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| Number | Title | Issue Date |
| 7658833 | Method for copper electrowinning in hydrochloric solution A method for the production of metallic copper in a substantially dendrite-free crystalline form is described, comprising an electrowinning from a cuprous and/or cupric chloride solution carried out in a spouted bed cell comprising a cathode consisting of a descendi... | 02/09/2010 |
| 7494579 | Spouted bed electrode cell for metal electrowinning It is herein described an electrowinning cell with a spouted bed electrode of growing metallic beads, separated by a semi-permeable diaphragm and suitable for being assembled in a stack in a modular arrangement. ... | 02/24/2009 |
| 7347920 | Production, refining and recycling of lightweight and reactive metals in ionic liquids Lightweight and reactive metals can be produced from ore, refined from alloy, and recycled from metal matrix composites using electrolysis in electrolytes including an ionic liquid containing a metal chloride at or near room temperature. Low electric energy consumpt... | 03/25/2008 |
| 7273537 | Method of production of metal particles through electrolysis A method of producing metal particles through electrolysis. A cathode having a plurality of active zones on a surface thereof is at least partially immersed in a reaction solution. The cathode is spaced from an anode also at least partially immersed in the reaction ... | 09/25/2007 |
| 7255798 | Recycling of used perfluorosulfonic acid membranes A method for recovering and recycling catalyst coated fuel cell membranes includes dissolving the used membranes in water and solvent, heating the dissolved membranes under pressure and separating the components. Active membranes are produced from the recycled mater... | 08/14/2007 |
| 7166203 | Controlled concentration electrolysis system A system for maintaining a concentration range of an electroreducible metal species undergoing electrolysis within a predetermined concentration range comprises a first container containing a body of an electrolyte solution in which a metal is partially dissolved, a... | 01/23/2007 |
| 7090752 | Fluorine separation and generation device A process and apparatus for the electrolytic separation of fluorine from a mixture of gases is disclosed. Also described is the process and apparatus for the generation of fluorine from fluorine/fluoride containing solids, liquids or gases. ... | 08/15/2006 |
| 6930586 | Carbon monoxide detector A carbon monoxide (CO) detection unit incorporates a sensor which is a film or layer of NixCo1-xOy where x is from 0.1 to 0.9, e.g., spinel. The CO is detected by measuring the change in the electrical properties of the sensor. The d... | 08/16/2005 |
| 6764588 | Method of and system for flushing one or more cells in a particle-based electrochemical power source in standby mode A method of and system for flushing one or more cells or components thereof in a particle-based electrochemical power source is provided. Reaction solution is delivered to and withdrawn from the one or more cells when the electrochemical power source is in a standby... | 07/20/2004 |
| 5695629 | Fluidized bed electrowinning of copper A fluidized bed electrowinning system and method includes a fluidized bed reaction vessel in which a fluidized bed of conductive particles serves as the cathode for the electrowinning reaction, the anodes being in the form of hollow tubes of electrochemic... | 12/09/1997 |
| 5643437 | Co-generation of ammonium persulfate anodically and alkaline hydrogen peroxide cathodically with cathode products ratio control An electrolytic cell and process for the cogeneration of a peroxy acid and salts thereof in an anolyte compartment of the cell and hydrogen peroxide at a desired ratio of an alkali metal hydroxide to hydrogen peroxide in the catholyte compartment of the c... | 07/01/1997 |
| 5514263 | Process for the recovery of metallic lead from battery paste A process for the direct recovery of metallic lead from battery paste in an electrolysis unit is disclosed. The electrolysis unit consists of an anode compartment and a cathode compartment separated by an ion selective membrane. The cathode consists of a ... | 05/07/1996 |
| 5348629 | Method and apparatus for electrolytic processing of materials A method and apparatus for the electrochemical processing of materials in which the material to be processed is located within an electrolyte that is subjected to strong local electromagnetic fields in a migrational transport layer, causing strong electro... | 09/20/1994 |
