with anhydrous readily recyclable eluents |
| 01/08/1992 | EP0464187A1 Coated media for chromatography |
| 01/03/1992 | CA2045893A1 Chromatographic separation of zirconium isotopes with anhydrous readily recyclable eluents |
| 12/19/1991 | DE4019052A1 Removal of concn. of heavy metal ions from aq. soln. - by contacting with opt. neutralised copolymer of ethylene, (meth)acrylic acid and (meth)acrylate ester |
| 12/19/1991 | DE4019050A1 Removal of concn. of heavy metal ions from aq. soln. |
| 12/18/1991 | EP0461822A2 Phosphoric acid-type chelate resin as uranyl ion adsorbent |
| 12/18/1991 | EP0461686A1 Process for separating titanium und zirconium from aqueous solutions |
| 12/18/1991 | EP0461517A1 Process for removing or enriching heavy metals from an aqueous solution |
| 12/18/1991 | EP0461244A1 Cesium-specific phenolic ion exchange resin |
| 12/12/1991 | WO1991018833A1 Large-pored molecular sieves containing at least one octahedral site and tetrahedral sites of at least one type |
| 12/11/1991 | CN1056829A Process for preparation of weak alkali ion exchange resin with homogeneous holoes |
| 12/10/1991 | US5071804 Aluminum enriched chabazite |
| 12/03/1991 | US5069797 O-ethyl s-(2-diisopropylaminoethyl) methylphosphonothiolate |
| 11/28/1991 | WO1991017830A1 Adsorbent medium |
| 11/28/1991 | DE4116278A1 Removal of nitrate(s) from drinking water using ion exchange - regeneration pipe connects anion and cation exchange units and regeneration liq. is produced by reverse osmosis |
| 11/27/1991 | EP0457988A1 Removal of heavy metals from aqueous systems |
| 11/26/1991 | US5068255 Ion exchange resins prepared by sequential monomer addition |
| 11/26/1991 | CA2027250A1 Removal of heavy metals especially lead from aqueous systems containing competing ions utilizing wide-pored molecular sieves of the ets-10 type |
| 11/19/1991 | US5066404 Purification using titania hydrate |
| 11/13/1991 | EP0456382A1 A method for the removal of radioisotope cations from an aqueous environment using modified clinoptilolite |
| 11/10/1991 | CA2041570A1 Modified clinoptilolite as an ion exchange material |
| 11/06/1991 | EP0455403A1 Apparatus and process to regenerate a trivalent chromium bath |
| 10/30/1991 | EP0453604A1 Process for the chromatographic determination of ions |
| 10/29/1991 | CA1291593C Sulfonic derivatives of acylated polyethylenimine bonded phase silicaproducts |
| 10/22/1991 | US5059654 Affinity matrices of modified polysaccharide supports |
| 10/16/1991 | EP0451706A1 Ultra-lightweight, open-pore foamed cellulose materials with large surface areas, having ion-exchangeable functional groups introduced therein |
| 10/08/1991 | US5055197 Treating with an acid cation exchange resin and ultrafiltration |
| 10/01/1991 | US5053139 Removal of heavy metals, especially lead, from aqueous systems containing competing ions utilizing amorphous tin and titanium silicates |
| 10/01/1991 | US5053137 Passing through cation then amion exchange resins |
| 09/24/1991 | US5051202 Treatment of sepiolite with water solution of sodium carbonate or a basic salt |
| 09/10/1991 | US5047438 Crosslinked Addition Copolymer Particles Useful In Chromatography, Adsorption, Ion Exchanging And In Catalysis |
| 09/03/1991 | US5045291 Used in scrubbing petroleum feedstock, salt formation, ion exchanging |
| 09/03/1991 | US5045210 Synthetic Polymer Modified Polysaccharide, Ion Exchange Resins |
| 09/03/1991 | US5045190 Containing surfactant |
| 08/28/1991 | EP0443734A1 Coated zirconium oxide fibers |
| 08/27/1991 | US5043075 Method of removing amines |
| 08/20/1991 | US5041219 Dual chamber water filter |
| 08/20/1991 | US5041079 Method for removing human immunodeficiency virus and/or its related compounds |
