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| Number | Title | Issue Date |
| 8007672 | Method for demineralizing condensate The present invention provides a multiple bed-type condensate demineralization method and apparatus for the method that are able to provide an improved treated water quality in ammonia operation by substantially reducing the cross contamination ratio during resin re... | 08/30/2011 |
| 7727405 | Method for demineralizing condensate The present invention provides methods and equipments for demineralizing condensate, aiming at achieving high-purity effluent quality with a low concentration of sulfate ions derived from organic impurities leaching from cation resins in the condensate treatment by ... | 06/01/2010 |
| 7371326 | Water treatment/remediation system A treatment system passes feed water containing a contaminant such as perchlorate through a bed of strong base anion exchange resin that has been placed in a form (e.g., in sulfate form) to selectively capture the contaminant while passing other ions (e.g., nitrate)... | 05/13/2008 |
| 7285220 | Water softener Disclosed is a water softener capable of producing soft water at various temperatures and facilitating the regeneration of an ion exchange resin thereof. The water softener includes a water softening tank in which an internal region containing therein the ion exchan... | 10/23/2007 |
| 7273555 | Process for continuous ion exchange A process for continuous countercurrent ion exchange comprises piping a contaminated feed stream into a closed loop ion exchange contactor. The contactor is an ion exchange bed that has three or more reaction segments. The segments are comprised of at least an adsor... | 09/25/2007 |
| 7232520 | Ion exchange porous resins for solid phase extraction and chromatography Embodiments of the present invention are directed to porous resins for solid phase extractions. The resins feature at least one hydrophobic component, at least one hydrophilic component and at least one ion exchange functional group. The resins exhibit superior wett... | 06/19/2007 |
| 7217363 | Filtration system A filtration system for cleaning a fluid, typically water, that is contained in a tank having a rounded base and which cleans, during the backwash cycle, the filter media and, in particular, cleans the media in a usually stagnant area found in the rounded base of th... | 05/15/2007 |
| 7166460 | Product removal process for use in a biofermentation system This invention relates to a bioprocess engineering solution for a product removal process for use in a biofermentation. The invention discloses a process for withdrawing an aliquot of broth from a biofermentation vessel during at least a portion of the biofermentati... | 01/23/2007 |
| 7141173 | treatment process to remove metal contamination from groundwater The present invention provides a process for enhancing the metal contaminant sorption capacity of mineral compounds within a groundwater-bearing formation by manipulating the pH and the surface acidity of the mineral compounds. The process is useful in removing meta... | 11/28/2006 |
| 7094325 | EDI and related stacks and method and apparatus for preparing such Apparatus and method are disclosed for introducing ion exchange or other particulates into compartments of an already-assembled electrodeionization or comparable stack by modulating a flow of slurry into the compartments with slugs of gas such as air. The air propel... | 08/22/2006 |
| 7090774 | Method for packed column separations and purifications The invention encompasses a method of packing and unpacking a column chamber. A mixture of a fluid and a matrix material are introduced through a column chamber inlet so that the matrix material is packed within a column chamber to form a packed column. The column c... | 08/15/2006 |
| 7056577 | Body for providing ingrowth and growth of bone tissue and/or connective tissue and method of making such a body A body, such as a grain, for providing ingrowth and growth of bone tissue and/or connective tissue. The body consists of a plastic or non-essentially elastic biocompatible material, preferably metal or metal alloy. It is also porous, having the following porosity ch... | 06/06/2006 |
| 7052609 | Method for regeneration of adsorbent matrices The present invention relates to the regeneration of adsorbent matrices that are used for the purification of substances from aqueous liquid samples derived from biological material. The method is adapted to adsorbent matrices that are sensitive to hydrolysis either... | 05/30/2006 |
| 7048857 | Method and apparatus for metal removal ion exchange The present invention provides a method for selectively removing metal ions of interest from a solution (12), such as the wastewater from a chemical mechanical polishing process. The method comprises contacting a solution (12) containing solid particle... | 05/23/2006 |
| 7045057 | Preparation of homogeneously loaded ion exchangers A process for preparing an ion-exchangeable media within a moving-bed or simulated moving-bed device, which can create a true or simulated media flow, comprising the steps of packing the bed with ion-exchangeable media and passing a solution, containing a mixture of... | 05/16/2006 |
| 6972091 | Ion exchange resin plant An ion exchange resin plant for the demineralizing or softening water with an arrangement that allows the plant to operate continuously. The plant tank is divided into to two separate compartments that work simultaneously. One compartment effects water demineralizat... | 12/06/2005 |
| 6969466 | Purification of ammonia Highly pure aqueous solution of ammonia, typically electronics grade for use in semiconductor manufacturing is prepared by passing a solution of ammonia through at least one cation exchange resin bed to remove substantially all of the cation contaminants; subsequent... | 11/29/2005 |
| 6957743 | Microbiological water filter A method and device for the filtration and/or purification of fluids water or other solutions containing microbiological contaminants, such as fluids containing including bacteria and/or viruses, where the fluid water is passed through a purification material compos... | 10/25/2005 |
| 6911481 | Method of regenerating ion exchange resin A method of regenerating an ion exchange resin, comprising the steps of packing a used ion exchange resin in a regeneration tower; and repeating at least twice a step comprising passing an aqueous solution of regenerant through the regeneration tower downward from a... | 06/28/2005 |
| 6908560 | Zero brine, zero rinse water process for treatment of contaminated drinking water for removal of arsenic An ion exchange process for removing arsenic from drinking water is disclosed which uses a mixed ion regenerant and generates minimal levels of waste. ... | 06/21/2005 |
