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| Number | Title | Issue Date |
| 7402283 | Electrolytic eluent generator and method of use An acid or base is generated in an aqueous solution by the steps of: (a) providing a source of first ions adjacent an aqueous liquid in a first acid or base generation zone, separated by a first barrier (e.g., anion exchange membra... | 07/22/2008 |
| 7364646 | High-purity eluant generator 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 channel compr... | 04/29/2008 |
| 7288176 | Method and apparatus for generating high purity eluant A method and apparatus is provided for generating a high purity eluant suitable for use in chromatography. The high purity eluant may be generated by providing water and a first stationary phase comprising exchangeable cations. Electrolysis ions are generated by the... | 10/30/2007 |
| 7153476 | Large capacity acid or base generator apparatus Method and apparatus for generating an acid or base, e.g. for chromatographic analysis of anions. For generating a base the method includes the steps of providing a cation source in a cation source reservoir, flowing an aqueous liquid stream through a base generatio... | 12/26/2006 |
| 6955922 | Large capacity acid or base generator and method of use Method and apparatus for generating an acid or base, e.g. for chromatographic analysis of anions. For generating a base the method includes the steps of providing a cation source in a cation source reservoir, flowing an aqueous liquid stream through a base generatio... | 10/18/2005 |
| 6682701 | Large capacity acid or base generator apparatus Method and apparatus for generating an acid or base, e.g. for chromatographic analysis of anions. For generating a base the method includes the steps of providing a cation source in a cation source reservoir, flowing an aqueous liquid stream through a bas... | 01/27/2004 |
| 6610186 | Method and device for separating particles or molecules by migration through a ferrofluid The invention concerns a method for separating particles or molecules whereby these particles or molecules are introduced in a separating medium and a moving force is applied to them in said medium. The method is characterised in that the separating mediu... | 08/26/2003 |
| 6495015 | Electrokinetically pumped high pressure sprays An electrokinetic pump capable of producing high pressure is combined with a nozzle having a submicron orifice to provide a high pressure spray device. Because of its small size, the device can be contained within medical devices such as an endoscope for ... | 12/17/2002 |
| 6485624 | Method and device for capacitative demineralization of liquids which contain ions The invention relates to a process and apparatus for the capacitive demineralization of liquids containing ions in which, after introducing the liquid into a container, an electric field is applied to capacitor plates (8, 9), which leads to ions of the li... | 11/26/2002 |
| 6423199 | Electrochemical ion exchange using carbollide systems An electrochemical ion exchange cell comprises a metal carbollide as ion exchange material. The carbollide is preferably a polynuclear cobalt dicarbollide and is typically substituted by chlorine. Also novel are polynuclear metal carbollides comprising a ... | 07/23/2002 |
| 6395143 | Biosorption system The invention relates to a system, process and apparatus for separating biosorbent and sorbate. Biomass enclosed within a membrane system is coupled to an electrode, which is capable of being placed in contact with the sorbate containing material in the p... | 05/28/2002 |
| 6387243 | Separation of metal ions absorbed on a resin and installation for recycling photographic effluents including an exchanger and an electrolytic vessel A method for separating metal ions absorbed on a resin includes: suspending or percolating a cationic exchange resin charged with a polar solvent containing an eluting agent or a mixture of eluting agents containing at least an organic or mineral ligand c... | 05/14/2002 |
| 6316270 | Acid base or generator A method for generating high purity acid or base in an aqueous stream for use as an eluent for chromatography and, particularly, ion chromatography. For generating a base for anion chromatography, the aqueous stream is directed through a cation exchange b... | 11/13/2001 |
| 6290909 | Sample injector for high pressure liquid chromatography Apparatus and method for driving a sample, having a well-defined volume, under pressure into a chromatography column. A conventional high pressure sampling valve is replaced by a sample injector composed of a pair of injector components connected in serie... | 09/18/2001 |
| 6284124 | Electrodeionization apparatus and method Electrodeionization apparatus and method. The electrodeionization apparatus includes an ion-depleting compartment in which alternating layers of an electroactive media are positioned. One of the alternating layers is doped to provide a more balanced curre... | 09/04/2001 |
| 6277257 | Electrokinetic high pressure hydraulic system An electrokinetic high pressure hydraulic pump for manipulating fluids in capillary-based systems. The pump uses electro-osmotic flow to provide a high pressure hydraulic system, having no moving mechanical parts, for pumping and/or compressing fluids, fo... | 08/21/2001 |
| 6265224 | Sample processing method using ion exchange resin The present invention relates to methods in which ion exchange resins are used to reduce the amount of substances which interfere with nucleic acid hybridization in samples. The methods also stabilize the samples. Kits containing the ion exchange resins r... | 07/24/2001 |
| 6225129 | Large capacity acid or base generation apparatus and method of use Method and apparatus for generating an acid or base, e.g. for chromatographic analysis of anions. For generating a base the method includes the steps of providing a cation source in a cation source reservoir, flowing an aqueous liquid stream through a bas... | 05/01/2001 |
| 6224728 | Valve for fluid control A valve for controlling fluid flows. This valve, which includes both an actuation device and a valve body provides: the ability to incorporate both the actuation device and valve into a unitary structure that can be placed onto a microchip, the ability to... | 05/01/2001 |
| 6214204 | Ion-removal from water using activated carbon electrodes An electrode for deionization of water is made of a continuous activated carbon structure. The activated carbon is derived from a synthetic carbon precursor. The structure has openings, inlet and outlet ends such that water entering the inlet end passes t... | 04/10/2001 |