| 08/14/1991 | DE4004191A1 Reducing acid losses in retardation plants - for sepg. acids and metal salts using acid-water-air boundary layer in column |
| 08/13/1991 | WO1991012061A1 Dual chamber water filter |
| 08/06/1991 | US5037790 Solid catalyst functionalized with sulfonic groups, process for perparing it and its use |
| 07/26/1991 | WO1991011241A1 Coated media for chromatography |
| 07/17/1991 | EP0436832A1 Process and apparatus for purifying and neutralising exhaust gas condensates |
| 07/11/1991 | WO1991009891A1 Cesium-specific phenolic ion exchange resin |
| 07/09/1991 | US5030352 Adsorption of hydrophilic-hydrophobic molecules onto hydrophobic substrate, then crosslinking to form durable hydrophilic film |
| 07/02/1991 | US5028696 Separation/purification of monoclonal antibodies/proteins |
| 06/26/1991 | EP0434052A2 Modified crystalline aluminosilicate and method of preparing the same |
| 06/25/1991 | US5026420 Ion exchanging to absorb heavy metals |
| 06/25/1991 | CA1285219C Antimicrobial cation exchange composition |
| 06/18/1991 | US5024767 Blend of anion exchanger and polyamide or polyester graft polymer as cation exchanger |
| 06/12/1991 | EP0431370A1 Process for the production of ion exchange resins |
| 06/11/1991 | US5023061 Chromatographic separation of zirconium isotopes with anhydrous readily recyclable eluents |
| 06/05/1991 | EP0430323A1 Silver recovery device |
| 05/29/1991 | EP0429183A1 Regeneration of acidic cationic exchange resin used in the reactivation of spent alkanolamine |
| 05/29/1991 | EP0428984A1 Separation method of amino acids |
| 05/29/1991 | EP0428868A2 Materials for removing suspended impurities |
| 05/28/1991 | US5019269 Polymers derived from crosslinked polystyrenes and dextrans, their methods of preparation and their applications for the analysis and purification of molecules of biological origin |
| 05/22/1991 | EP0427807A1 Buffer and reagent system for separating amino acids |
| 05/15/1991 | EP0264368B1 Process for preparing improved weak acid resins and porous weak acid resins |
| 05/15/1991 | CN1051336A Adsorbent for removing suspended impurities and use thereof |
| 05/14/1991 | US5015453 Crystalline group IVA metal-containing molecular sieve compositions |
| 05/14/1991 | US5015448 Particulate material suitable for selectively separating metal cations from aqueous solutions, process for its production, and use thereof |
| 05/14/1991 | US5015373 High stability porous zirconium oxide spherules |
| 05/07/1991 | CA1283998C Coatable ion exchange resins |
| 04/27/1991 | CA2028427A1 Regeneration of acidic cationic exchange resin used in the reactivation of spent alkanolamine |
| 04/23/1991 | US5010184 Ionically modified agarose |
| 04/23/1991 | CA1283497C Polymer-treated ion exchange resins |
| 04/18/1991 | WO1991004948A1 Highly selective zeolites for removal of ammonium from a wastewater |
| 04/16/1991 | US5008465 Preparing ether by heating alcohol with olefin |
| 04/16/1991 | CA1283091C Solid polyvinyl alcohol-based support able to adsorb lipoproteins and its use for the separation of low density lipoproteins present in a liquid, such as blood plasma |
| 04/16/1991 | CA1283072C Process for the isolation and separation of lysozyme and avidin from eggwhite |
| 04/09/1991 | US5006258 Regeneration of acidic cationic exchange resin used in the reactivation of spent alkanolamine |
| 03/26/1991 | US5002670 Chemical waste treatment |
| 03/20/1991 | EP0417238A1 Silicon-containing environment-protective agent adsorbing radioactive metal isotopes and toxic heavy metals and a pharmaceutical composition containing same. |
| 03/19/1991 | US5001063 Treatment of cellulosic ion exchange composites in hot aqueous medium to increase adsorption of macromolecules |