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| Number | Title | Issue Date |
| 7828955 | Ammonia gas sensors One embodiment of an ammonia gas sensor includes: a reference electrode, an ammonia selective sensing electrode and an electrolyte disposed therebetween. The sensing electrode comprises the reaction product of a main material selected from the group consisting of va... | 11/09/2010 |
| 7799202 | Method for determining parameters of a gas-selective electrode Gas-selective electrodes in liquid analyzing devices have a characteristic curve K with a linear portion L and a non-linear portion NL. In the non-linear portion NL, the characteristic previously could only be estimated so that determinations of the concentration we... | 09/21/2010 |
| 7413645 | Devices, systems and methods for testing gas sensors and correcting gas sensor output A method of adjusting the output of an electrochemical sensor includes the steps of: simulating the presence of an analyte gas electronically; measuring a response of the sensor to the electronic simulation; and adjusting the output of the sensor as a function of th... | 08/19/2008 |
| 7366161 | Full duplex voice path capture buffer with time stamp For diagnostic and trouble-shooting purposes, an audio/voice signal capture mechanism is adapted to be interfaced with a time division multiplexed (TDM) transport path-cascaded echo canceler and compression arrangement for an integrated access device (IAD). The audi... | 04/29/2008 |
| 7361257 | Electrochemical screening system Devices and methods for evaluating an electrochemical reaction are disclosed. A device includes an electrochemical cell having a cavity for containing a liquidus electrolyte, a first working electrode having at least one electrolytic surface at least partially withi... | 04/22/2008 |
| 7355415 | Method for on-line monitoring of condition of non-aqueous fluids A method for determining a condition of a highly resistive fluid in transportation and industrial equipment. The method is suitable for determining the condition of a non-aqueous fluid including applying a high-frequency voltage signal between electrodes immersed in... | 04/08/2008 |
| 7259575 | Method for on-line fuel-dilution monitoring of engine lubricant A method for determining a fuel-dilution condition of a lubricant used in transportation and industrial equipment. The method uses apparatus that applies a high frequency and optionally a low frequency oscillating signal to electrodes immersed in the fluid and quant... | 08/21/2007 |
| 7244345 | Electrochemical method and sensor for the detection of traces of explosives A system for highly sensitive electrochemical detection of trace nitro-aromatic compounds in air, uses a carbon or carbon/gold working electrode with a surface that is modified to increase the electron transfer kinetics of nitro-aromatic compounds. Chemical modifier... | 07/17/2007 |
| 7201831 | Impurity detection device There is provided a sample preparation device and method for preparing a sample of liquid for detection of impurities. First (40) and second (38) electrodes are provided, located for immersion in a liquid under test. A semipermeable membrane (42... | 04/10/2007 |
| 7189574 | Measurement of nitrogen content in a gas mixture by transforming the nitrogen into a substance detectable with nondispersive infrared detection A method of determining the amount of nitrogen in a gas mixture. The constituent gases of the mixture are dissociated and transformed to create a substance that may measured using nondispersive infrared adsorption techniques. ... | 03/13/2007 |
| 7087150 | Chloramine amperometric sensor A chloramine amperometric sensor includes a sensor body with an electrolyte disposed inside the sensor body. A membrane is coupled to the sensor body and adapted to pass chloramine therethrough. A reference electrode is disposed in the electrolyte and coupled to a f... | 08/08/2006 |
| 7074319 | Ammonia gas sensors One embodiment of an ammonia gas sensor includes: a reference electrode, an ammonia selective sensing electrode and an electrolyte disposed therebetween. The sensing electrode comprises the reaction product of a main material selected from the group consisting of va... | 07/11/2006 |
| 7069770 | Ammonia sensor element, heater, and method for making the same A sensor element can comprise a co-fired heater section, a sensing section, and a third insulating layer disposed between the electrode portion and the temperature sensor. The heater section can comprise a heater, a shield, and a temperature sensor, with a first ins... | 07/04/2006 |
| 7022215 | System and methods for analyzing copper chemistry The present invention relates to methods for removing the matrix effects caused by variance in copper concentration and acidity during measurement of the organic additive concentration in a sample copper plating solution. ... | 04/04/2006 |
| 6969604 | Electroporation chamber An electroporation chamber is provided wherein cells are borne by a fluid medium through a conductive mesh receiving electrode (with the mesh size being such that it allows passage of cells of the desired size/type) and into the chamber. The cells are then captured ... | 11/29/2005 |
| 6964575 | Sealed electronic module with seal-in-place connector header A sealed electronic module includes a housing having an open end for receiving a circuit board, and a slotted side wall for receiving a connector header mounted on the circuit board. The connector header fits snugly in the side wall slot and includes an integral tro... | 11/15/2005 |
| 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 |
| 6890422 | Oxidizable gas component sensor and method of using the sensor An electrochemical gas sensor determining the concentration of oxidizable gas components which has an electrochemical measuring cell having a measuring electrode and a reference electrode. Measuring electrode is made of a material which is not able, or not completel... | 05/10/2005 |
| 6827839 | Plating bath analysis Disclosed are methods for determining the quantity of leveler in an electroplating bath in the presence of other organic additives, such as accelerators, brighteners and suppressors. Such methods are fast, work over a broad concentration range of components and can ... | 12/07/2004 |
| 6709568 | Method for determining concentrations of additives in acid copper electrochemical deposition baths The present invention relates to a method for determining concentration of brightener and leveler contained in an aqueous acid metal electroplating solution, by firstly determining the concentration of the brightener at a first set of measurement conditions, and sec... | 03/23/2004 |
