| Class / Patent application number | Description | Number of patent applications / Date published |
|---|
| 205337000 | Current, current density, or voltage | 26 |
| 20080296169 | Multi-cell single voltage electrolysis apparatus and method of using same - A method and apparatus for achieving high output efficiency from an electrolysis system ( | 12-04-2008 |
| 20090071838 | ELECTROCHEMICAL APPARATUS WITH RETRACTABLE ELECTRODE - Electrochemical apparatus and methods that support periodic, non-steady state, or discontinuous operation without suffering degradation of materials or loss of efficiency. The invention provides a means for positioning one or more electrodes into contact with electrolyte and means for retracting the one or more electrodes out of contact with the electrolyte. The means for positioning and means for retracting may be the same device or different devices. The means for positioning and means for retracting may be designed to provide automatic, passive, or fail-safe retraction of the electrode upon a given shutdown condition, such as a voltage of less than one Volt being applied between the first and second electrodes, expiration of a time period, an ozone concentration greater than a setpoint ozone concentration, contact pressure of less than 5 psig, and combinations thereof. | 03-19-2009 |
| 20090272652 | 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 indicator as a function of charge movement sensed by the voltage detector through the liquid. | 11-05-2009 |
| 20100065435 | ALUMINUM PRODUCTION PROCESS CONTROL - The method of process control is for a Hall-Héroult process of aluminum production from alumina ore in an industrial potline. The method includes measuring an array of sampled potline data including a plurality of cell voltages (V) and a plurality of line amperages (A) at a plurality of time points. The method also includes calculating a predicted voltage (PV) for each cell voltage and line amperage in the array. The method further includes controlling a plurality of alumina ore feed rates and a plurality of pot voltage settings based upon the predicted voltages. The method also includes calculating a plurality of bath temperatures based upon the predicted voltages. The PV variable is preferably used in an automated control environment. The PV variable is also preferably used to monitor cell noise levels, operating temperature, metal pad roll, and oscillatory electrical shorting events. | 03-18-2010 |
| 20100252442 | METHOD AND DEVICE FOR SELECTIVE CATION EXTRACTION BY ELECTROCHEMICAL TRANSFER IN SOLUTION AND APPLICATIONS OF SAID METHOD - In order to carry out a selective extraction of cations (M | 10-07-2010 |
| 20100276295 | ELECTROLYTIC HYDROGEN GENERATING SYSTEM - A hydrogen generating system includes a plurality of conductive plates, a first connector and a second connector, wherein each connector is connected to at least some of the plates, an amperage sensor configured to measure an actual amperage of the hydrogen generating system, and a temperature sensor configured to measure an actual temperature of the hydrogen generating system, and a controller. The controller includes a processor programmed to receive a target amperage, a maximum amperage threshold, a maximum temperature threshold, and an optimal temperature, select, based on the target amperage, certain of the plurality of conductive plates to receive an applied voltage, receive a measurement of an actual amperage and an actual temperature from the amperage sensor and the temperature sensor, respectively, compare the actual amperage and the actual temperature to the maximum amperage threshold and the optimum temperature, respectively, and adjust the applied voltage based on the comparison. | 11-04-2010 |
| 20100276296 | ELECTROLYTIC HYDROGEN GENERATING SYSTEM - A method of dynamically adding or removing a quantity of active plates in a plate assembly of a hydrogen generating system, the plate assembly comprising a plurality of plates. The method includes receiving a minimum amperage threshold, a maximum amperage threshold, a maximum temperature threshold, a first actual amperage, and a first actual temperature of a hydrogen generating system, selecting a first plurality of plates from the plate assembly, wherein the selection is based on at least one of the following: the minimum amperage threshold, the maximum amperage threshold, the first actual amperage, and the first actual temperature, and applying a first voltage to the first plurality of plates. | 11-04-2010 |
| 20100314259 | ELECTROLYTIC HYDROGEN GENERATING SYSTEM - A hydrogen generating system includes an electrode plate assembly including a plurality of electrode plates, a first connector and a second connector, each connector connected to at least some of the plates, an amperage sensor, a temperature sensor, and a controller capable of receiving signals from the amperage sensor and temperature sensor to monitor an amperage and a temperature of the hydrogen generating system. The controller includes a processor programmed to receive a target amperage, select, based on the target amperage, certain of the plurality of conductive plates to receive voltage input during a predetermined duty cycle, determine an actual amperage and an actual temperature resulting from the voltage input, compare the actual amperage and the actual temperature to a respective amperage threshold and temperature threshold; and adjust the duty cycle for applying voltage based on the comparison. | 12-16-2010 |
