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6143150 Biological gas sensor  
A biological gas sensor for measuring a carbon dioxide partial pressure in an alimentary canal while excluding the influences of hydrogen sulfide and/or weak acid is disclosed. The gas sensor...
6129824 Electrochemical sensor for the detection of hydrogen chloride  
The present invention provides an electrochemical sensor for the detection of hydrogen chloride. In general, the electrochemical sensor comprises a housing having disposed therein a working...
6129825 Electrochemical gas sensor  
A simple, reliable, and leak-proof electrochemical sensor for detection of toxic gases. The sensor comprises a housing having an electrochemical gas sensor cell with an electrolyte and first and...
6129823 Low volume electrochemical sensor  
An electrochemical sensor electrode strip that measures analyte concentration in an aqueous sample as small as 2.5 to 2.0 μL is described. Reduction in the minimum sample size is achieved by means...
6123827 Method for calibrating sensors used in diagnostic testing  
A method is disclosed for reliably calibrating a sensor used in diagnostic sensing of a predetermined parameter, e.g., CO2 partial pressure, O2 partial pressure, or pH, of a solution such as...
6123828 Method and apparatus for measuring ethanol vapor concentration  
A method and apparatus for measuring ethanol vapor concentration wherein a cell output is plotted with respect to time. The gradient of the steady rate portion of the plot is determined and an...
6117291 Microperfusion chamber assembly with base comprising silver chloride coated silver  
Apparatus for carrying out patch clamp technique utilized in studying the effect of certain materials on ion transfer channels in biological tissue, and more particularly patch clamp apparatus...
6099708 Three-electrode electrochemical gas sensor  
A simple, reliable, and leak-proof three-electrode electrochemical sensor for detection of toxic gases. The sensor comprises a housing having an electrochemical gas sensor cell with an electrolyte...
6099707 Apparatus for sensing oxygen concentration  
An apparatus and method for sensing a concentration of oxygen in a flow of gas in a breathing circuit for a patient. A biasing voltage is provided across a zinc-air cell so that the zinc-air cell...
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...
6083367 Oxygen electrode and its manufacture  
An oxygen electrode having: an electrode substrate; a first electrode and a first lead wire formed on the electrode substrate; an insulating layer formed on the electrode substrate covering the...
6080294 Gas sensor with dual electrolytes  
A highly accurate, long life, low cost gas sensor is disclosed, particularly useful for measuring oxygen in an environment. The gas sensor has a first, sensing electrode and a second, counting...
6077408 Biosensor and method of manufacturing the same  
Disclosed is a biosensor facilitating high accuracy quantification of a specific component in a sample solution with no adverse influence of solid substances. The biosensor comprises an...
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...
6068748 Extended use planar sensors  
A planar, solid-state electrochemical oxygen sensor having a substrate, conductive strips deposited on the substrate, and a dielectric layer insulating portions of the conductive strips except...
6068743 Brain-pO2 measuring device  
A measuring device for determining the oxygen partial pressure in human brain tissue has a probe (5) with a tube (7) of tissue-compatible plastic material in a measuring region surrounding an...
6066249 Method for calibrating an instrument for measuring electrolytes and metabolites by analysis of blood gases  
A method for calibrating an instrument for the analysis of blood gases which possesses ion-sensitive electrodes and gas-sensitive electrodes and is used for the determination, in a biological...
6063260 Patch clamp apparatus and technique having high throughput and low fluid volume requirements  
PCT No. PCT/EP95/02204 Sec. 371 Date Apr. 25, 1997 Sec. 102(e) Date Apr. 25, 1997 PCT Filed Jun. 7, 1995 PCT Pub. No. WO96/13721 PCT Pub. Date May 9, 1996Apparatus for carrying out patch clamp...
6051123 Multi-functional and NOx sensor for combustion systems  
A gas sensor is provided, having an electrolyte membrane, a sensing electrode, a counter electrode, a diffusion barrier for controlling access of gases to the sensing electrode, and in situ means...
6040077 Catalyst for membrane electrode assembly and method of making  
Nanostructured elements are provided for use in the electrode of a membrane electrode assembly for use in fuel cells, sensors, electrochemical cells, and the like. The nanostructured elements...
6030828 Microsensor and use of such microsensor  
The invention relates to a microsensor for determining the concentration of a primary substrate by measuring the concentration of a secondary substrate. The microsensor comprises a transducer (1)...
6024853 Electrochemical oxygen sensor  
An electrochemical oxygen sensor with a measuring electrode, an atmospheric oxygen electrode as a reference electrode, and an auxiliary electrode in an electrolyte is improved such that a stable...
6022463 Sensors with subminiature through holes  
The present invention is a sensor having an electrode formed in electrical contact with a subminiature through hole. Because of the small diameter of the through hole, the material that fills the...
6020052 Laminated membrane structure for polarographic measurement and methods of making said structures  
PCT No. PCT/US96/12412 Sec. 371 Date Jan. 28, 1998 Sec. 102(e) Date Jan. 28, 1998 PCT Filed Jul. 30, 1996 PCT Pub. No. WO97/04954 PCT Pub. Date Feb. 13, 1997An improved laminated enzyme containing...
