| 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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| 09/07/1999 | US5948383 Complexing with calcium oxide |
| 09/07/1999 | US5948265 Ion-exchanger, process for production thereof, and process for removal of multiply charged anions employing the ion-exchanger |
| 09/07/1999 | US5948264 Electrolyte circuits |
| 09/01/1999 | EP0938376A1 Adsorbent material selective with respect to metal pollutants, method of preparation and use thereof |
| 09/01/1999 | EP0938356A1 Ion chromatographic method and apparatus using a combined suppressor and eluent generator |
| 09/01/1999 | CN1227509A Modified carbon adsorbents and process for adsorption |
| 08/31/1999 | US5945520 Chromatographic resins and methods for using same |
| 08/31/1999 | US5945170 Process for separating multivalent metal Ions from autodeposition compositions and process for regenerating ion exchange resins useful therewith |
| 08/26/1999 | WO1999042434A2 Method for producing aqueous hydroxylamine solutions which are substantially free of metal ions |
| 08/25/1999 | EP0937707A2 Improved purification and recovery of acetonitrile |
| 08/24/1999 | US5942207 Heating sodium hydroxide, sodium silicate and water; adding more silicate; adding aluminum hydroxide; crystallization to form a silica-enriched molecular seive having rapid and high capacity to complex calcium and magnesium ions; brightness |
| 08/24/1999 | US5942122 Method of deodorizing ion-exchanged purified water |
| 08/24/1999 | CA2027275C Process and apparatus for treating ion exchange resin |
| 08/19/1999 | DE19806578A1 Production of aqueous hydroxylamine solution containing essentially no metal ions, used in electronics industry |
| 08/12/1999 | WO1999040228A1 Process for demineralizing a sugar solution |
| 08/12/1999 | WO1999040033A1 Ion exchange and regeneration process |
| 08/12/1999 | WO1999039816A1 Ion separation using a surface-treated xerogel |
| 08/12/1999 | CA2320350A1 Ion separation using a surface-treated xerogel |
| 08/12/1999 | CA2285587A1 Process for demineralizing a sugar solution |
| 08/10/1999 | US5935443 Electrochemically regenerated ion neutralization and concentration devices and systems |
| 08/05/1999 | WO1999038595A1 Large capacity acid or base generator and method of use |
| 08/04/1999 | EP0932646A1 Compositions containing particles of highly fluorinated ion exchange polymer |
| 08/04/1999 | EP0932582A1 Recycle of water from polyvinyl chloride polymerization by treatment with a cation exchange resin |
| 08/03/1999 | US5932511 Perfluorinated ion-exchange microcomposite catalysts modified with Lewis acid |
| 08/03/1999 | US5932187 Process for the preparation of an ultra pure hydrogen peroxide solution by ionic exchange in beds having defined H/D ratios |
| 07/29/1999 | WO1999037628A1 Method for recoverying melamine, ammeline and ammelide from waste liquor in melamine process |
| 07/27/1999 | US5929184 Anticholesterol |
| 07/27/1999 | US5928621 Process for the preparation of an ultra pure solution of hydrogen peroxide by ion exchange with recycling |
| 07/22/1999 | WO1999036358A1 Continuous production of silica via ion exchange |
| 07/21/1999 | EP0930272A2 Method for partial demineralization of water |
| 07/20/1999 | US5926771 Providing apatite-like material precursor, introducing precursor into aqueous solution containing toxic heavy metals and radioactive materials, creating monolithic apatite-like material in which radioactive or toxic material is immobilized |
| 07/20/1999 | US5925284 Mixing cation exchange composition, zirconium and/or titanium containing binder precursor and water, forming shaped article, heating to convert precursor to hydroxy metal oxide |
| 07/19/1999 | CA2224116A1 Zirconium and hafnium separation in chloride solutions using continuous ion exchange chromatography |
| 07/15/1999 | WO1999034843A1 Absorbent polymer compositions having high sorption capacities under an applied pressure |
| 07/15/1999 | CA2318495A1 Absorbent polymer compositions having high sorption capacities under an applied pressure |
| 07/15/1999 | CA2257450A1 Process for the partial desalination of water |
| 07/14/1999 | EP0763199A4 Apparatus/method for electrochemically modifying chromatographic material |
| 07/14/1999 | EP0754083B1 Process for separating material from mixture using displacement chromatography |
| 07/13/1999 | US5922198 Having oil, grease or dissolved mineral contaminants, purification through an ultrafiltration membrane, an activated carbon column and an ion exchange resin |
| 07/08/1999 | WO1999034021A1 Method of producing xylose |
| 07/08/1999 | WO1999033452A2 Amine-containing copolymers as bile acid sequestrants |
| 07/07/1999 | EP0927732A2 Method of producing polytetrahydrofuranehaving terminal hydroxyl groups using ion exchangers. |
| 07/06/1999 | US5919287 Ion exchanging |
| 06/29/1999 | US5916836 Method of manufacture of molecular sieves |
| 06/29/1999 | CA2150076C Bead for removing dissolved metal contaminants |
| 06/23/1999 | EP0923412A1 Composite material based on hexacyanoferrates and polymer, method for making it and use |
| 06/22/1999 | US5914025 Ion chromatographic method and apparatus using ion reflux |
| 06/15/1999 | US5911876 Insitu zeolite filter bed system for the removal of metal contaminants |
