| 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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| 07/07/1993 | EP0550138A1 Monitoring and control system for selective regeneration of alkanolamine from cation ion exchange resin with sodium hydroxide |
| 07/07/1993 | EP0550048A1 Inorganic ion exchange material and detergent composition |
| 06/29/1993 | US5223022 Using chabazite |
| 06/24/1993 | WO1993012201A1 Process for removing mercury from organic media |
| 06/22/1993 | US5221478 Increasing speed and efficiency by using ion exchange resin prepared in multistage polymerization employing seed particles |
| 06/16/1993 | EP0546630A1 Process for removing mercury from organic media which also contain arsenic |
| 06/15/1993 | US5220058 Iodide removal process |
| 06/09/1993 | DE4140456A1 New cation exchanger prepd. from pitch - has controlled sulphonic and carboxylic acid gp. contents, used as catalyst or soil conditioner |
| 06/02/1993 | EP0544450A1 Supported Microspheres |
| 06/02/1993 | EP0544228A1 Process for recovery of agriculture valuable sewage sludge |
| 05/25/1993 | US5214013 Ion exchange media of bonded natural zeolite fines |
| 05/25/1993 | CA1318331C Ion exchangers modified with mercapto amines |
| 05/21/1993 | CA2083296A1 Composition of matter |
| 05/19/1993 | CN1072210A Process for producing lactic acid by incrystallization |
| 05/19/1993 | CN1072111A J111 homogeneous pore weak acid cation exchange resin and its technology |
| 05/18/1993 | CA1318078C Ion exchange resins loaded with quinolonecarboxylic acid derivatives, their preparation and use |
| 05/12/1993 | EP0333757B1 Process for the chromatographic separation of metal ions |
| 05/11/1993 | US5210294 Process for the production of purified lactic acid aqueous solutions starting from fermentation broths |
| 05/05/1993 | CN1071662A Process for removing iodide compounds from carboxylic acids and carboxylic acid anhydrides |
| 05/04/1993 | US5208006 Large-pored molecular sieves containing at least one octahedral site comprising titanium and at least silicon as a tetrahedral site |
| 04/27/1993 | US5206195 Soaking in buffered acid solution for prolonged time; exhibits no alkalinity in water dispersion |
| 04/27/1993 | US5205929 Particles having controlled size and porosity for chromatographic immobilization and separation of proteins, enzymes, antibodies |
| 04/21/1993 | EP0538040A2 Process for removing iodide compounds from carboxylic acids and carboxylic acid anhydrides |
| 04/21/1993 | EP0537586A1 Complexes of boric acid as stationary phase in liquid chromatography |
| 04/19/1993 | CA2080744A1 Process for removing iodide compounds from carboxylic acids and carboxylic acid anhydrides |
| 04/15/1993 | WO1993006923A1 Aminoalkylphosphonic acid containing ligands attached to solid supports for removal of metal ions |
| 04/14/1993 | EP0164402B1 Recovery of organic acids, catalysts and water from terephthalic acid manufacture |
| 04/07/1993 | EP0535605A2 Iodide removal process |
| 03/31/1993 | EP0531364A4 Large-pored molecular sieves containing at least one octahedral site and tetrahedral sites of at least one type |
| 03/30/1993 | CA1315298C Process for the mutual condensation of aromatic and carbonylic compounds |
| 03/24/1993 | EP0532919A1 Method for removing a heavy metal from a waste stream |
| 03/23/1993 | US5196527 Chromatographic fillers |
| 03/17/1993 | EP0531364A1 Large-pored molecular sieves containing at least one octahedral site and tetrahedral sites of at least one type |
| 03/11/1993 | DE4229866A1 Ion exchange resins, useful esp. for sepn. of bio-polymers - have insol., crosslinked , hydroxyl-contg. base polymer and poly:ol-glycidyl adduct as spacer, with ion exchange gps. on the spacer |
| 03/11/1993 | DE4129698A1 Unfixed dyestuff removal from printed or dyed goods with circulating liquor - freed from dyestuff in column contg. binder, which is regenerated and reused |
| 03/10/1993 | EP0530258A1 Adsorbent medium. |
| 03/09/1993 | US5192446 Cation exchange resins having an enhanced capacity for iron oxides |
| 03/04/1993 | WO1993003841A1 Ion exchanger, production thereof, and process for separating biopolymer by using same |
| 03/02/1993 | US5190659 Contamination removal system employing filtration and plural ultraviolet and chemical treatment steps and treatment mode controller |
| 02/24/1993 | EP0528012A1 Vegetable support for the adsorption of contaminants in an aqueous medium |
| 02/23/1993 | US5188737 Method of removing nitrate ion from a solution containing nitrate and other anions |
| 02/04/1993 | DE4119869C1 Removal of ammonia and ammonium from drinking or waste water etc. - using zeolite rings of specified dimensions as filler etc. in reactor or column |
| 02/02/1993 | US5183650 Mixing metal hydroxide or a metal salt, a metal aluminate, colloidal silica in a aqueous solution containg water soluble polymer, stirring to form a cake, allowing cake to mature followed by heating |
| 01/27/1993 | EP0524663A1 High stability porous zirconium oxide spherules and support comprising same |
| 01/26/1993 | US5182251 Aminoalkylphosphonic acid containing ligands attached to solid supports for removal of metal ions |
| 01/26/1993 | US5182025 Method of neutralizing polyol catalysts and products |
| 01/21/1993 | DE4123651A1 Selective removal of nitrate ions from water or aq. solns. - by ion exchange using succession of columns with weakly acidic cation exchanger then weakly basic anion exchanger before entering column filled with buffer |