6019879 Electrochemical gas sensor  
The present invention is directed to an electrochemical gas sensor network. The network includes a gas sensor for receiving a gas and for generating a target gas concentration signal. The gas...
6017440 Sensor arrays for detecting microorganisms  
A sensor array for detecting a microorganism comprising first and second sensors electrically connected to an electrical measuring apparatus, wherein the sensors comprise a region of nonconducting...
6004442 Analyte-selective sensor  
The invention concerns an analyte selective sensor for the qualitative and/or quantitative determination of ions or substances contained in solution. The proposed sensor (1) comprises at least one...
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...
5997706 Electrochemical measuring cell for detecting arsine and phosphine  
An electrochemical measuring cell for detecting arsine and phosphine, containing at least one working electrode (3) consisting of a catalytically inactive material and a reference electrode (4) in...
5985129 Method for increasing the service life of an implantable sensor  
Methods are described for extending the service life of implantable sensors having a silver-containing anodic reference electrode maintained at a high impedance, at least one noble metal cathodic...
5985117 Ion-selective membrane sensors with mercuracarborand ionophore  
Ion-selective membranes are disclosed which are suitable for use in ion-selective sensors. The membranes include a mercuracarborand ionophore. Exemplary ion-selective membranes include...
5958200 Electrochemical gas sensor  
The present invention pertains to an electrochemical gas sensor, which has an electrode system for the measurement and is directly coupled with the environment via a gas inlet. To avoid fault...
5958214 Electrochemical sensor with a solid electrolyte for measuring the gas concentration  
The invention relates to an electrochemical sensor to determine the concentration of a gas to be quantified, comprising a housing, a measuring electrode comprising a catalystically active material...
5944969 Electrochemical sensor with a non-aqueous electrolyte system  
Accordingly, the present invention provides an electrochemical sensor comprising at least two electrochemically active electrodes, a non-aqueous electrolyte system and a diffusion barrier membrane...
5942103 Renewable-reagent electrochemical sensor  
A new electrochemical probe(s) design allowing for continuous (renewable) reagent delivery. The probe comprises an integrated membrane-sampling/electrochemical sensor that prevents interferences...
RE36268 Method and apparatus for amperometric diagnostic analysis  
The present invention relates to a novel method and apparatus for the amperometric determination of an analyte, and in particular, to an apparatus for amperometric analysis utilizing a novel...
5932175 Sensor apparatus for use in measuring a parameter of a fluid sample  
An improved sensor apparatus of a kind that positions a semi-permeable membrane adjacent to an electrode assembly, for measuring a predetermined parameter, e.g., glucose concentration, of an...
5932079 Electrochemical multigas sensor  
An electrochemical measuring cell for the simultaneous detection of different gas components in a gas sample, with a plurality of measuring electrodes (4, 5, 6) behind a diffusion barrier (7),...
5922183 Metal oxide matrix biosensors  
A thin film matrix for biomolecules, suitable for forming electrochemical and biosensors comprising a general class of materials known as hydrous metal oxides which are also conductive or...
5916425 Electronic wiring substrate with subminiature thru-holes  
The present invention is an electronic wiring substrate for sensors formed over a subminiature through hole. Because of the small diameter of the through hole, the material that fills the through...
5908546 Detection of hydrogen chloride  
The present invention provides an electrochemical sensor for the detection of hydrogen chloride. In general, the electrochemical sensor comprises a housing having disposed therein a working...
5909114 Coulometric analysis method and a device therefor  
The present invention provides a rapid coulometric analysis for the quantitative determination of a sample substance with high reproducibility without any application of voltage etc. from the...
5906718 Electrochemical gas sensor for the detection of nitrogen dioxide  
The present invention provides an electrochemical gas sensor for the detection of nitrogen dioxide comprising a housing and a working electrode and a counter electrode disposed within the housing....
5906719 Sensor device  
An amperometric sensor device comprising a working electrode, a reference/pseudo-reference electrode and a permselective membrane incorporating a charged organic species. The electrodes are in...
5906726 Electrochemical sensor approximating dose-response behavior and method of use thereof  
The present invention provides an electrochemical sensor for the detection of an analyte, wherein the output or response of the electrochemical sensor approximates the dose-response behavior of a...
5904833 Method and apparatus for measuring the content of dissolved carbon dioxide in an aqueous medium  
A method and apparatus for measuring the content of carbon dioxide in an aqueous medium, particularly boiler condensate from an electrical power plant. The apparatus comprises a container or...
5902467 Oxygen sensor based on a metal-air battery  
An oxygen sensor based on a metal-air cell, typically a commercially available zinc-air battery of the type used in hearing aids. The cell, which admits oxygen to generate electric current at its...
5900128 Electrochemical sensor  
An electrochemical sensor is provided on a substrate whereby a precious metal layer is arranged in an inner region under an electrolyte layer that is surrounded by a polyimide structure. A...
5879878 Method of producing a first layer electrode membrane for a biosensor  
Electrode membrane combinations for use in biosensors to detect analytes in a sample and methods for making and storing same are disclosed. In one aspect, a method is provided for producing a...
5879527 Filter for an electrochemical measuring cell  
A filter for an electrochemical measuring cell with a filter housing and a filter material contained therein is improved, with a simple design, such that interfering gas components cannot reach...