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5865972 Integrated electrochemical microsensors and microsystems for direct reliable chemical analysis of compounds in complex aqueous solutions  
A microsensor for electrochemical measurements allowing the determination of concentration or concentration profile of at least one chemical compound with small size or molecular weight, under...
5865973 Electrochemical measuring cell  
The invention is directed to an electrochemical measuring cell to detect different gas components. The measuring cell includes several measuring electrodes (12, 15, 18) and a counter electrode 30...
5863972 Randomly segmented thermoplastic polyurethanes as matrix for electrochemical analysis of Ca++ ions  
Composition, comprising in homogeneous distribution A) at least one salt containing a lipophilic anion, B) a plasticiser-free thermoplastic randomly segmented polyurethane which is soluble in...
5858452 Method for fabricating 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...
5855750 Electrochemical measuring cell for detecting oxidizing gases  
An electrochemical measuring cell for detecting oxidizing gases, containing an electrode with a redox mediator, which is oxidized by the gas to be detected. A measuring electrode is employed made...
5849174 Electrodes and their use in analysis  
A method for indicating the concentration of a substance in solution includes passing an alternating voltage between a first electrode structure having coated thereon a polymer and a second...
5842983 Biosensor  
Biosensor for amperometric measurements wherein the measuring electrode (34) is made of an electrically conductive carrier made of carbon which is saturated with a platinum metal in colloidal form...
5837112 Electrochemical measuring cell for detecting phosgene  
An electrochemical measuring cell for detecting phosgene, with at least one measuring electrode made of silver and with a counterelectrode in an electrolyte, which contains an organic solvent and...
5837454 Process for the manufacture of wholly microfabricated biosensors  
An efficient method for the microfabrication of electronic devices which have been adapted for the analyses of biologically significant analyte species is described. The techniques of the present...
5833825 Silver/silver chloride reference electrodes having self-contained chloride solution and methods of making same  
A Ag/AgCl electrode includes a rigid tube within which a Ag/AgCl conductor is mounted by epoxy. An insulated wire lead is coupled by a solder joint to the Ag/AgCl conductor. An optional plastic...
5830337 Electrochemical gas sensor  
An electrochemical gas sensor comprising a sensing electrode, a counter electrode, an electrolyte reservoir, an upwardly extending projection disposed within the reservoir that supports the...
5814205 Detection of lead in blood  
A device (10) is disclosed for measuring the concentration of metal ions in solution, particularly lead in blood. The device comprises a mercury free electrode (16), which is separated from the...
5804401 Device for detecting oxygen with oxidase  
A method and device (10) for removing oxygen using a reduced oxidase enzyme and for providing a calorimetrically detectable signal of the presence of the oxygen. A reduced laccase or ascorbate...
5798030 Biosensor membranes  
The present invention relates to a novel biosensor comprising an electrode membrane combination. This novel biosensor employs compounds include a linker lipid for use in attaching a membrane...
5798940 In situ oxidation reduction potential measurement of soils and ground water  
A ground penetrometer for determining pH and oxidation reduction potential (ORP) of soils. The penetrometer includes an ORP electrode, a pH electrode, reference electrodes, and a temperature...
5795774 Biosensor  
A drop in measurement accuracy of biosensors, due to interferents in a measurement sample is avoided by an arrangement wherein: a hydrogen peroxide electrode 2 is formed on an insulated base 1,...
5791344 Patient monitoring system  
A patient monitoring system measures the concentration of a particular substance in a patient's tissue, blood, or other bodily fluids, provides an indication of the rate of change of such...
5788832 Temperature compensated electrochemical gas sensor and method for closely tracking the temperature variations of a gas to be sensed  
An electrochemical gas sensor having a temperature sensitive element such as a thermistor arranged within the gas sensor in a temperature insulative fashion for preventing any variations in the...
5783056 Electrochemical enzyme biosensor  
In the case of the electrochemical enzyme biosensor comprising noble metal electrodes, an electrochemical oxidation of pyridine nucleotides takes place, in particular of NADH. The noble metal...
5770453 Sensors for neutral molecules  
A method for the detection of chemical agent present in a material comprising exposing a calixarene, having redox active substituents on its para rim, to a solution or suspension derived by...
5770028 Glucose and lactate sensors  
A solid state, multi-use electrochemical sensor having an electrically nonconductive substrate, a working electrode, and a semi-permeable membrane covering the working electrode. The working...
5766839 Processes for preparing barrier layer films for use in enzyme electrodes and films made thereby  
Methods for forming thin layer barrier layer films for use in enzyme containing laminated membranes and membranes formed thereby are disclosed. The barrier layers exhibit improved acetaminophen...
5756355 Lipid membrane sensors  
A bilayer lipid membrane (BLM) sensor comprising (1) a gold recording surface, (2) a first lipid layer which is an imperfect layer of a thiolipid which comprises the residue of two phospholipid...
5746898 Electrochemical-enzymatic sensor  
An electrochemical-enzymatic sensor for the determination of substances, in particular glucose, in body fluids, which possesses a good long-term stability, includes: a sensor electrode of...
5746900 Non-aqueous amperometric multi-gas sensor  
A versatile, selective and sensitive non-aqueous electrochemical amperometric gas sensing devices of great sensitivity are disclosed which operate in a redox voltage range from about -3 to about...
