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7601233 |
Electrochemical gas sensor with passage for receiving gas
The invention relates to an electrochemical gas sensor having improved response time and sensitivity. The electrochemical gas sensor includes a substrate for providing a surface upon which a film...
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7591938 |
Method and device for transporting or binding-specific separation of electrically charged molecules
Electrically charged molecules need to be transported in order to create a DNA sensor. The following measures are undertaken: base metals are introduced into a solution as a positive ion;...
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7578914 |
Gas concentration measuring apparatus designed to compensate for output error
A gas concentration measuring apparatus for use in air-fuel ratio control of motor vehicle engines is provided which is designed to determine the concentrations of oxygen at different resolutions...
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7432006 |
Electrochemical probe for screening multiple-cell arrays
Novel systems for combinatorially screening an array of electrochemical cells are disclosed. The screening aparatus may comprise a system of electrodes and electrolytes common to each of the...
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7410558 |
Method and apparatus for determining a total concentration of a component in a mixture of components
The invention relates to a method and apparatus for determining a total concentration of a component in a sample, including a reactor for oxidizing or reducing the sample, a chromatographic column...
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7382004 |
Semiconductor sensing device
A semiconductor sensing device in which a sensing layer is exposed to a medium being tested in an area below and/or adjacent to a contact. In one embodiment, the device comprises a field effect...
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6913849 |
Method of screening compositions for electrocatalytic activity in a gas diffusion electrode
A novel process and apparatus to combinatorially screen a large number of discrete compositions for electrocatalytic activity have been developed. The apparatus contains a cell body adjacent to a...
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6872290 |
Electrochemical gas sensor with passage for receiving gas
The invention relates to an electrochemical gas sensor having improved response time and sensitivity. The electrochemical gas sensor includes a substrate for providing a surface upon which a film...
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6846639 |
Method for detecting pathogens attached to specific antibodies
The use of impedance measurements to detect the presence of pathogens attached to antibody-coated beads. In a fluidic device antibodies are immobilized on a surface of a patterned interdigitated...
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6811037 |
Sensor and/or separating element and process for the production and use thereof
The invention provides a mechanically stable substrate having at least one through-opening, a perforated membrane which is integral or fluid-tightly connected with the substrate and which extends...
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6692856 |
High throughput screening device for combinatorial chemistry
A high throughput screening device for combinatorial chemistry, comprising a membrane electrode assembly, an array of sensor electrodes and one or more common electrodes, wherein a total...
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6617168 |
Evaluation method and evaluation system of free hypohalous acid concentration
The present invention provides an evaluation method and an evaluation system of free halogen concentration which eliminate the necessity of early exchanging or recycling of catalysts, as compared...
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6616820 |
Exhaust species sensing method and device
A gas sensor for sensing NO x having electrochemical cells wherein dielectric material surrounds electrolytes except where electrodes are attached. Thereby, the exhaust gas is effectively...
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6509148 |
Method for fabricating biosensors using hydrophilic polyurethane
Disclosed is a method for fabricating biosensors, using hydrophilic polyurethane. Bio-active reagents, including enzymes, antibodies, antigens, cells and receptors, are mixed with hydrophilic...
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6392417 |
Arrangement and method for detecting the end of life of an aqueous bath utilized in semiconductor processing
Arrangement and method for detecting the end of life of an aqueous bath utilized in semiconductor processing, the bath containing water, an amount of hydrogen peroxide and an amount of a...
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6245847 |
Electrolyte
An electrolyte comprises a composite of a polymer and a molten salt electrolyte immobilized within the polymer. The electrolyte is stable and ionically conducting at a temperature substantially...
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6018982 |
Gas-permeable connecting lead for a probe
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5521101 |
Monitoring bioelectrochemical reactions and novel media for bioelectrochemical reactions
A method of determining an analyte in the gaseous or vapour phase and in which a bioreceptor or biomimic is retained at an electrode. The bioreceptor or biomimic is preferably retained at a support...
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5518600 |
Oxygen concentration detection apparatus
An oxygen concentration detection apparatus for an internal combustion engine is capable of starting feedback control of an air-fuel ratio in the shortest time possible after the engine has been...
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5507174 |
Polarographic sensor
A polarographic sensor for determining concentration of certain components including oxygen or combustible fractions, such as hydrocarbons, hydrogen and carbon monoxide, in the exhaust gas of an...
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5439581 |
Solid electrolyte sensor
A solid electrolyte sensor device for determining gas concentrations in measurement gases, with a sensor formed by a solid electrolyte which is arranged between at least two electrodes. The...
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5366610 |
Air fuel ratio detecting device
An air fuel ratio detecting device which is improved in accuracy as compared to similar prior art devices comprises a sensor cell for developing an electrical signal in response to the difference...
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5362975 |
Diamond-based chemical sensors
A chemical sensor includes a diode or a transistor fabricated in diamond. A diamond-based diode chemical sensor includes a first diamond layer of first conductivity type and a second diamond or...
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5314604 |
Sensor element for limit current sensors to determine the λ-value of gas mixtures
A sensor element for broad band sensors to determine the λ-value of gas mixtures is suggested. This sensor element can be manufactured in ceramic-sheet and screen-printing technology and is...
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5236569 |
Air/fuel ratio sensor having resistor for limiting leak current from pumping cell to sensing cell
An air/fuel ratio sensor with a sensing element having an electrochemical oxygen pumping cell including a first oxygen ion-conductive solid electrolyte body, and a first and a second electrode...