| 06/09/1999 | EP0921394A1 Liquid chromatography and column packing material |
| 06/09/1999 | CN1043567C 高岭土衍生物 Kaolin derivatives |
| 06/02/1999 | EP0919570A1 Cation exchangers or chelating agents and process for the preparation thereof |
| 06/02/1999 | EP0919564A2 Process for producing trehalose and sugar alcohols |
| 05/27/1999 | WO1999025449A1 Purification composite and device and method of making and using same |
| 05/25/1999 | US5907037 Sulfonated cellulose; for removal of heavy metal ions from aqueous solutions |
| 05/19/1999 | EP0915736A1 Filter sheet and process for purifying photoresist composition employing the filter sheet |
| 05/19/1999 | EP0814907A4 Polymer sorbent for ion recovery processes |
| 05/19/1999 | CN1043410C Weak acid cationic exchange resin |
| 05/14/1999 | WO1999022933A1 System for extracting soluble heavy metals from liquid solutions |
| 05/11/1999 | US5902833 Deagglomerating with a water-soluble sulfonated polyvinylaromatic polyelectrolyte to maintain anion exchange resin kinetics |
| 05/06/1999 | EP0912240A1 Zeolite containing cation exchangers, methods for preparation, and use |
| 04/29/1999 | WO1999020393A1 Method for separating specific groups of elements from aqueous solutions |
| 04/29/1999 | DE19746480A1 Specific separation of groups of elements from aqueous solution, useful in analysis, material recovery, removing harmful metal ions and purifying water and waste liquor |
| 04/21/1999 | EP0909447A1 Method for cesium removal from radioactive waste liquids and method for producing hexacyanoferrates |
| 04/21/1999 | EP0909212A1 Modified carbon adsorbents and processes for adsorption using the same |
| 04/21/1999 | CN1043013C Iron-exchange recovery method of cobalt and manganese ions in acetate solution |
| 04/07/1999 | EP0696268B1 Ethylene glycol recovery process |
| 04/07/1999 | CN1213328A Method and apparatus for minimizing wastewater discharge |
| 04/06/1999 | US5891417 Zirconium silicate and zirconium germanate molecular sieves and process using the same |
| 04/01/1999 | WO1999015273A1 Ion exchange |
| 04/01/1999 | WO1998016462A9 Treatment of chlorine dioxide generator effluent and feed streams with fixed-resin bed |
| 04/01/1999 | CA2304787A1 Ion exchange |
| 03/30/1999 | US5888472 Zirconium silicate molecular sieves and process using the same |
| 03/30/1999 | CA2039843C Ultra-lightweight, open-pore foamed cellulose materials with large surface areas, having ion-exchangeable functional groups introduced therein |
| 03/24/1999 | CN1211471A Loaded ion-exchange resins, their preparation and uses |
| 03/24/1999 | CN1211460A Process for purification of virtually anhydrous organic liquids |
| 03/23/1999 | US5885925 Titania bound sodium titanate ion exchanger |
| 03/18/1999 | WO1999013116A1 Process for recovery of gold and/or silver |
| 03/18/1999 | WO1999013115A1 Method for reprocessing materials containing precious metals by means of chromatographic separation and fractionation |
| 03/18/1999 | CA2342899A1 Process for recovery of gold and/or silver |
| 03/18/1999 | CA2303046A1 Method for reprocessing materials containing precious metals by means of chromatographic separation and fractionation |
| 03/17/1999 | EP0836553A4 Composite particulate material and process for preparing same |
| 03/17/1999 | CN1210763A Method for producing ion exchanging fiber and its use |
| 03/16/1999 | CA1340438C Cation exchange resins, their production and uses thereof |
| 03/11/1999 | WO1999011351A1 Ion chromatographic method and apparatus using a combined suppressor and eluent generator |
| 03/10/1999 | CN1042434C Crosslinked methacrylic anhydride copolymers |
| 03/04/1999 | WO1999010278A1 Adsorbent for metal ions and method of making and using |
| 02/11/1999 | WO1999006145A1 Process for the preparation of a catalytic microcomposite from a silicate and a highly fluorinated ion exchange resin |
| 02/04/1999 | WO1999004903A1 Process for the purification of nutrients from food process streams |
| 02/03/1999 | EP0802936B1 Crosslinked seeded copolymer beads and process of manufacture |
| 02/02/1999 | US5865994 Bifunctional crown ether-based cation-exchange stationary phase for liquid chromatography |
| 01/28/1999 | WO1999004269A1 High speed chromatographic method for hemoglobin variants screening and quantification of hemoglobins a2 and f |
| 01/28/1999 | WO1999003576A1 Chemically modified micas for removal of cesium salts from aqueous solution |
| 01/27/1999 | EP0893160A1 Loaded ion-exchange resins, their preparation and uses |
| 01/27/1999 | CN1041820C Process for production of acetic acid |
| 01/26/1999 | US5863957 Porous crosslinked polymeric microbeads having cavities joined by interconnecting pores wherein at least some of the cavities at the interior of each microbead communicate with the surface of the bead |
| 01/26/1999 | US5863438 Processes for deionization and demineralization of fluids |
| 01/21/1999 | WO1999002255A1 Composite material based on hexacyanoferrates and polymer, method for making it and use |
| 01/20/1999 | CN1205709A Process for prepn. of very acidic cation exchangers |
| 01/20/1999 | CN1205679A Partially crystalline layered sodium titanate |
| 01/20/1999 | CN1205655A Process for prepn. of free-flowing very acidic cation exchangers |