| 20110180417 | Method to prevent sulfur accumulation in membrane electrode assembly - A method of operating a hybrid sulfur electrolyzer to generate hydrogen is provided that includes the steps of providing an anolyte with a concentration of sulfur dioxide, and applying a current. During steady state generation of hydrogen a plot of applied current density versus concentration of sulfur dioxide is below a boundary line. The boundary line may be linear and extend through the origin of the graph with a slope of 0.001 in which the current density is measured in mA/cm2 and the concentration of sulfur dioxide is measured in moles of sulfur dioxide per liter of anolyte. | 07-28-2011 |
| 20110240483 | 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: determining a safe single voltage operation range depending of the current and corresponding to the normally working electrolyzing cell; determining a reference voltage deviation depending on the time derivation of the current; measuring the voltage over time at the terminals of the electrolyzing cell; determining the measured voltage deviation by calculating the time derivative of the measured voltage; comparing the measured voltage to the safe single voltage operation range and the measured voltage deviation to the reference voltage deviation over time; stopping the manufacturing process when the measured voltage is outside the safe single voltage operation range or the difference between the measured voltage deviation and the reference voltage deviation is outside a predetermined range or a single voltage behavior is different than the average of a group of reference cells. | 10-06-2011 |
| 20110315559 | QUALITY CONTROL METHODS FOR THE MANUFACTURE OF POLYMER ARRAYS - Described are quality control methods and devices for the reproducible manufacturing and integrity monitoring of polymers on electrochemical synthesis and detection chips. The devices and methods allow for simultaneous manufacturing and synthesis of polymers. | 12-29-2011 |
| 20120024715 | SYSTEMS AND METHODS FOR SELECTIVE HYDROGEN TRANSPORT AND MEASUREMENT - Systems and methods for selectively removing hydrogen gas from a hydrogen-containing fluid volume are disclosed. An exemplary system includes a proton exchange membrane (PEM) selectively permeable to hydrogen by exclusively conducting hydrogen ions. The system also includes metal deposited as layers onto opposite sides or faces of the PEM to form a membrane-electrode assembly (MEA), each layer functioning as an electrode so that the MEA functions as an electrochemical cell in which the ionic conductors are hydrogen ions, and the MEA functioning as a hydrogen selective membrane (HSM) when located at the boundary between a hydrogen-containing fluid volume and a second fluid. | 02-02-2012 |
| 20120228145 | CLEANING SOLUTION GENERATOR - A cleaning solution generator comprising a housing with an interior reservoir and a brine tank, the cleaning solution generator being configured to generate an alkaline solution from a mixed solution and to operably direct the generated alkaline solution to the interior reservoir of the housing. | 09-13-2012 |
| 20130186767 | METHOD AND APPARATUS FOR COMBINED ELECTROCHEMICAL SYNTHESIS AND DETECTION OF ANALYTES - Described are devices and methods for detecting binding on an electrode surface. In addition, devices and methods for electrochemically synthesizing polymers and devices and methods for synthesizing and detecting binding to the polymer on a common integrated device surface are described. | 07-25-2013 |
| 20130206604 | Apparatus for Producing and Delivering Ozonated Water - An apparatus has a tank with an interior for containing water, a nozzle for directing ozonated water out of the spray apparatus, and an electrolytic cell located between the nozzle and the tank. The electrolytic cell is configured to ozonate water as the water flows from the tank to the nozzle. The apparatus also includes a power source for providing electric potential to the electrolytic cell. The tank, nozzle, and electrolytic cell all are part of a single spray bottle or dispenser (e.g., like a soap dispenser). | 08-15-2013 |
| 20140001053 | Generator and Method for Forming Hypochlorous Acid | 01-02-2014 |
| 20140116886 | METHOD FOR EXTRACTING NOBLE AND NON-FERROUS METALS FROM REFRACTORY RAW MATERIALS - A method for extracting noble and non-ferrous metals from refractory raw materials includes a first stage electric treatment of ground pulp in a chloride solution and a subsequent second stage of extracting commercial metals, carried out in one reactor using electrolysers with graphite anodes and steel cathodes. The reactor is fed with pulp having an S:L ratio of 1:(1-20) in a solution with a chlorine concentration of 60-180 g/L, being acidified to pH=0.2-1.0, it's agitated, the volume current density is set to 1000-10000 A/m | 05-01-2014 |