| 5158656 | Method and apparatus for the electrolytic preparation of group IV and V hydrides An electrochemical apparatus and method for supplying volatile hydrides of sufficient purity, at the proper pressure, and in the required volume, for direct introduction into a chemical vapor deposition reactor in which semiconductors are manufactured and... | 10/27/1992 |
| 5084147 | Process of synthesis of organic substances by an indirect electrochemical route with a redox system in the solid state A process of oxidation or reduction of organic substrates by an indirect electrochemical route is described. During oxidation, the electrochemical stage produces a metallic oxide having higher valence such as RuO2, NiOOH, which is applied to an... | 01/28/1992 |
| 4981563 | Electrolysis cell and method of producing chlorine A membrane electrolysis cell, particularly suited for producing chlorine, caustic soda and hydrogen by the electrolysis of brine, has its cathode formed by a static bed of a packing material capable of withstanding the cathodic conditions confined between... | 01/01/1991 |
| 4950366 | Method of production of D-arabinose A method has been developed of the production of D-arabinose as a base material in the production of vitamin B2. the substance of the method rests in that the solution of a salt of D-gluconic acid is subject to direct electrochemical degradation oxidation... | 08/21/1990 |
| 4913779 | Process and installation for electrolysis by percolation across one or several porous volumic electrodes The invention relates to a process and an apparatus for electrolysis by percolation through at least one porous volumic electrode, for carrying out an electrochemical reaction. The process is of the type comprising electrically polarizing each volumic ele... | 04/03/1990 |
| 4824531 | Electrolysis method and packed cathode bed for electrowinning metals from fused salts Described is a cell for the electrowinning of metals from fused salt baths, especially aluminum from cryolite-alumina, featuring a packed cathode bed of loose refractory materials resistant to the molten metal and disposed at the base of the cell.... | 04/25/1989 |
| 4775452 | Process for dissolution and recovery of noble metals Disclosed herein is a process for dissolving and recovering noble metals form used catalysts. Noble metal components are leached out from particles supporting or containing at least one noble metal or noble metal compound by subjecting particles them to e... | 10/04/1988 |
| 4569729 | Electrolyzing method and electrolytic cell employing fluidized bed In an electrolytic cell of the type which includes a cylindrical electrolytic cell main body divided into a main electrode chamber and an auxiliary electrode chamber by a diaphragm, and having main electrode particles in the main electrode chamber, which ... | 02/11/1986 |
| 4511441 | Method of operating a liquid-gas electrochemical cell The invention includes in its scope a method for electrochemically reacting a liquid with a gas in an electrochemical cell of the type having at least two electrodes separated by a liquid permeable separator. At least one of said electrodes is in physical... | 04/16/1985 |
| 4409073 | Process for the electrolytic reduction of metals and an improved particulate carbon electrode for the same One aspect of the present invention concerns an improved process for the electrolytic reduction of a metal from a metal compound and comprises the steps of providing a carbon cathode within a container, dissolving the metal compound in a molten salt elect... | 10/11/1983 |
| 4377455 | V-Shaped sandwich-type cell with reticulate electodes An electrolytic cell for the electrolysis of aqueous solutions to produce gaseous products is comprised of a housing, a separator traversing said housing to form an anode compartment and a cathode compartment, an anode in the anode compartment, a cathode ... | 03/22/1983 |
| 4285785 | Metal producing method In the production of metal by electrolysis of a metal compound dissolved in a molten solvent, the electrolysis is carried out with a bed of conductive pebbles.... | 08/25/1981 |
| 4272333 | Moving bed electrolysis A method of moving bed electrolysis, in which a packed bed comprising (at least superficially) conductive particles moves as a packed bed in electrolyte between two electrodes and in electronic contact with one of them, the particles emerging from the dow... | 06/09/1981 |
| 4257855 | Apparatus and methods for the electrolytic production of aluminum metal An electrolytic cell for the production of aluminum metal comprises a permanent hollow anode structure of substantially corrosion-resistant material, with numerous perforations in the base of said structure, a packed bed of consumable carbon pieces suppor... | 03/24/1981 |
