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| Number | Title | Issue Date |
| 8163158 | Operation of an electrolysis cell An electrolysis cell is controlled for operation under varying electrical power supply conditions. A flow of feed stock to the cell includes an electrolysis reactant at a controlled concentration. A varying amount of electrical power is supplied to the cell to produ... | 04/24/2012 |
| 8152987 | Method for ensuring and monitoring electrolyzer safety and performances There is described a method for ensuring and monitoring electrolyzer safety and performances in a manufacturing process which uses at least one electrolyzing cell containing at least one cathode and at least one anode separated by a membrane, comprising the step of:... | 04/10/2012 |
| 8114265 | Efficiency optimization and damage detection of electrolysis cells There is described a method and a system for evaluating damage of a plurality of cells in an electrolyser. The method comprises acquiring a voltage for each one of the cells; comparing the voltage to at least two threshold voltage levels; classifying the cells as on... | 02/14/2012 |
| 8062499 | Charge movement detector for electrochemically activated liquids A method and apparatus are provided for energizing an electrolysis cell receiving a liquid to be electrochemically activated and contacting the liquid with an exposed, conductive tip of a voltage detector. The voltage detector generates a humanly-perceptible indicat... | 11/22/2011 |
| 8025784 | System and method for controlling the generation of a biocidal liquid Methods and systems for generating biocidal solution having a predetermined level of available free chlorine and pH, including an electrolytic cell that generates the biocidal solution by an electrolytic reaction, the electrolytic cell including an input pipe for re... | 09/27/2011 |
| 7964084 | Methods and apparatus for the synthesis of useful compounds The present invention relates to methods and apparatus for activation of a low reactivity, non-polar chemical compound. In one example embodiment, the method comprises introducing the low reactivity chemical compound to a catalyst. At least one of (a) an oxidizing a... | 06/21/2011 |
| 7378009 | Method of controlling an aluminum cell with variable alumina dissolution rate A method of controlling an aluminum reduction cell including the following steps: maintaining alumina concentration within preset limits by alternating base, underfeed and overfeed modes; measuring cell voltage and potline amperage... | 05/27/2008 |
| 7288180 | Electric current control method and apparatus for use in gas generators The invention provides a method and apparatus for current control in gas generators capable of generating a fluorine or fluoride gas by and in which the electrolysis can be maintained in an optimum condition, stable operation is possible and no manpower is demanded.... | 10/30/2007 |
| 7266686 | Multicasting method and apparatus A scalable architecture is disclosed for delivery of real-time information over a communications network. Embedded into the architecture is a control mechanism that provides for the management and administration of users who are to receive the real-time information.... | 09/04/2007 |
| 7211175 | Method and apparatus for potential controlled electroplating of fine patterns on semiconductor wafers Controlled-potential electroplating provides an effective method of electroplating metals onto the surfaces of high aspect ratio recessed features of integrated circuit devices. Methods are provided to mitigate corrosion of a metal seed layer on recessed features du... | 05/01/2007 |
| 7192511 | Method for regulating an electrolytic cell The invention relates to a regulation method for an electrolytic cell for the production of aluminium by means of reduction of alumina dissolved in a molten cryolite bath, wherein a solidified bath ridge is formed on the internal walls of the pot, a quantity B, refe... | 03/20/2007 |
| 7138005 | Nickel refining method The present invention provides a nickel refining method which uses nickel sulfide produced from nickel oxide ore using a hydrometallurgical process, as the raw material, and in which chlorine leaching is performed using a chloride solution, wherein a cementation rea... | 11/21/2006 |
| 7135104 | Method for regulating an electrolysis cell The invention relates to a regulation method for an electrolytic cell for the production of aluminium by means of reduction of alumina dissolved in a molten cryolite bath and comprises the addition, in the electrolyte bath, during pre-determined time intervals p ref... | 11/14/2006 |
