| Patents for B01J 45 - Ion-exchange in which a complex or a chelate is formed; Use of material as complex or chelate forming ion-exchangers; Treatment of material for improving the complex or chelate forming ion-exchange properties (1,510) |
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| 01/01/2002 | US6335420 Polyamide ligand-containing polymeric resins and methods of using the same for removing, separating and/or concentrating desired metal ions from solutions |
| 12/27/2001 | WO2001097973A1 Polymeric ion exchange fibers |
| 12/12/2001 | EP1161458A1 Malatyl polysaccharides, their production and their use |
| 12/12/2001 | EP1161299A1 Improvements in and relating to complexants |
| 12/12/2001 | EP0823866B1 Process for separating zinc ions from autodeposition compositions |
| 12/11/2001 | US6329435 Reacting monomer droplets of monovinylaromatic compound and polyvinylaromatic compound to give bead polymer; amidomethylating, converting to aminomethylated bead polymer, reacting with thiourea or its derivative |
| 11/22/2001 | US20010042715 Filtration and purification system for pH neutral solutions |
| 11/08/2001 | US20010037976 Regeneration and reuse of absorption media, zinc hydroxide, ion exchange resin |
| 11/01/2001 | WO2001081365A2 Metal chelating compositions |
| 11/01/2001 | WO2001080964A1 Mipc chromatographic apparatus with improved temperature control |
| 10/25/2001 | US20010033816 Using metal hydroxides |
| 10/23/2001 | US6306301 Enhanced surface entrapment capacity; easy toproduce |
| 10/18/2001 | US20010031233 Binding metal compounds; quantitative stripping |
| 10/04/2001 | WO2001072849A1 Per(3,6-anhydro)cyclodextrin derivatives, preparation and use thereof for separating ions |
| 10/02/2001 | US6297352 Washing solution comprising water or a dilute solution of a water-soluble metal ion chelating agent; novolaks must contain low metal contaminants in advanced microlithographic electronic devices |
| 10/02/2001 | US6296760 Device for the removal and concentration of ionic metal species from water |
| 09/26/2001 | CN1071592C Oxygen selective absorbent |
| 09/20/2001 | WO2001068729A1 Compositions and methods for selectively binding amines or amino acid enantiomers over their counter-enantiomers |
| 09/20/2001 | CA2402241A1 Compositions and methods for selectively binding amines or amino acid enantiomers over their counter-enantiomers |
| 09/13/2001 | US20010021413 Binding to ligands |
| 08/30/2001 | WO2001062669A1 New polyoxometalates and process for immobilization of technetium based thereon |
| 08/09/2001 | US20010011645 Method for reducing metal ion concentration in brine solution |
| 08/08/2001 | EP0906357B1 Absorbent polymers based on polymerisable polyamide derivatives |
| 07/24/2001 | US6265483 Polyazacycloalkanes, tri, tetra- or penta-azamacrocyclic complexes, processes for the production of these substituted or unsubstituted polyazacycloalkanes grafted to a support and uses of polyazacycloalkanes and the aforementioned complexes |
| 07/17/2001 | US6262257 Selective ion- and neutral molecule-binding agents forming supramolecular ensembles, and ion- and neutral molecule-separation agents |
| 07/17/2001 | CA2029021C Pyridine-containing alkoxysilanes bonded to inorganic supports and processes of using the same for removing and concentrating desired ions from solutions |
| 07/12/2001 | WO2001049389A1 Method and apparatus for metal removal by ion exchange |
| 07/10/2001 | US6258277 Composition and method for simultaneously precipitating metal ions from semiconductor wastewater and enhancing microfilter operation |
| 06/26/2001 | US6251272 System and column for performing polynucleotide separations using liquid chromatography |
| 06/21/2001 | WO2001044521A1 A process for the recovery of copper from aqueous solutions containing iodinated organic compounds |
| 06/14/2001 | US20010003481 Process and equipment for recovering developer from photoresist development waste and reusing it |
| 06/12/2001 | US6245389 Using plating solution of nickel hypophosphite |
| 06/05/2001 | US6242581 Immobilized metal ion affinity chromatography purification method using carboxymethylated aspartate ligand complexed with transition metal ion; for binding and elution of proteins having polyhistidine tails |