| 4256557 | Copper electrowinning and Cr+6 reduction in spent etchants using porous fixed bed coke electrodes Exhausted Cr+6 oxidizing solutions containing Cu+2 values are electrolyzed by placing an exhausted Cr+6 etching or oxidizing solution containing copper ion and Cr+3 ions in an electrolytic cell containing at lea... | 03/17/1981 |
| 4244793 | Brine electrolysis using fixed bed oxygen depolarized cathode chlor-alkali cell Disclosed is a method of electrolyzing alkali metal chloride brine between an anode and a cathode, with oxidant feed to the cathode, where the cathode is a bed of porous particles having HO231 disproportionation catalyst. Also disclo... | 01/13/1981 |
| 4244795 | Process and apparatus for electrolytically removing metal ions from a solution thereof A process and apparatus are provided for electrolytically removing metal ions from a solution thereof with an electrochemical cell having cathode and anode compartments. In accordance with the invention, an aqueous solution is passed upwards through a bed... | 01/13/1981 |
| 4243498 | Nickel electrowinning using reduced nickel oxide as a fluidized cathode A fluid bed electrolysis process is provided for the recovery of nickel from nickel-containing solution, e.g., leach solution, in which a fluid bed of substantially pure nickel particles or pellets of size ranging from about 150 to 2000 microns is employe... | 01/06/1981 |
| 4240886 | Electrowinning using fluidized bed apparatus A fluid bed electrolysis system and process are provided for efficiently removing electroplatable metal ions from an electrolyte, the system utilizing a cell having an axially disposed anode surrounded by a cathode, the anode being partitioned from the ca... | 12/23/1980 |
| 4239607 | Electrochemical chlorine production process A process is provided for producing halogen gas from gaseous or aqueous halogen acid, wherein the halogen is mixed with a slurry of electrocatalytically active particles and pumped into an electrochemical cell. The slurry of said particles is then electro... | 12/16/1980 |
| 4226685 | Electrolytic treatment of plating wastes The known method of removing heavy metal and cyanide ions from plating waste solutions wherein the solution is passed through flow-through, high surface area electrodes to precipitate heavy metal ions and to oxidize cyanide is improved through the use of ... | 10/07/1980 |
| 4206020 | Electrochemical process using a fluidized electrode An extended surface area electrode for an electrochemical cell is provided by causing a bed of conducting particles to be expanded in the form of a fluidized bed by controlled upward flow of electrolyte through an electrode chamber containing current-carr... | 06/03/1980 |
| 4183792 | Method and cell for electrolytic oxidation of Ni(OH)2 with stationary bed electrode A method and cell are provided for anodically oxidizing a metal hydroxide slurry from a state of lower valence to a state of higher valence, the cell comprising an anode in the form of a bed of nickel pellets and a plurality of parallel-connected cathodes... | 01/15/1980 |
| 4177116 | Electrolytic cell with membrane and method of operation Describes electrolytic cell with dimensionally stable anodes, non-porous ion-selective membranes separating said anodes from the cathode compartment, and a porous, static bed of loose, conducting cathodic material in the cathode compartment, extending bet... | 12/04/1979 |
| 4171249 | Improvements in or relating to circulating bed electrodes An electrochemical cell is disclosed which includes a particulate electrode and a current conductor for feeding current to the particles of the particulate electrode, and means for flowing a fluid medium upwardly through the said particulate electrode, wh... | 10/16/1979 |
| 4141804 | Process for electrowinning metal from metal bearing solutions A process and an apparatus for electrowinning metal from metal bearing solutions is disclosed. A support solution containing a predetermined metal concentration is continuously recirculated through a cell having a porous grid supporting a bed of particula... | 02/27/1979 |
| 4124453 | Electrochemical processes A method of carrying out an electrochemical reaction comprises setting up a fluidized bed of particles at least some of which have at least their surfaces conducting or semi-conducting, using upwardly flowing liquid electrolyte, with or without reactant l... | 11/07/1978 |