| 7122109 | Method for the improvements of current efficiency in electrolysis The invention relates to a method for the improvement of current efficiency in electrolysis. According to the method, a theoretical cell voltage is first calculated, which is compared with the measured voltage. The cumulative difference between the theoretical and m... | 10/17/2006 |
| 7081193 | Multi-stack isolation detection system A system for detecting an isolation fault in a multi-stack fuel cell system. The system determines the percentage of the voltage from each stack in the multi-stack that contributes to the voltage at a positive terminal and a negative terminal of the stack when a no-... | 07/25/2006 |
| 7045238 | SORFC power and oxygen generation method and system A solid oxide regenerative fuel cell system is used to supply power in a fuel cell mode and to generate metabolic oxygen and a hydrocarbon fuel reserve in an electrolysis mode. The system may also be used as a secondary power source or for energy peak shaving applic... | 05/16/2006 |
| 6949179 | Methods for forming magnetically modified electrodes and articles produced thereby The present invention is directed to methods for making magnetically modified electrodes and electrodes made according to the method. Such electrode are useful as electrodes in batteries, such as Ni-MH batteries, Ni—Cd batteries, Ni—Zn batteries and Ni—Fe batt... | 09/27/2005 |
| 6933071 | Solid polymer type fuel cell and production method thereof A polymer electrolyte fuel cell comprising a polymer electrolyte made of an ion exchange membrane, catalyst layers disposed on both sides thereof and current collectors disposed on the outer sides thereof, wherein a solvent-soluble fluorine-containing polymer (prefe... | 08/23/2005 |
| 6632347 | Electrochemical treatment of an aqueous solution A method and apparatus for the electrochemical treatment of an aqueous solution in an electrolytic cell is described. Output solution having a predetermined level of available free chlorine is produced by applying a substantially constant current across t... | 10/14/2003 |
| 6508928 | Recovery of metal from solution The invention relates to a method for controlling the recovery of a metal, such as silver, from a solution flowing through an electrolytic cell. A constant current is applied between the anode and cathode of the cell and the rate of change of the voltage ... | 01/21/2003 |
| 6436270 | Method and device for controlling the movement of a feeding and breaking chisel in an aluminum production cell A method and a device for controlling the movement of a combined alumina feeding and crust breaking chisel in an aluminum production cell, wherein the chisel is moved downwards and upwards by means of a pneumatic cylinder which is alternatively fed with p... | 08/20/2002 |
| 6207037 | Recovery of metal from solution Recovery of silver from a photographic fixer solution in an electrolytic cell is controlled so as to maintain a high current efficiency whilst minimizing unwanted side effects. The difference between plating voltages when operating at two different curren... | 03/27/2001 |
| 6187167 | Recovery of metal from solution Recovery of silver from a photographic fixer solution in an electrolytic cell is controlled so as to maintain a high current efficiency whilst minimizing unwanted side effects. The rate of change of plating voltage at constant current through the cell is ... | 02/13/2001 |
| 6179986 | Solid polymer electrolyte electrochemical oxygen control system with integral reactor feedback sensing Disclosed is a novel proton-exchange membrane (PEM) based solid polymer electrolyte electrochemical oxygen control (EOC) system that can deplete and control the oxygen from a closed container to levels sufficient for both disinfestation and preservation. ... | 01/30/2001 |
| 6176997 | Apparatus and method for copper extraction by in-situ electrolysis in heap-leaching of ores Copper is extracted from a heap of low-grade ore by transforming the heap into an electrolytic cell, and imposing a voltage thereon. Anodic conditions of redox and pH cause the sulphide to break down, and the copper to pass into solution. The copper can b... | 01/23/2001 |
| 6136177 | Anode and cathode current monitoring The present invention provides a method and apparatus for determining the current densities in an alumina reduction cell by the measuring of magnetic fields without contact with the anodes or cathodes. The current density is modelled by determining the cu... | 10/24/2000 |