| 01/19/1993 | CA1312993C Ionic exchangers modified with thiazolines |
| 01/13/1993 | EP0522856A1 Purification of solutions |
| 01/13/1993 | EP0522642A1 Method of preparing metal element adsorbent and method of adsorbing and separating metal element using the same |
| 12/29/1992 | US5175193 Hydrolysis of crosslinked acrylonitrile bead polymer with alkaline hydrolyzing agent |
| 12/29/1992 | US5174902 Ion exchanging, adsorption and decomposition of impurities for purification |
| 12/22/1992 | US5173275 Flowing through a column packed with particles of an ethylene /(meth)acrylic acid/(meth)acrylate/alkylpolyglycol(meth) acrylate polymer; sea water and industrial wastes |
| 12/10/1992 | DE4214075A1 Aq. hydrogen peroxide soln. purificn. with min. decomposition |
| 12/09/1992 | EP0517242A2 Process for the production of purified lactic acid aqueous solutions starting from fermentation broths |
| 12/07/1992 | CA2070558A1 Process for the production of purified lactic acid aqueous solutions starting from fermentation broths |
| 12/02/1992 | EP0515646A1 Anion exchanger. |
| 12/01/1992 | US5167939 Process for removing calcium and magnesium ions from an aqueous alkali chloride solution for use in membrane electrolysis |
| 12/01/1992 | US5167827 Reverse phase, without disturbing peaks or peak deformations in chromatogram |
| 11/24/1992 | US5166064 Fat and oil modifier; drying in reduced pressure |
| 11/19/1992 | DE4116128A1 Purificn. of water supply for domestic consumption - by treatment with mixt. of nitrate-selective anion exchanger and weak acid cation exchanger to give germ-free, low nitrate, partially desalted water |
| 11/17/1992 | US5164080 Ion-exchange treatment apparatus for dispersions |
| 11/11/1992 | EP0512175A1 Process for removing residual monomers and oligomers from amine-containing polymers |
| 11/10/1992 | US5162276 Preparation of modifying and using aluminosilicates |
| 10/21/1992 | EP0509164A1 Micro-particulate aluminosilicate and process for producing the same |
| 10/21/1992 | CN1065466A Method for preparing uniform size ion-exchange resin particles |
| 10/21/1992 | CN1065464A Process for removing residual monomers and oligomers from amine-containing polymers |
| 10/20/1992 | US5157055 Cation exchange polyimide resin and use thereof |
| 10/20/1992 | US5156824 Application of diphosphonic derivatives to cation exchange, new diphosphonic derivatives and production process therefor |
| 10/13/1992 | US5154833 Removal of mercury from waste streams |
| 10/07/1992 | EP0507490A2 Method for preparing uniform size ion-exchange resin particles |
| 10/06/1992 | US5152986 Preparation and use of ion exchange resins loaded with quinolonecarboxylic acid derivatives |
| 10/06/1992 | CA2048483A1 Process for removing residual monomers and oligomers from amine-containing polymers |
| 10/03/1992 | CA2064645A1 Method for preparing uniform size ion-exchange resin particles |
| 09/29/1992 | US5151259 Modified crystalline aluminosilicate and method of preparing the same |
| 09/22/1992 | US5149436 Continuous displacement chromatographic method |
| 09/15/1992 | US5147525 Catalyst |
| 09/09/1992 | EP0502629A1 Process of removing from water suspended metal corrosion products insoluble or sparingly soluble in water |
| 09/09/1992 | EP0502619A1 Oxidation-resistant cation-exchange resins |
| 09/08/1992 | WO1992015397A1 Vegetable support for the adsorption of contaminants in an aqueous medium |
| 09/08/1992 | CA2082404A1 Vegetable support for the adsorption of contaminants in an aqueous medium |
| 09/08/1992 | CA2062481A1 Oxidation-resistant cation-exchange resins |
| 08/25/1992 | US5141634 High stability porous zirconium oxide spherules |
| 08/21/1992 | CA2061250A1 Process of removing suspended metal corrosion products insoluble or sparingly soluble in water and condensate treating equipment |
| 08/20/1992 | DE4201362A1 Treating abattoir waste water to reduce COD - by adding sodium bentonite, polyvalent metal flocculating agent and flocculation auxiliary, e.g. acrylamide-acrylate] copolymer |
| 08/18/1992 | US5139981 Process for preparing silver(I)-exchanged resins |
| 08/12/1992 | EP0263159B1 Composite membrane |
| 08/11/1992 | US5137706 Crystalline compositions |
| 08/11/1992 | CA1306237C Process for regenerating a carbonylation catalyst solution to remove corrosion metals |
| 07/29/1992 | EP0496513A2 Process for producing ionexchange resins and use of the resins for separating amino acids |
| 07/29/1992 | EP0496405A1 Porous resin and process for its production |
| 07/28/1992 | US5133846 Silver recovery device |
| 07/15/1992 | CN1062721A Process for regenerating carbonylation catalyst solution to remove corrosion metals |
| 07/14/1992 | CA1305181C Removal of halides from carboxylic acids |
| 07/09/1992 | WO1992011088A1 Anion exchanger |
| 07/08/1992 | EP0461244A4 Cesium-specific phenolic ion exchange resin |
| 07/08/1992 | CN1017314B Process for regenerating carbonylation catalyst solution to remove corrosion metals |
| 07/07/1992 | US5128378 Polyetherthioethersulfone |
| 06/25/1992 | WO1992010292A1 The removal of heavy metals, especially lead, from aqueous systems containing competing ions utilizing amorphous tin and titanium silicates |
| 06/24/1992 | EP0491520A1 Kandite clay compositions |