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| Number | Title | Issue Date |
| 7407585 | Water purification system and methods, and module for the system The invention relates to a method and a system for purifying water whereby: the water to be purified is pressurized (13); a pressurized flow of said water is directed onto at least one selective permeability... | 08/05/2008 |
| 7066900 | Removal of metabolic components from blood An electrophoresis system for removing or reducing concentration of a metabolic component from blood or plasma of a subject is provided. A method for removing or reducing concentration or amount of a metabolic component in blood or plasma of a subject is also provid... | 06/27/2006 |
| 6911153 | Method and apparatus for treating fluid mixtures with ultrasonic energy A method and apparatus for treating mixtures with ultrasonic energy. In one embodiment, the mixture can include a selected constituent and the method can include directing a continuous flow of the mixture into a treatment apparatus and altering a phase and/or a chem... | 06/28/2005 |
| 6824740 | Apparatus for active biological sample preparation Systems and methods for the electronic sample preparation of biological materials utilize the differential charge-to-mass ratio and/or the differential affinity of sample constituents to separation materials for sample preparation. An integrated system is provided f... | 11/30/2004 |
| 6824662 | Electrodeionization apparatus and method An electrodeionization apparatus and method for purifying a fluid. A fluid, such as water, can be purified by removing weakly ionizable species from the fluid. Weakly ionizable species may be dissociated at different pH levels to facilitate removal from the fluid in... | 11/30/2004 |
| 6649037 | Electrodeionization apparatus and method An electrodeionization apparatus and method for purifying a fluid. A fluid, such as water, can be purified by removing weakly ionizable species from the fluid. Weakly ionizable species may be dissociated at different pH levels to facilitate removal from t... | 11/18/2003 |
| 6610546 | Continuous electrolytically regenerated packed suppressor for ion chromatography An electrolytic suppressor including (a) packing (a suppressor bed of ion exchange resin or a flow-through monolith), (b) an electrode chamber adjacent the suppressor, (c) a first electrode in the electrode chamber, (d) a barrier separating the packing fr... | 08/26/2003 |
| 6537436 | System for electrodialysis treatment of liquids An electrodialysis treatment system utilizing a plurality of disparate layers of an electrodialysis cell stack for separation of components in liquid mixtures. The system for electrodialysis treatment for purification and deionizing liquids includes provi... | 03/25/2003 |
| 6514398 | 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... | 02/04/2003 |
| 6508985 | Continuous electrolytically regenerated packed bed suppressor for ion chromatography An electrolyitic suppressor including (a) a suppressor bed of ion exchange resin, (b) an electrode chamber adjacent the suppressor, (c) a first electrode in the electrode chamber, (d) a barrier separating the suppressor bed from the first electrode chambe... | 01/21/2003 |
| 6495371 | Continuous electrolytically regenerated packed bed suppressor for ion chromatography For anion analysis, the method includes: (a) flowing an aqueous liquid sample stream containing anions to be detected and cation hydroxide through a separator bed, (b) flowing the aqueous effluent from the separator bed through a flow-through suppressor, ... | 12/17/2002 |
| 6444107 | Method and device for the simultaneous production of acid and base of high purity An electrodialytic method and device for the simultaneous production of acids and bases of high purity and higher concentration operates by splitting corresponding salts in aqueous solution using an electrolysis cell. The electrolysis cell includes a cath... | 09/03/2002 |
| 6428666 | Electrokinetic concentration of charged molecules A method for separating and concentrating charged species from uncharged or neutral species regardless of size differential. The method uses reversible electric field induced retention of charged species, that can include molecules and molecular aggregate... | 08/06/2002 |
| 6325976 | Continuous electrolytically regenerated packed bed suppressor for ion chromatography An electrolyitic suppressor including (a) a suppressor bed of ion exchange resin, (b) an electrode chamber adjacent the suppressor, (c) a first electrode in the electrode chamber, (d) a barrier separating the suppressor bed from the first electrode chambe... | 12/04/2001 |
| 6187197 | Multi-stage engine coolant recycling process A multi-stage apparatus and a process for recycling used engine coolant employs a combination of filtration, dissolved air floatation, centrifugation (hydrocyclone separation), semi-permeable nano filtration, reverse osmosis, and continuous deionization f... | 02/13/2001 |
| 6077434 | Current-efficient suppressors and method of use A method and apparatus for increasing the current efficiency of suppressor and suppress-like pretreatment devices is disclosed for the purpose of suppressing a high concentration of eluent without the detrimental effects of excess heat generation. The met... | 06/20/2000 |
| 6054053 | Methods of improving peak resolution in reversed-phase electrochromatography Peak resolution in reversed-phase electrochromatography is improved in either of two alternative ways. The first is by a stepwise increase in the concentration of acetonitrile or other equivalent buffer constituent or modifier after the sample has been lo... | 04/25/2000 |
| 6017433 | Desalting aqueous streams via filled cell electrodialysis The invention is a process for desalting aqueous solutions, which are initially acidified to a pH of about 3 or less. Then, the acidified solution is fed into a desalting compartment of an electrodeionization cell which contains a suitable ion exchange ma... | 01/25/2000 |
| 5980716 | Water treatment apparatus for a fuel cell system Low conductivity cooling water for a fuel cell body is obtained by a water treatment apparatus which removes dissolved carbon dioxide gas in the exhaust gas condensate by a decarbonation column. Iron oxide is eliminated from the condensate as well as blow... | 11/09/1999 |
| 5938930 | Methods of improving peak resolution in reversed-phase electrochromatography Peak resolution in reversed-phase electrochromatography is improved in either of two alternative ways. The first is by a stepwise increase in the concentration of acetonitrile or other equivalent buffer constituent or modifier after the sample has been lo... | 08/17/1999 |