| 6088630 | Automatic control system for unit operation Automatic control systems, and corresponding processes, for controlling either an anode adjuster in a chlor/alkali cell or at least one average middle temperature of a distillation column wherein the combination of feedback control from at least one real ... | 07/11/2000 |
| 6086724 | Method for forming particulate reaction and measuring method thereof Particulates are trapped by laser beam and brought into contact with electrodes to electrochemically and spectroscopically measure the reaction process thereof. Precise measurement of the process of chemical reactions such as electrochemical and photochem... | 07/11/2000 |
| 6071399 | Electrolytic cell An electrolytic cell comprises a housing (12), means (21) defining a liquid level (25) in said housing (12), a first contact surface (32) positioned above said liquid level (25) for making contact with a removable electrode (20) when positioned in said ho... | 06/06/2000 |
| 5951842 | Process for monitoring the electrolyte circulation in an electrolysis cell A process for monitoring the electrolyte circulation in an electrolysis cell, in which an electrolyte flow generated by a circulation pump is generated between the electrodes of the electrolysis cell and the electrolysis is performed by a constant electro... | 09/14/1999 |
| 5840172 | Direct current hydrogen generator, system and method The invention relates to an ultra-high purity gas generator system, such as a hydrogen gas generator system and method, which employs a direct current source to supply proportional electrical current to a cathode in an electrolyte cell. The system compris... | 11/24/1998 |
| 5833830 | Redox control in the electrodeposition of metals In one embodiment, a method of electrowinning a metal from an electrolyte comprises the steps of measuring the redox potential of the electrolyte to obtain a measured value, comparing the measured value with a predetermined optimum value and adding a redo... | 11/10/1998 |
| 5783060 | Electrolytic metal recovery method The cell controller 18 responds to a number of specific conditions including a flow switch 24 output signal 34 which indicates that fresh solution flows from a reservoir 14 into the metal solution tank 12. The cell will be caused to operate in the plating... | 07/21/1998 |
| 5733430 | Gas diffusion electrode and electrolytic method using it A gas diffusion electrode is constituted by forming a porous layer comprising a super-fine particle catalyst of silver or gold and a fluorine-containing material on a substrate and connecting a gas-liquid permeable collector to the substrate. The gas diff... | 03/31/1998 |
| 5505824 | Propellant generator and method of generating propellants A propellant generator is disclosed that automatically adjusts rates of input of lean and excess reactants to compensate for changes in rates of reactions in the generator. In a particular embodiment, the invention generates propellants methane (CH4 | 04/09/1996 |
| 5427877 | Method and apparatus for controlling an automatic silver recovery system for a photographic processor A method and apparatus for controlling an electrolytic silver recovery system for a photographic processor, the control being effected in response to the surface area of the photosensitive material moved through the processing solutions. The apparatus det... | 06/27/1995 |
| 5300199 | Method for recovering silver from a photographic fixing solution Silver is able to be recovered from a photographic fixing solution by circulating the solution through a unit separate from, but connected to, a main unit. In the separate unit the solution is subjected to electrolysis by anodic and cathodic electrodes. T... | 04/05/1994 |
| 5102513 | Apparatus and method for recovering metals from solutions The improved power supply is controlled by a microprocessor which operates with instructions stored in software in a programmable read only memory within the unit. As the microprocessor operates, it constantly reads the conditions of the actual voltage, a... | 04/07/1992 |
| 5074987 | Online energy flow measuring device and method for natural gas A method and device for measuring energy in fuel gas comprises a solid electrolyte oxygen pump for generating an amount of oxygen in response to current being supplied to the pump. A sample of the gas is mixed with the oxygen from the pump to produce a mi... | 12/24/1991 |
| 5066372 | Unitary multiple electrode sensor A unitary multiple electrode sensor for detecting analytes in test samples and devices for using them. The unitary multiple electrode sensor includes a sensor support member and at least one electrode array being deposited on the sensor support member, th... | 11/19/1991 |