| 05/30/2001 | CN1297422A Method for producing aqueous hydroxylamine solutions which are substantially free of metal ions |
| 05/22/2001 | US6235198 Process for purification of dimethyl sulphoxide (DMSO) |
| 05/15/2001 | US6232265 Particulate solid supports functionalized with polyhydroxypyridinone ligands |
| 05/02/2001 | EP1094899A1 Method for separation on cation exchangers |
| 04/26/2001 | WO2001029105A1 Material having separating function |
| 04/26/2001 | WO2001029104A1 Organic polymeric material, process for producing the same, and heavy-metal ion remover comprising the same |
| 04/24/2001 | US6221476 Binding metal compounds |
| 04/18/2001 | CN1064667C Carbonylation process for production of carboxylic acid or anhydrides thereof |
| 04/05/2001 | WO2001023067A1 Polyamide-containing ligands covalently bonded to supports, polyamide-containing resins, and methods for removing metals from solutions |
| 04/05/2001 | DE19954402A1 Verfahren zur Herstellung von monodispersen, vernetzten Perlpolymerisaten mit Thioharnstoffgruppen und ihre Verwendung zur Adsorption von Metallverbindungen Process for preparing monodisperse, crosslinked bead polymers having thiourea groups and their use for the adsorption of metal compounds |
| 04/05/2001 | CA2384631A1 Polyamide-containing ligands covalently bonded to supports, polyamide-containing resins, and methods for removing metals from solutions |
| 03/21/2001 | CN1287887A Prepn. art and application of monodisperse ion exchange agent contg. chelate functional group |
| 03/14/2001 | EP0958055A4 Poly n-cyclic aromatic ligands bonded to solid supports for removing and concentrating ions from solutions |
| 03/13/2001 | US6200481 Chelate-forming fiber, process for preparing the same, and use thereof |
| 03/13/2001 | US6200480 Method of purifying photoacid generators for use in photoresist compositions |
| 03/08/2001 | WO2001015806A1 Method and installation for eliminating metal cations from a liquid with polyazacycloalkane resins grafted on a support |
| 03/07/2001 | EP1081717A1 Method for treating radioactive waste |
| 03/07/2001 | CN1286274A Process for preparing monodisperse cross-linked bead polymer having thiourea group, and use thereof |
| 03/01/2001 | WO2001014252A2 Method for reducing metal ion concentration in brine solution |
| 03/01/2001 | WO2001014062A1 Filtration and purification system for ph neutral solutions |
| 03/01/2001 | DE19954399A1 Verfahren zur Herstellung von monodispersen Ionenaustauschern mit chelatisierenden Gruppen und ihre Verwendung Process for the preparation of monodisperse ion exchangers having chelating groups and their use |
| 02/28/2001 | EP1078937A1 Process for the preparation of monodisperse crosslinked bead polymers containing thiourea groups and their use for adsorbing metal compounds |
| 02/28/2001 | EP1078690A2 Method for producing monodispersed ion exchangers with chelating groups and the use thereof |
| 02/27/2001 | CA2316692A1 Process for preparing monodisperse, crosslinked bead polymers having thiourea groups and their use for adsorbing metal compounds |
| 02/27/2001 | CA2316672A1 Process for preparing monodisperse ion exchangers having chelating functional groups and the use thereof |
| 02/14/2001 | CN1062021C Method for reclaiming metal ion from solvent contg metal ion |
| 02/13/2001 | US6187519 Process and equipment for recovering developer from photoresist development waste and reusing it |
| 02/07/2001 | EP0996594A4 Process for the removal of pentavalent arsenic from water |
| 02/01/2001 | DE19900764C1 Malatyl-Polysaccharide, deren Herstellung und Verwendung Malatyl polysaccharides, their preparation and use |
| 01/31/2001 | EP1028845A4 System for extracting soluble heavy metals from liquid solutions |
| 01/25/2001 | WO2001005717A1 Combined oxidation and chelating adsorption system for removal of mercury from water |
| 01/16/2001 | US6174505 Eliminating oxygen from a mixture of gases containing oxygen |
| 01/16/2001 | US6174441 Liquid chromatography system and method, such as matched ion polynucleotide chromatography or slalom chromatography, which enhances the separation of polynucleotides such as dsdna |