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5223222 |
Automatic chemistry analyzer
An automatic chemistry analyzer includes a flow cell mounted so that flow through the cell and tubing connected to the cell is visible from the front of the housing. The electrolytes to the cell...
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5186810 |
Oxygen sensor
An oxygen ion conductive solid-electrolyte plate (1) has first and second opposite surfaces. A plurality of negative electrodes (21b, 22b) and positive electrodes (21a, 22a) are formed on the first...
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5137615 |
Sensor element for limiting current sensors for determination of the λ value of gas mixtures
A sensor element for limiting current sensors for determination of the λ-value of gas mixtures is proposed, which has at least one outer pumping electrode and one inner pumping electrode, on a...
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5118398 |
Method and an apparatus for detecting ionizable substance
The amount of ionizable substance within a stream can be continuously monitored through the use of an ionizable substance detector. The substance is ionized at an electrode producing ions and free...
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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...
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5064618 |
Sensor arrangements
A disposable cartridge for use in a clinical sensing arrangement interfaces electrically with a host instrument capable of responding to electrical signals generated by detector devices...
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5034112 |
Device for measuring concentration of nitrogen oxide in combustion gas
For use on automobiles, the invention provides a compact device for measuring the concentration of a nitrogen oxide in a combustion gas such as an exhaust gas of an internal combustion gas. The...
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4988428 |
NOx concentration measuring apparatus
An NOx concentration measuring apparatus employing first and second wide-range air/fuel ratio sensors for measuring an NOx concentration of gases introduced thereto through a first passage. First...
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4985126 |
Apparatus and process for continuously monitoring concentrations of gaseous components in gas mixtures, with exception of O.sub.2
A process and apparatus for continuously monitoring of concentrations of gaseous components in gas mixtures, with the exception of O 2 . The desired concentration values are obtained simultaneously...
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4950380 |
Limiting current-type oxygen sensor
A limiting current-type oxygen sensor including (a) a pair of oxygen ion-permeable substrates made of a zirconia solid electrolyte; (b) at least one diffusion pore provided in at least one of the...
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4927517 |
NOx sensor having catalyst for decomposing NOx
An NOx sensor having an electrochemical cell having a solid electrolyte body and a first and a second electrode, a portion that permits restricted communication of the first electrode with an...
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4905652 |
Device for measuring a component of a gaseous mixture
A device for detecting and measuring the concentration of a gas in a mixture of gas such as oxygen in the exhaust gas of an internal combustion engine and circuits for using that measurement to...
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4877506 |
Monolithic solid electrolyte oxygen pump
A multi-layer oxygen pump having a one-piece, monolithic ceramic structure affords high oxygen production per unit weight and volume and is thus particularly adapted for use as a portable oxygen...
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4851103 |
Moisture measuring device for high temperature gas
A moisture (H 2 O) measuring device for high temperature gas deriving the moisture content by taking a difference between measured values of oxygen concentration by an operational process. The one...
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4824549 |
Exhaust gas sensor for determining A/F ratio
An oxgen sensor for detecting a measurement gas such as exhaust gases existing in an external space, which has a sensing element having a gas-diffusion space which communicates with the external...
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4824548 |
Electrochemical gas sensor
An electrochemical device for detecting a measurement fluid, which includes a planar solid electrolyte body, a first electrode formed on the planar solid electrolyte body and substantially exposed...
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4822465 |
Hydrogen sulphide sensor
Hydrogen Sulphide is a toxic gas present in many environments. It is necessary for a detector to be highly sensitive and not to respond to other common gases. The sensor is made up of electrodes...
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4814061 |
Hot gas measuring probe
An oxygen sensor is provided with an electrolyte tube formed in two parts, one part is an elongated tube and the other part is a sacrificial pellet which thermally insulates the tube from thermal...
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4814059 |
Electrochemical device having a heater and leak protection electrode
An electrochemical device including an electrochemical cell having a first solid electrolyte, and at least one pair of electrodes formed on the first soild electrolyte, and a heating portion having...
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4808293 |
Oxygen sensor and method of making such sensor
An oxygen conductive solid electrolyte plate has first and second opposite surfaces, First and second electrodes fixedly extend on the first and second surfaces of the electrolyte plate...
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4787966 |
Oxygen concentration sensor for an internal combustion engine
An oxygen concentration sensor having an oxygen ion conductive solid electrolyte member forming a gas diffusion restricted region into which a measuring gas is introduced, includes a pump current...
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4772376 |
Air/fuel ratio sensor having oxygen sensor cell and oxygen pump cell
An air/fuel ratio sensor has an oxygen sensor cell including a primary measuring element in direct contact with a gas such as exhaust gases of an automotive engine, and an oxygen pump cell formed...
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4759827 |
Oxygen concentration detection apparatus with an adjusting device and its adjusting method
An oxygen concentration detection apparatus includes a detection unit having a pair of oxygen-ion conductive solid electrolyte walls forming first and second gas retaining chambers on which first...
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4722778 |
Gas sensor with gas diffusion chamber between two platy solid electrolyte cells
The invention relates to a gas sensor having first and second solid electrolyte cells each of which has a solid electrolyte plate, e.g. a zirconia plate, and a pair of porous electrode layers...
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4718999 |
Air-fuel ratio detector
An air-fuel ratio in the lean range is detected by measuring a limiting current when oxygen diffused to a first electrode is pumped to a second electrode via a solid electrolyte. A stoichiometric...
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