| 6074537 | Equipment for electochemical collection removal of ions A method and apparatus concentrates, collects and removes heavy metals, other cations, and anions from media permitting generation of electrical fields. The heavy metals and other cations are electrochemically concentrated and precipitated for rapid remov... | 06/13/2000 |
| 6036921 | Acid or base generator with chromatograph An apparatus for generating high purity acid or base in an aqueous stream for use as an eluent for chromatography and, particularly, ion chromatography. For generating a base for anion chromatography, the aqueous stream is directed through a cation exchan... | 03/14/2000 |
| 6019882 | Electrokinetic high pressure hydraulic system A compact high pressure hydraulic pump having no moving mechanical parts for converting electric potential to hydraulic force. The electrokinetic pump, which can generate hydraulic pressures greater than 2500 psi, can be employed to compress a fluid, eith... | 02/01/2000 |
| 6013164 | Electokinetic high pressure hydraulic system A compact high pressure hydraulic system having no moving parts for converting electric potential to hydraulic force and for manipulating fluids. Electro-osmotic flow is used to provide a valve and means to compress a fluid or gas in a capillary-based sys... | 01/11/2000 |
| 5980718 | Means for limiting and ameliorating electrode shorting A fuse and filter arrangement for limiting and ameliorating electrode shorting in capacitive deionization water purification systems utilizing carbon aerogel, for example. This arrangement limits and ameliorates the effects of conducting particles or debo... | 11/09/1999 |
| 5958213 | Water treatment method and apparatus for water containing oil droplets A water treating apparatus for treating water, includes: an oil drop separator for separating oil drops from water to be treated which has an electrode in which an anode is made of amphoteric metal, a power source for supplying an electric power to the el... | 09/28/1999 |
| 5954936 | Robust technetium removal method and system The invention provides a method and processing system for removing both anionic and cationic technetium complexes from an aqueous solution by adjusting the pH of the solution to greater than approximately 2, and directing the solution into an integrated r... | 09/21/1999 |
| 5944972 | Method for producing deionized water A method for producing deionized water by self-regenerating type electrodialysis deionization, which comprises (i) using a deionized water-producing apparatus containing an electrodialyzer comprising cation exchange membranes and anion exchange membranes ... | 08/31/1999 |
| 5914025 | Ion chromatographic method and apparatus using ion reflux A method and apparatus for generating an acid or base eluent in an aqueous stream solely from an ion exchange bed for liquid chromatography of anions or cations and for simultaneously suppressing conductivity of the eluent in the ion exchange bed after ch... | 06/22/1999 |
| 5858191 | Electrodeionization apparatus and method An improved electrodeionization apparatus and method are provided. The electrodeionization apparatus includes an ion-concentrating compartment, an ion-depleting compartment, and electrolyte compartments, wherein alternating layers of anion exchange resins... | 01/12/1999 |
| 5788828 | Apparatus for detecting anions in water An improved apparatus for detecting anions in water includes an electrical continuous ion-exchange unit comprising an anode compartment and a cathode compartment which are spaced apart by an alkali removing compartment packed with a cation exchanger defin... | 08/04/1998 |
| 5779891 | Non-fouling flow through capacitor system A foul-resistant, flow-through capacitor, a system employing the capacitor and a method of separation is disclosed wherein the capacitor has at least one anode and cathode electrode pair. The electrodes are formed of high surface area, electrically conduc... | 07/14/1998 |
| 5762774 | Apparatus for the purification of liquids and a method of manufacturing and of operating same A method of manufacturing an apparatus for the electrodeionization of a fluid includes determining the flow rate of the fluid to be deionized, its initial concentration of ionic impurities, a desired post-processing concentration of ionic impurities and a... | 06/09/1998 |
| 5748437 | Fluid separation system with flow-through capacitor A flow-through capacitor and a controlled charge chromatography column system using the capacitor for the purification of a fluid-containing material, which column comprises an inlet for a fluid to be purified and an outlet for the discharge of the purifi... | 05/05/1998 |
| 5738775 | Electrically regenerable desalting apparatus Electrically regenerable desalting apparatus having the desalting compartment packed with ion exchangers produced by utilizing radiation-initiated graft polymerization, in which said ion exchangers are nonwoven fabrics in the form of a fiber assembly and ... | 04/14/1998 |
| 5647965 | Apparatus and method for separating a charged substance from a conductive fluid Apparatus and method for removing a charged substance from a conductive fluid by imposing an electrostatic field on the conductive fluid, the charged substance being drawn to and retained by a charged substance receiving member having a core of a conducti... | 07/15/1997 |
| 5620597 | Non-fouling flow-through capacitor A foul-resistant, flow-through capacitor, a system employing the capacitor and a method of separation is disclosed wherein the capacitor has at least one anode and cathode electrode pair. The electrodes are formed of high surface area, electrically conduc... | 04/15/1997 |
| 5611904 | Electrochromatography apparatus The invention provides fittings for the ends of electrochromatography cols. Each fitting includes an annular electrode surrounding one end of the passage electrical fields to be applied. The fitting also contains a passageway for eluant flowing into or o... | 03/18/1997 |
| 5584981 | Electrochemical deionization An electrochemical cell (50) for deionizsation utilizes electrochemical ion-exchange to remove ions from a feed solution. Under the influence of an electric field, ions are adsorbed into, are scored within and pass through a permeable layer (54, 64) of pa... | 12/17/1996 |
| 5489370 | Removal of ions from a bulk source by electropotential ion transport using a host receptor matrix Remediation of soil and groundwater using electropotential gradient induced migration of a target ion and immobilization and/or confinement of the target ion by a host receptor matrix (HRM). In addition to immobilizing and/or confining the target ion, the... | 02/06/1996 |