| 01/02/2001 | US6168863 Metal chelate-forming fibers, process for producing the same, process for sequestering with the same, and filter produced therefrom |
| 12/26/2000 | US6165367 Which contains interfering anions such as sulfates, nitrates,and carbonates, by capturing the heavy metal such as uranium with a chelating resin containing amino-phosphonic groups, eluting resin with sequestering agent, regenerating |
| 12/21/2000 | WO2000076760A1 Polymeric membranes functionalized with polyhydroxypyridinone ligands |
| 12/21/2000 | WO2000076616A1 Particulate solid supports functionalized with polyhydroxypyridinone ligands |
| 12/06/2000 | EP1056713A2 Method for producing aqueous hydroxylamine solutions which are substantially free of metal ions |
| 11/30/2000 | WO2000071805A1 Metal chelate-forming fiber, process for producing the same, method of trapping metal ion with the fiber, and metal chelate fiber |
| 11/29/2000 | EP1054715A1 Method of purifying photoacid generators for use in photoresist compositions |
| 11/23/2000 | WO2000070012A1 Metal chelating filters and metal chelate filters |
| 11/21/2000 | US6149994 Reaction of amine or carboxy end groups with unsaturated compound, block addition polymerization with unsaturated monomer |
| 11/16/2000 | WO2000067905A1 Chelate-forming porous hollow fiber membrane and method for the recovery of germanium oxide with the same |
| 11/15/2000 | EP1051257A1 Method for preparing polyazacycloalkanes grafted on silica gel and use of grafted compounds |
| 11/09/2000 | WO2000066198A1 Method for removing heavy metals from bone |
| 11/07/2000 | US6143569 Chelators exhibiting triple fluorescence |
| 10/31/2000 | US6139752 Composition and method for selectively removing metal ions from an aqueous solution |
| 10/31/2000 | US6139742 Apparatus comprising chemically activated microporous membrane made by selectively hydrolyzing polyacetylated material to deacetylate surface layer, oxidizing exposed free hydroxyl groups to form aldehydes, attaching polyamino acid |
| 10/24/2000 | US6136199 Using a chelating ion exchange resin saturated with lewis acid, i.e., copper, cations |
| 10/17/2000 | US6133392 Insoluble polymers which can swell only slightly with modified amino groups, processes for their preparation, and their use |
| 10/17/2000 | US6132750 Particles of cross-linked proteins and polysaccharides with hydroxamic groups for chelating metals and their uses notably in cosmetics |
| 09/26/2000 | CA2040809C Apparatus and process to regenerate a trivalent chromium bath |
| 09/21/2000 | WO2000054881A1 Improvements in and relating to complexants |
| 09/12/2000 | US6117330 Process of using sulfur and nitrogen-containing hydrocarbons in recovering and concentrating desired ions from solutions thereof |
| 09/08/2000 | WO2000052252A1 Fiber capable of forming metal chelate, process for producing the same, method of trapping metal ion with the fiber, and metal chelate fiber |
| 09/08/2000 | WO2000052004A1 Thiacrown polymers for removal of mercury from waste streams |
| 08/23/2000 | EP1028845A1 System for extracting soluble heavy metals from liquid solutions |
| 08/15/2000 | US6103121 Membrane absorbent for metal ion absorption with hydrolysis of polyacetylated cellulose, oxidation free hydroxyl groups to aldehydes and joining polyamino acid to cellulose |
| 08/15/2000 | US6103112 MIPC chromatographic apparatus with improved temperature control |
| 08/09/2000 | CN1262665A Process for removal of pentavalent arsenic from water |
| 07/20/2000 | WO2000042075A1 Malatyl polysaccharides, their production and their use |
| 07/20/2000 | WO2000041974A1 Composition and method for simultaneously precipitating metal ions from semiconductor wastewater and enhancing microfilter operation |
| 07/05/2000 | CN1054168C Multi-dentate ion exchange chelating fibre and its synthetic method |
| 06/15/2000 | WO2000034407A1 Powdery chelate-trapping material, process for producing the same, and method of trapping ion with the trapping material |
| 06/14/2000 | EP1007178A1 Bifunctional crown ether-based cation-exchange stationary phase for liquid chromatography |
| 06/08/2000 | WO2000033367A1 Wet cleaning apparatus |
| 06/06/2000 | US6071416 Poly N-cyclic aromatic ligands bonded to solid supports for removing and concentrating ions from solutions |