| 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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| 12/26/1991 | WO1991019675A1 Method and device for purifying water |
| 12/20/1991 | CA2019461A1 Method and device for purifying water |
| 12/18/1991 | EP0461822A2 Phosphoric acid-type chelate resin as uranyl ion adsorbent |
| 12/17/1991 | US5073575 Cadmium ion-chelating synthetic polymers and process thereof |
| 12/10/1991 | US5071819 Sulfur and nitrogen-containing hydrocarbons and process of using same in recovering and concentrating desired ions from solutions thereof |
| 11/12/1991 | US5063874 Producing a black matrix-type phosphor screen of a cathode ray tube |
| 11/06/1991 | EP0455403A1 Apparatus and process to regenerate a trivalent chromium bath |
| 10/28/1991 | WO1991017274A1 Metal extraction by ion exchange |
| 10/28/1991 | WO1991016972A1 Process for producing chelatising ion-exchange resins and their use in metal extraction |
| 10/28/1991 | CA2079596A1 Metal extraction by ion exchange |
| 10/28/1991 | CA2073061A1 Process for producing chelatising ion-exchange resins and their use in metal extraction |
| 10/17/1991 | DE4012099A1 Selective metal sepn. from aq. soln. using chelating resin - having imino-di:acetate gps. with pH control of both resin and soln. at below metal hydroxide pptn. value |
| 10/08/1991 | US5055286 Process for preparing high purity hydrogen peroxide |
| 10/02/1991 | EP0448831A2 Process for purifying waste water |
| 10/02/1991 | DE4010265A1 Purificn. of effluent water contg. complexed metal ions |
| 09/17/1991 | US5049280 2,3-dihydroxyterephthalamides as highly effective metal ion sequestering compounds |
| 09/03/1991 | US5045210 Synthetic Polymer Modified Polysaccharide, Ion Exchange Resins |
| 07/24/1991 | EP0437875A1 Metalchelating, hydrophilic polymer |
| 07/03/1991 | EP0435014A1 Removal of organic cations from polar fluids |
| 06/27/1991 | DE3941989A1 Cleaning acid waste water from glass industry contg. sulphuric acid - by passage through strongly basic anion exchanger and through chelate resin exchanger contg. active oxime Gps. |
| 06/12/1991 | EP0431370A1 Process for the production of ion exchange resins |
| 06/12/1991 | EP0431324A1 Pyridine-containing alkoxysilanes bonded to inorganic supports and processes of using the same for removing and concentrating desired ions from solutions |
| 06/12/1991 | CN1012812B Method for recovering gallium |
| 06/07/1991 | CA2031600A1 Removal of organic cations from polar fluids |
| 05/14/1991 | US5015448 Particulate material suitable for selectively separating metal cations from aqueous solutions, process for its production, and use thereof |
| 03/26/1991 | US5002645 Process of separating and recovering metal values from a waste stream |
| 03/20/1991 | EP0417870A2 Chelates for complexation of radioactive isotopes, their metal complexes and their use in diagnosis and therapy |
| 03/12/1991 | US4999171 Process for recovery of gallium by chelate resin |
| 03/12/1991 | CA2023595A1 Chelating agents for forming complexes with radioactive isotopes, metal complexes thereof and use thereof in diagnosis and therapy |
| 03/07/1991 | DE4021046A1 Removing radioactive caesium from solns. and suspensions etc. - by filtering, recycling retentate to batch containers, feeding permeate to ion exchange, and adding permeate to previous retentate |
| 02/27/1991 | EP0414408A2 Carbon slurry regeneration |
| 02/26/1991 | US4995984 Supported heteropolycyclic compounds in the separation and removal of late transition metals |
| 12/04/1990 | US4975379 Using crypt, crown compounds |
| 11/13/1990 | US4969995 Removal of metal ions from aqueous solution |
| 11/06/1990 | US4968433 Absorption with tr5initroarenol or trinitroarylsulfonic acid |
| 10/31/1990 | DE3913772A1 Particles for selective removal of metal complex anions from aq. soln. - has ion-pairing agent dispersed in aq. phase which is present in a gel or encapsulated |
| 10/30/1990 | US4966710 Method for removing magnesium and calcium from sodium sulfate solutions |
| 10/18/1990 | WO1990011825A1 Heavy metal removal filters |
| 09/25/1990 | US4959153 Chromatography; complexing transition metal ions, decomplexing using a stripping liquid and recovering |
| 08/28/1990 | US4952321 Process of removing and concentrating desired ions from solutions |
| 07/24/1990 | US4943375 Crown and crypt compounds bound to silica; chromatography; metal recovery; blood, photographic films and waste demetallization |
| 07/03/1990 | US4939000 Carbon slurry regeneration method |
| 06/27/1990 | EP0252912B1 Immobilised extractants |
| 05/22/1990 | CA1269491A1 Recovery of ammoniacal copper with organogels |
| 05/16/1990 | CN1007965B Composite porous matercal, process for production and separation of metallic |
| 05/15/1990 | US4925923 Lignin having chemically bound sulfur and phosphorus groups mainly as thiophosphate, using phosphorus pentasulfide |
| 04/25/1990 | EP0364824A1 Process of removing and concentrating desired ions from solutions thereof |
| 04/11/1990 | EP0362325A1 Chelating resins and process for using them in the extraction of metallic ions. |
| 04/04/1990 | EP0361060A1 Sulfur and nitrogen-containing hydrocarbon compounds and process using same in recovering and concentrating desired ions from solutions thereof |