| 5830340 | Method for making a composite filter A method for forming filtration members using an electric potential to control the migration of electrically charged particles and hence to control the formation of a membrane layer on a substrate. In one embodiment, electrophoresis and electrodialysis pr... | 11/03/1998 |
| 5746920 | Process for purifying dairy wastewater A process and apparatus for purifying lactose-containing wastewater. The process comprises first treating the wastewater with base. The treated wastewater is then introduced into a fermenter where the lactose present in the wastewater is fermented to form... | 05/05/1998 |
| 5569365 | Intermittent electrolytic membrane suppressor regeneration for ion chromatography A method and apparatus using suppression of eluents for the analysis of anions or cations in ion chromatography. The invention relates to the intermittent use of the electric field during electrochemical suppression to minimize background noise during det... | 10/29/1996 |
| 5538636 | Process for chemically oxidizing highly concentrated waste waters A process to purify waste waters using chemical oxidation and Fenton's reagent by the action in the acid range of hydrogen peroxide and iron(II) compounds and subsequent precipitation in the weakly acid to alkaline range of the iron(III) compounds, said p... | 07/23/1996 |
| 5518622 | Electrochemical pretreatment system for liquid sample analysis A system for pretreating sample streams including a concentrated matrix compound to neutralize the compound. The system includes an electrochemical membrane device in which sample flows through a sample flow channel of the device separated from a matrix i... | 05/21/1996 |
| 5453382 | Electrochromatographic preconcentration method Solutions of analytes in concentrations too low for certain analytical techniques such as various capillary electrophoresis techniques are concentrated in a solid-phase adsorption medium by a technique which involves a pressure-gradient-driven adsorption ... | 09/26/1995 |
| 5427664 | Free solution electrophoresis-membrane filters trapping assay apparatus and method A free solution electrophones-membrane filter trapping assay apparatus includes a container and at least one porous membrane. The porous membrane and container define a chamber capable of holding run solution. A specimen containing particles to be classif... | 06/27/1995 |
| 5362371 | Apparatus and method for removing liquid from liquid bearing material An apparatus and method for removing liquid from liquid bearing material are provided, the apparatus comprising a crossflow filter apparatus for continuously removing liquid from a liquid bearing material comprising a housings, a filter disposed within th... | 11/08/1994 |
| 5344533 | Apparatus and method for removing liquid from liquid bearing material An apparatus and method for removing liquid from liquid bearing material are provided, the apparatus comprising a pair of electrode units having portions thereof disposed adjacent each other and defining an inlet to the adjacent portions and an outlet fro... | 09/06/1994 |
| 5259940 | Apparatus and method for removing liquid from liquid bearing material An apparatus and method for removing liquid from liquid bearing material are provided, the apparatus comprising a pair of electrode units having portions thereof disposed adjacent each other and defining an inlet to the adjacent portions and an outlet fro... | 11/09/1993 |
| 5230809 | Method and apparatus for dewatering sludge materials A method and apparatus for the removal of water, liquids and liquors from sludges and slurries, the sludges and slurries mixed with an electrolyte to improve conductivity and introduced into a conveyor chamber where an electrical path is established to pe... | 07/27/1993 |
| 5192418 | Metal recovery method and system for electroplating wastes The present invention relates to a method of completely recovering nickel and zinc metal from multiple plating process waste streams by first separating the waste streams into a clean, relatively constant flow and/or concentration fraction and a dirty, va... | 03/09/1993 |
| 5160593 | Apparatus and method for removing liquid from liquid bearing material An apparatus and method for removing liquid from liquid bearing material are provided, the apparatus comprising a pair of electrode units having portions thereof disposed adjacent each other and defining an inlet to the adjacent portions and an outlet fro... | 11/03/1992 |
| 5114553 | Apparatus and method for removing liquid from liquid bearing material An apparatus and method for removing liquid from liquid bearing material are provided, the apparatus comprising a pair of electrodes having portions thereof disposed adjacent each other and defining an inlet to the adjacent portions and an outlet from the... | 05/19/1992 |
| 5114560 | Apparatus and method for removal of liquids A first electrode arrangement and a transport element are movable relative to a support. A working space is disposed between the movable elements for advancing moist material along a processing path. As the moist material advances, electrical current is p... | 05/19/1992 |
| 5071530 | Method of manufacturing lactulose For the manufacture of lactulose, an alkaline aqueous solution of lactose and borax is prepared and heated at a temperature above 80° C. The lactulose is separated from the resulting conversion products. Apart from the borax, no alkalizing material is ad... | 12/10/1991 |
| 5021136 | Apparatus and method for removing liquid from liquid bearing material An apparatus and method for removing liquid from liquid bearing material are provided, the apparatus comprising a pair of movable electrodes having portions thereof disposed adjacent each other and defining an inlet to the adjacent portions and an outlet ... | 06/04/1991 |
| 4877503 | Apparatus and method for removing liquid from liquid bearing material An apparatus and method for removing liquid from liquid bearing material are provided, the apparatus comprising a pair of spaced apart electrodes for being disposed on opposite sides of the material, a unit for creating an electrostatic field between the ... | 10/31/1989 |
| 4874700 | Process for the production of L-malic acid L-malic acid is separated by means of electrodialysis from reaction mixtures derived from biotechnical conversion of fumarate into L-malate. Fumaric acid present in the acid concentrate from the dialysis is separated from L-malic acid without precipitatio... | 10/17/1989 |
| 4780188 | Apparatus and method for removing liquid from liquid bearing material An apparatus and method for removing liquid from liquid bearing material is provided, the apparatus comprising a pair of spaced apart electroes for being disposed on opposite sides of the material, a unit for creating an electrostatic field between the el... | 10/25/1988 |