| 6709561 | Measurement of the concentration of a reducing agent in an electroless plating bath The concentration of a reducing agent in an electroless bath for plating a first metal is determined from the effect of the reducing agent on the electrodeposition rate of a second metal. For electroless cobalt and nickel baths, a sample of the electroless plating b... | 03/23/2004 |
| 6627066 | Method of measuring the concentration of a leveler in a plating liquid The concentration of a leveler in a plating liquid that is used by a plating apparatus for filling metal such as copper in interconnection trenches and holes defined in the surface of a semiconductor substrate or the like is determined based on a peak are... | 09/30/2003 |
| 6572753 | Method for analysis of three organic additives in an acid copper plating bath Acid copper electroplating baths used to form ultra-fine circuitry features on semiconductor chips contain suppressor, anti-suppressor and leveler additives that must be closely controlled in order to obtain acceptable copper deposits. Cyclic voltammetric... | 06/03/2003 |
| 6521119 | Method and device for the detection of not easily volatized substances A method and device for the detection of substances such as nitrotoluene, trinitrotoluene, dinitrotoluene, or derivatives, wherein a working electrode and an opposing electrode are contacted with the substance via a viscous electrolyte layer and a voltage... | 02/18/2003 |
| 6428665 | Electrochemical gas sensor An electrochemical gas sensor has a first gas diffusion electrode for a first reaction gas, which is inactive with respect to a second reaction gas at least in a first potential window, and a second gas diffusion electrode for the second reaction gas, whi... | 08/06/2002 |
| 6416652 | Method for measuring ammonia in biochemical processes The present invention relates to apparatus and a method for measuring ammonia in biochemical processes, and more particularly to apparatus for real time measuring the amount of ammonia in a liquid with or without suspended solids.... | 07/09/2002 |
| 6379529 | Sensor element design for determining the concentration of oxidizable constituents in a gas mixture The invention proposes a sensing element which serves to determine the concentration of oxidizable constituents in a gas mixture, in particular of hydrocarbons, NO, and NH3. Electrically conductive spinels of the general formula ABB'O4 | 04/30/2002 |
| 6312585 | Method for determining oxidizable constituents in a gaseous mixture A method and arrangement is described for determining oxidizable constituents in a gas mixture by using a solid electrolyte cell with at least one reference electrode and at least one working electrode made of electrically conducting mixed oxides which is... | 11/06/2001 |
| 6299743 | Electrolytic generation of nitrogen The invention provides methods and devices for the electrochemical generation of nitrogen from organic nitrogen compounds, such as hydrazides (RCONHNH2), the corresponding organic hydrazino-carboxylates (RCO2 NHNH2) and am... | 10/09/2001 |
| 6284125 | Electrochemical cell A method for determining the concentration of a reduced (or oxidised) form of a redox species in an electrochemical cell of the kind comprising a working electrode and a counter electrode spaced from the working electrode by a predetermined distance, said... | 09/04/2001 |
| 6248224 | Toxic sensor and method of manufacture An electrochemical sensor is described for the analysis of ammonia in air functioning in an amperometric measuring operation. The cell consists of either an immobilized organic electrolyte or a water based electrolyte having in both cases a dissolved Mn | 06/19/2001 |
| 6177000 | Biosensor comprising a lipid membrane containing gated ion channels A biosensor has a lipid membrane (7) containing gated ion channels sensitive to the presence or otherwise of an analyte molecule in a sample applied, in use, to a first side of the lipid membrane (7). The lipid membrane (7) is disposed between a pair of e... | 01/23/2001 |
| 6090267 | Methods and apparatus for quantitative analysis of a sample Methods for determining the amount of volatile electrolyte present in an aqueous liquid sample comprise transferring the electrolyte from the aqueous liquid sample to an absorber solution across a gas-permeable membrane which is non-passable to the aqueou... | 07/18/2000 |
| 6074539 | Electrochemical sensor for the detection of hydrogen cyanide The present invention provides an electrochemical sensor for the detection of hydrogen cyanide. In general, the electrochemical sensor includes a housing having disposed therein a working electrode, a reference electrode and a counter electrode. The elect... | 06/13/2000 |
| 6001240 | Electrochemical detection of hydrogen cyanide The present invention provides an electrochemical sensor for the detection of hydrogen cyanide. In general, the electrochemical sensor includes a housing having disposed therein a working electrode, a reference electrode and a counter electrode. The elect... | 12/14/1999 |
| 5942102 | Electrochemical method A method for determining the concentration of a reduced or oxidized form of a redox species in an electrochemical cell (FIG. 10) of the kind comprising a working electrode (2) and a counter electrode (16) spaced from the working electrode such that reacti... | 08/24/1999 |
| 5820745 | Method of measuring the concentration of a gas in a gas mixture and electrochemical sensor for determining the gas concentration The invention relates to a method as well as to an electrochemical sensor for measuring the concentration of at least one predetermined gas in a gas mixture by means of an electrolyte provided with a first and a second surface-mounted electrode, which are... | 10/13/1998 |
| 5733437 | Method for detecting small molecules in aqueous liquids A method for detecting organic molecules such as benzene, xylene, ethylbenzene and toluene present in trace quantities in aqueous solutions is provided. The method uses a zeolite having a multiple cage structure, specifically cages of two different volume... | 03/31/1998 |
| 5662806 | Hemodialysis monitoring system for hemodialysis machines An improved on-line real time hemodialysis monitoring system for hemodialysis treatment. The hemodialysis monitoring system quantitates the rate and amount of a constituent, such as urea, removed during the hemodialysis treatment by measuring the constitu... | 09/02/1997 |
| 5626738 | Methods for the separation and detection of nitrosothiols A method for detecting a nitrosothiol in an eluant from a chromatographic process including passing the eluant through a series of electrodes comprising an upstream working electrode and a downstream working electrode. The upstream working electrode is ma... | 05/06/1997 |