5746899 Electrochemical gas sensor  
An electrochemical gas sensor comprises sensing and counter electrodes mounted on the same side of a planar support. An electrolyte is in contact with the sensing and counter electrodes. A...
5741413 Gas sensors and method of using same  
A method of calibrating and using a device for the determination of the concentration of an active gas in a mixture of gases wherein the device incorporates a gas sensor (4) and has gas diffusion...
5733506 Gas sensors and compounds suitable therefor  
A gas sensor has a gas sensing component which permits measurement of a change in optical absorption and, optionally also a change in electrical conductivity on exposure to an environment...
5728290 Polarographic sensor and method of using same  
A polarographic sensor device to determine the partial pressure of a gas in a sample medium is disclosed. The device comprises a) a substantially hydroscopic electrolyte composition joining a pair...
5728289 Sensor cell holder for gas analyzer  
A cell block for housing a sensor cell within a gas analyzer is mounted on the front panel of the analyzer, holding the sensor within a horizontal plane. The cell block is made of inexpensive and...
5725747 Electrochemical measurement cell  
It is an of this invention to provide an electrochemical measurement cell capable of measuring the concentration of gaseous and charged or neutral compounds in a liquid. Accordingly, the present...
5723036 Electrochemical measuring cell  
The invention is directed to an electrochemical measuring cell 1 for detecting different gas components. The electrochemical measuring cell includes several measuring electrodes (8, 12, 13), a...
5720870 Determining gas concentration  
Method and device for determining the concentration of one or more gases, e.g. O2 or CO2 or an anaesthetic gas, in a fluid e.g. a body fluid or a gas mixture. A membrane (12) permeable to the...
5720862 Sensor and production method of and measurement method using the same  
There is provided a sensor for the measurement of a content of a material in liquid which material is oxidized with an oxidase enzyme in which sensor a reagent layer is formed on an electrode...
5711868 Electrochemical sensors membrane  
A solid state, multi-use electrochemical sensor having an electrically nonconductive substrate, a working electrode, and a semi-permeable membrane covering the working electrode. The working...
5708247 Disposable glucose test strips, and methods and compositions for making same  
An improved disposable glucose test strip for use in a test meter of the type which receives a disposable test strip and a sample of blood from a patient and performs an electrochemical analysis...
5707502 Sensors for measuring analyte concentrations and methods of making same  
A sensor for measuring a concentration of an analyte in a solution. The sensor comprises a substrate layer, an electrode layer and an immobilized enzyme layer. The sensor further includes an...
5704354 Electrocatalytic glucose sensor  
An electrocatalytic sensor in catheter type of construction for determining glucose in body fluids, especially in the blood, having the following features: a tubular body made of bio-compatible...
5705045 Multi-biosensor for GPT and got activity  
Multi-biosensor in which only one enzyme is used for handy and simultaneous measurement of GPT and GOT activities, and a method for fabricating the multi-biosensor, are disclosed, the biosensor...
5700360 Fluoroelastomer gasket for blood sensors  
An elastomer, especially a fluoropolymeric elastomer, meets requirements necessary for use as a gasket in contact with primary membranes of electrochemical sensors of both blood gas and ionic...
5698083 Chemiresistor urea sensor  
A sensor to detect and quantify urea in fluids resulting from hemodialysis procedures, and in blood and other body fluids. The sensor is based upon a chemiresistor, which consists of an...
5694932 Sensor array  
A sensor is used to detect a substance component in an aqueous solution. This sensor has electrically conducting and mutually insulated electrodes (7) which can be connected to a data-recording...
5695623 Glucose measuring device  
The device for measuring and displaying the concentration of glucose in the blood comprises a display device (2) into which disposable sensors (1) comprising a biomembrane (9) can be inserted. The...
5695624 Solid state oxygen sensor  
A potentiometric oxygen sensor is formed having a logarithmic response to a differential oxygen concentration while operating as a Nernstian-type sensor. Very thin films of mixed conducting oxide...
5686829 Voltammetric method and apparatus  
During voltammetric analysis of liquids, the indicator electrode must be frequently changed in order to prevent memory effects and resultant changes to basic conditions during measurement. In...
5683563 Enzyme electrode and method of manufacturing the same  
There is disclosed an enzyme electrode, comprising a polyion complex membrane of an immobilized enzyme, formed on an electrode base. According to the enzyme electrode, an enzyme substrate or the...
5672319 Device for analyzing a fluid medium  
A fully functional analyzing unit is included within the fluid tight housing of a dialyzer which is immersed in the medium to be analyzed. An opening in the housing is closed by a dialysis...
5672257 Electrochemical metal analysis  
Electrochemical heavy metal analysis includes a printed electrode having a layer of a mercury compound or salt supported thereon. The compound or salt is reduced to metallic mercury in use of the...
5672256 Multi-electrode biosensor and system and method for manufacturing same  
A multi-electrode biosensor for sensing a material present in a sample includes a substrate, a plurality of working electrodes formed on the substrate, a counter electrode formed on the substrate,...
5667653 Electrochemical sensor  
The present invention provides a low-cost alternative to currently available electrochemical sensors. In general, the present invention provides an electrochemical sensor for the detection of an...