| 6852232 | Down flow radial flow filter A method of coacting a fluid with a media, such as granular particles. The media is moved to an upper portion in an upright media container, and held there during a treatment cycle in which the fluid is coacted with the media. When the media requires regeneration, t... | 02/08/2005 |
| 6852233 | Metal-collecting apparatus and method for elution and recovery of metal from metal-collecting material An object of the present invention is to provide a structure of a metal collecting material for use in seawater or river water or industrial wastewater to give the most excellent adsorption efficiency. Another object of the present invention is to provide a process ... | 02/08/2005 |
| 6696385 | Method of preserving sulfonic acid-type cation-exchange resin modified with thiol-containing amine compound The present invention aims at inhibiting a lowering in the modification ratio of a modified cation-exchange resin, in which part of the sulfonic acid groups have been modified with a thiol-containing amine compound and which is employed as a catalyst for ... | 02/24/2004 |
| 6613235 | Method of detecting sample ions by continuous electrochemical regeneration of a stationary phase An apparatus and method for electrochemically modifying the retention of a species on a chromatography material is disclosed. The apparatus comprises a housing having an effluent flow channel adapted to permit fluid flow therethrough. The effluent flow ch... | 09/02/2003 |
| 6508939 | Mixed bed type sugar solution refining system and regeneration method for such apparatus By passing an alkali regenerating agent A through a basic anion exchange resin (3), and through a strongly acidic cation exchange resin (4), the basic anion exchange resin can be regenerated while amphoteric organic materials such as the amino acids captu... | 01/21/2003 |
| 6383394 | Recycling process and apparatus The invention relates to a method for rendering waste sorbent material recyclable. The method includes collecting polymer-based sorbent materials containing one or more solvents, treating the waste material in a centrifugal treatment system for removing t... | 05/07/2002 |
| 6362240 | Mixed-bed type sugar solution refining system and regeneration method for such apparatus By passing an alkali regenerating agent A through a basic anion exchange resin (3), and through a strongly acidic cation exchange resin (4), the basic anion exchange resin can be regenerated while amphoteric organic materials such as the amino acids captu... | 03/26/2002 |
| 6203708 | Ion exchange resin An ion exchange resin comprising an ion exchange material dispersed or distributed throughout a polyurethane matrix. The ion exchange material is typically a second polymer which has been chemically modified after dispersion or distribution throughout the... | 03/20/2001 |
| 6200364 | Process for eluting precious metals from activated carbon A process is disclosed for the recovery of gold and/or silver values from activated carbon, wherein they are adsorbed as cyanide complexes. The process uses an eluant containing sugar. The process allows the eluant to pass through fresh carbon twice, ther... | 03/13/2001 |
| 6093327 | Apparatuses and methods for electrochemically modifying the retention of species on chromatography material An apparatus and method for electrochemically modifying the retention of a species on a chromatography material is disclosed. The apparatus comprises a housing having an effluent flow channel adapted to permit fluid flow therethrough. The effluent flow ch... | 07/25/2000 |
| 5944905 | Method and apparatus for performing a continuous reaction with at least one liquid phase and at least one solid catalyst in a pulsed column A method and an apparatus for performing a continuous reaction with at least one liquid reaction phase incorporating at least one starting compound in the presence of at least one solid-phase catalyst, wherein the phases to be contacted are circulated thr... | 08/31/1999 |
| 5858119 | Ion exchange resin cleaning method A method for cleaning ion exchange resins. The ion exchange resin is circulated by a circulating medium within a circulation, system. The concentration of ions within a circulation medium is periodically changed at a selected point in the circulation syst... | 01/12/1999 |
| 5772891 | Water treating method for treating waste water by using ion exchange resin A water treating apparatus is provided which can treat waste water for use as raw water in an ultrapure water producing system without addition of various kinds of chemicals. The apparatus includes a first water tank for receiving acid waste water, a seco... | 06/30/1998 |
| 5736052 | Ion exchange resin particle separation system An apparatus for continuously separating ion exchange resin particles with upwardly flowing carrier fluid. The apparatus includes a first vertically oriented separation vessel and a first collection vessel for receiving the first fraction of resin particl... | 04/07/1998 |
| 5698106 | Filtration process and apparatus It is possible to filter a suspension or emulsion in a filter bed of particulate filter medium by allowing the suspension to flow upwards through the filter bed simultaneously as the medium flows downwards through a filtering tank wherein filtration takes... | 12/16/1997 |
| 5451309 | Ion exchange resin regeneration apparatus An ion exchange resin regeneration apparatus. A nine compartment module has two end anode electrode compartments and a center cathode electrode compartment. These three compartments contain a mixture of cation and anion resin. The two end compartments are... | 09/19/1995 |
| 5397476 | Purification of solutions A method for the removal of pollutant ions from an aqueous solution in which they are contained, which method includes the steps of: i) contacting the solution to be treated with particles of a composite magnetic resin which includes magnetic particles embedde... | 03/14/1995 |
| 5391301 | Method of regenerating resin beads for use in water purification Water is purified to reduce pollution to less than 0.3%, by mixing re-generated and non re-generated anion and cation resins, followed by appropriate final mixing of both when re-generated, for further use.... | 02/21/1995 |
| 5277822 | Extraction of thermally stable contaminants from stack gas scrubbing amines A process for the removal of thermally-stable contaminants from stack gas scrubbing amines using a continuous countercurrent ion exchange column. Amines contaminated after use in stack gas scrubbing are fed into the column containing an anion exchanger re... | 01/11/1994 |
| 5269936 | Process for treating ion exchange resin The present invention provides a process for treating ion exchange resin which includes the steps of firstly introducing a liquor for treating the resin in substantially vertical upflow into a treatment zone in order to produce a fluidised bed comprising ... | 12/14/1993 |