| 03/28/1990 | CN1040826A Transition metal recovery |
| 03/20/1990 | US4909944 Removal of metal ions from aqueous solution |
| 03/13/1990 | US4908137 Heavy metal removal process |
| 03/08/1990 | DE3829654A1 Ion exchanger granules and use thereof for radio caesium decontamination of liquids |
| 03/07/1990 | EP0356803A2 Process for the preparation of an electrolyte for obtaining alkali metal bichromates and chromic acid |
| 02/28/1990 | EP0355837A2 Transition metal recovery |
| 02/28/1990 | EP0355376A2 Sulfur-containing hydrocarbon compounds and process of using same in recovering and concentrating desired ions from solutions thereof |
| 02/21/1990 | EP0355007A2 Process for the manufacture of ion exchange resins containing aminoalkylene phosphonic-acid groups |
| 01/23/1990 | US4895905 Gel-type chelating resins and a process for removal of multi-valent, alkaline earth or heavy metal cations from solutions |
| 12/05/1989 | CA1263641A1 Immobilised extractants |
| 10/31/1989 | US4877830 Chromatography of proteins |
| 10/24/1989 | US4876232 Phenanthroline on carbon or charcoal support |
| 10/11/1989 | EP0335971A1 Supported heteropolycyclic compounds in the separation and removal of late transition metals |
| 10/05/1989 | WO1989009238A1 Chelating resins and process for using them in the extraction of metallic ions |
| 10/03/1989 | US4871779 Ion exchange/chelation resins containing dense star polymers having ion exchange or chelate capabilities |
| 09/12/1989 | US4865823 Method for recovering gallium |
| 09/12/1989 | CA1259312A1 Silane reagents containing a complexion grouping and inorganic material modified with these reagents |
| 09/12/1989 | CA1259196A1 Method for eluting a metal adsorbed on an chelating agent |
| 09/11/1989 | EP0335971A4 Supported heteropolycyclic compounds in the separation and removal of late transition metals. |
| 08/30/1989 | EP0330187A2 Cation exchanger |
| 08/29/1989 | US4861564 Method of use of 1,3 disubstituted aromatic cyclohexane imides as chelating agents |
| 08/15/1989 | US4857638 Lignin having nitrogen and sulfur and process therefor employing thiourea |
| 08/15/1989 | US4857599 Modified dense star polymers |
| 05/30/1989 | US4835269 Silane reagents containing a complexon group |
| 05/18/1989 | DE3836138A1 Particulate medium suitable for the selective separation of metal cations from aqueous solutions, process for the production thereof and use thereof |
| 05/16/1989 | US4830837 Ion exchange |
| 05/03/1989 | EP0314026A1 Particle agent for the selective removal of metal cations from aqueous solutions, process for its production and its use |
| 04/20/1989 | WO1989003434A1 Supported heteropolycyclic compounds in the separation and removal of late transition metals |
| 03/30/1989 | DE3829265A1 Method of reducing the content of ionogenic heavy metals during the preparation of metal complex dyes |
| 03/28/1989 | US4816233 Ion exchange method for the recovery of scandium |
| 03/15/1989 | EP0306980A1 An ion exchange method for the recovery of scandium |
| 03/08/1989 | EP0306335A1 Analysis of ions present at low concentrations in solutions containing other ions |
| 03/08/1989 | EP0306334A2 Macrocyclic ligands bonded to silica or silica gel and their use in selectively and quantitatively removing and concentrating ions present at low concentrations from mixtures thereof with other ions |
| 02/28/1989 | US4808316 Process for treating waste water containing uranium and fluorine |
| 02/09/1989 | DE3725297A1 Process for removing heavy metals from sludge liquors, sludges and waters containing cyanides or modified isonitriles |
| 12/21/1988 | CN88100785A Gel-type chelating resins and process for removal of multi-valent, alkaline earth or heavy metal cations from solutions |
| 12/14/1988 | EP0294528A2 Proton ionizable macrocyclic compounds and selective competitive separation of desirable metal ions from mixtures thereof with other ions |
| 12/07/1988 | CN87103759A Synthesis of cross linked 2-ethyl pyridinyl polystyrene resin and its application |
| 11/29/1988 | US4787974 Blood purification |
| 11/22/1988 | US4786481 Method for eluting a metal adsorbed on a chelating agent |
| 10/05/1988 | EP0285055A2 Process for recovery of gallium by chelate resin |
| 09/27/1988 | US4774262 Crosslinked, binding, esterification recovering metals |
| 08/17/1988 | EP0278411A2 Gel-type chelating resins and a process for removal of multivalent, alkaline earth or heavy metal cations from solutions |
| 08/09/1988 | US4762556 Absorption on diallylamine homo or copolymer |
| 07/19/1988 | US4758635 Polyamindoamine based metal ion control compound |
| 07/19/1988 | US4758413 Reactive resins useful for precious metal recovery |
| 03/30/1988 | EP0261729A1 Method for preparing a ion exchanger, method for the removal and separation of copper from a solution, the separation of copper from a solution of metal ions |
| 03/24/1988 | DE3630935A1 Polymer resins containing amidoxime or hydroxamic acid groups |
| 03/22/1988 | US4732887 Resin in voids for chromatography |
| 03/22/1988 | US4732811 Agarose-polyaldehyde beads and their biological application affinity chromatography, hemoperfusion, cell separation, etc. |
| 03/02/1988 | EP0258146A1 Process for recovering the gallium contained in a sodium aluminate solution |