| 20140124378 | Electrolytic On-Site Generator - Method and apparatus for a low maintenance, high reliability on-site electrolytic generator incorporating automatic cell monitoring for contaminant film buildup, as well as automatically removing or cleaning the contaminant film. This method and apparatus preferably does not require human intervention to clean. For high current density cells, cleaning is preferably performed by reversing the polarity of the electrodes and applying a lower current density to the electrodes, preferably by adjusting the salinity or brine concentration of the electrolyte while keeping the voltage constant. Electrolyte flow preferably comprises water and brine flows which are preferably separately monitored and automatically adjusted. For bipolar cells, flow between modules arranged in parallel is preferably approximately equally distributed between modules and between intermediate electrodes within each module. | 05-08-2014 |
| 20140202871 | SYSTEM AND METHOD FOR GENERATING A CHLORINE-CONTAINING COMPOUND | 07-24-2014 |
| 20140367270 | SYSTEMS AND METHODS FOR CONTROLLING ELECTROCHEMICAL PROCESSES - A system is disclosed for controlling an electrochemical process. The system has a power source that is coupled to a power amplifier. The power amplifier is configured to provide an electromotive force (emf) signal, and a plurality of electrodes apply the emf signal to an electrochemical solution. A control element is configured to control the power amplifier such that the emf signal exhibits a predetermined frequency, amplitude, and duty cycle for reducing a thickness of the Nernst diffusion layer such that an operational parameter is set to a predetermined value. | 12-18-2014 |
| 20150021193 | METHOD AND SYSTEM FOR MONITORING THE FUNCTIONALITY OF ELECTROLYSIS CELLS - Method and system for monitoring the functionality of electrolysis cells for use in chlor-alkali electrolysis. The method uses the analysis of the current/voltage characteristic of the cells in relation to an AC voltage overlaid on the operating voltage | 01-22-2015 |
| 20150090603 | METHOD FOR OPERATING THE WATER ELECTROLYSIS SYSTEM - A water electrolysis system includes a high-pressure hydrogen production unit for electrolyzing water to generate oxygen and high-pressure hydrogen (the pressure of the high-pressure hydrogen being higher than that of the oxygen), and a gas-liquid separation unit for removing water contained in the high-pressure hydrogen. The gas-liquid separation unit is placed on a hydrogen pipe for discharging the high-pressure hydrogen from the high-pressure hydrogen production unit. In addition, the water electrolysis system includes a high-pressure hydrogen supply pipe for transferring dewatered high-pressure hydrogen from the gas-liquid separation unit, a cooling unit, which is placed on the high-pressure hydrogen supply pipe and is capable of variably controlling the temperature of the high-pressure hydrogen to adjust the humidity of the high-pressure hydrogen, and a control unit. | 04-02-2015 |
| 20150329980 | PROCESS FOR MONITORING, PROTECTION AND SAFETY SHUT-DOWN OF AN ELECTROLYSER SYSTEM - The invention concerns a process for monitoring failure situations related to feed and/or purge flow in electrolyser cells, stacks or systems, said monitoring process being combined with appropriate actions to be taken in case of such failure situations, wherein (a) the current and/or the voltage are monitored and controlled over a single cell, over all the cells or over one or more selected cells in a stack or a system of stacks, (b) in case the current, the voltage or the ratio between voltage and current crosses its pre-defined threshold value, a failure mode is detected and communicated to the control system, and c) the voltage levels of the system are adjusted to be within safe limits (safe-mode limits). | 11-19-2015 |
| 20160002795 | MULTI-STACK ELECTROCHEMICAL COMPRESSOR SYSTEM AND METHOD FOR OPERATING - A multi-stack electrochemical hydrogen compressor (EHC) system is provided. The EHC system may have two or more EHC stacks, wherein each EHC stack includes at least one electrochemical cell and a power supply. The EHC system may also have a controller in communication with the power supply of each EHC stack, wherein the controller is configured to reduce total energy consumption of the EHC system by independently controlling the power supply of each EHC stack. | 01-07-2016 |
| 20160040310 | HYDROGEN PRODUCTION SYSTEM AND METHOD FOR PRODUCING HYDROGEN - A hydrogen production system that achieves a highly-efficient hydrogen production operation even when a time-varying electric power source is used is provided. | 02-11-2016 |
| 20160177458 | METHOD TO REGENERATE OXYGEN TRAPS | 06-23-2016 |
