Matches 251 - 300 out of 320 < 1 2 3 4 5 6 7 >


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4985125 Method for detecting meat freshness using a biosensor  
A biosensor comprising a main body and a built-in sensing electrode provided therein, wherein said sensing electrode is provided with a sensing part to which a buffer solution can be constantly...
4970145 Immobilized enzyme electrodes  
Enzyme electrodes are disclosed which are capable of responding amperometrically to the catalytic activity of the enzyme in the presence of its respective substrate and comprising the enzyme...
4968400 Enzyme sensor  
PCT Filed Nov. 19, 1987 PCT Pub. No. WO88/04050 PCT Pub. Date Jun. 2, 1988.An insulative substrate (1) is coated with an electrically conductive layer (2) and a redox layer (3) which comprises an...
4963815 Photoresponsive electrode for determination of redox potential  
Devices and methods are provided for determining the presence and amount of an analyte by measuring a redox potential-modulated photoinducing signal from a photoresponsive element. Further devices...
4953552 Blood glucose monitoring system  
A blood glucose monitoring system includes a generally planar disposable adhesive patch having a needle type glucose sensor and a second electrode mounted thereon, as well as first and second...
4950379 Polarographic cell  
A two electrode assembly in a polarographic cell includes a sensor electrode and a silver/silver chloride reference electrode in which silver metal is in contact with a substantial reservoir of...
4950378 Biosensor  
An electrode refreshing arrangement of a biosensor includes a constant reverse bias voltage arranged to be supplied between a working electrode and a reference electrode, so as to thereby refresh...
4935105 Methods of operating enzyme electrode sensors  
An analytical method using a sensor of the enzyme electrode type is provided for determining in a sample the concentration of an analyte reactive with an enzyme present on the sensor to produce an...
4933066 Apparatus for mounting a diffusion-limiting membrane for a sensor  
An apparatus for mounting a diffusion-limiting membrane for a sensor in which a mounting member for mounting a diffusion-limiting membrane holding plate is movable toward and away from an enzyme...
4927516 Enzyme sensor  
Disclosed is an enzyme sensor for measuring a predetermined substrate concentration by potentiometric or amperometric response on the basis of an enzyme. In one aspect, a solid-state enzyme sensor...
4923586 Enzyme electrode unit  
An enzyme electrode unit having, on the surfaces of the base electrodes thereof, an enzyme-immobilized membrane for oxidizing or reducing a target substance to be measured, and a...
4919141 Implantable electrochemical sensor  
The implantable electrochemical sensor for amperometric measurements in body liquids comprises at least one measurement electrode formed as a platinum wire, a reference electrode tubularly...
4919767 Sensor and method for analyte determination  
A sensor of the enzyme-electrode type comprising an electrode and a membrane permeable to liquids and solutes which is positioned between the electrode and a specimen containing the analyte to be...
4916075 Differential homogeneous immunosensor device  
There is provided a novel method of testing for the presence of an analyte in a fluid suspected of containing the same. In this method, in the presence of the analyte, a substance capable of...
4909908 Electrochemical cncentration detector method  
Electrochemical biosensor systems or apparatus, components thereof, and methods for quantitatively measuring or assaying concentrations of selective substrates or metabolites in aqueous media as a...
4909921 Electrochemical sensor facilitating repeated measurement  
An electrochemical sensor wherein a FET for measuring chemical substances and a reference electrode are covered with a continuous hydrous polymer on an insulating substrate, and on the hydrous...
4908115 Minute electrode for electrochemical analysis  
A minute electrode comprised of a bundle of carbon fibers covered with a nonconducting resin, and the ends of the carbon fibers recesses at one end of the resin, and has the micro-holes released...
4900423 Enzyme sensor using immobilized glucokinase  
An enzyme sensor comprising an enzyme acting specifically on a substrate and a transducer for converting the quantitative change of a substance or heat which is produced or consumed during an...
4897173 Biosensor and method for making the same  
This invention relates to a biosensor which comprises an insulative base, an electrode system formed on the substrate and primarily made of carbon, and a perforated body having an enzyme and an...
4894339 Immobilized enzyme membrane for a semiconductor sensor  
A membrane containing an immobilized enzyme for a semiconductor sensor is prepared containing a water soluble photosensitive resin including a high molecular weight polyvinyl pyrrolidone...
4890620 Two-dimensional diffusion glucose substrate sensing electrode  
Enzyme electrode assembly suitable for sensing physiologically important molecules such as glucose wherein the rate of accessibility of enzyme substrates to the enzyme is differentially regulated...
4891104 Enzymatic electrode and electrode module and method of use  
An improved enzymatic electrode and electrode module specifically adapted for use in a medical analyzer device is disclosed which permits rapid analysis of substances of interest contained within...
4874499 Electrochemical microsensors and method of making such sensors  
Electrochemical microsensors formed of a substrate containing means for sensing potential or current, including active and passive electronic devices and electronic circuits, and a micromachined...
4832797 Enzyme electrode and membrane  
A membrane particularly for use in a sensor of the enzyme-electrode type which comprises one or more layers of material and an enzyme-containing layer and in which one layer is formed from a...
4820399 Enzyme electrodes  
An enzyme electrode composed of a carrier, an enzyme immobilized on a parr of the surface of the carrier, a coating film consisting of a thin film coating the portion where the enzyme is...
4816131 pH/PCO2 PO2 electrode  
A double and triple barrel electrode for the simultaneous measurement of pH and PCO2 ; and pH, PCO2 and P02 employing a membrane in conjunction with a pH fluid and fluids responsive to CO2 and O2....
4795707 Electrochemical sensor having three layer membrane containing immobilized enzymes  
An electrochemical sensor is formed having a working electrode for detecting hydrogen peroxide surrounded by a cylinder portion, and with an enzymecontaining membrane at its tip. The membrane has...
4795542 Electrochemical concentration detector device  
Electrochemical biosensor systems or apparatus, components thereof, and methods for quantitatively measuring or assaying concentrations of selective substrates or metabolites in aqueous media as a...
4759828 Glucose electrode and method of determining glucose  
An electrode assembly for polarographic assay of glucose in solution having a laminated membrane, the outer membrane being from 1 to 20 μm thick and having a pore size of 10 to 125 Å, the inner...
4750496 Method and apparatus for measuring blood glucose concentration  
A non-invasive method for measuring blood glucose concentration using glucose present at the mucosal surface of a living being is provided. The method includes the steps of positioning a glucose...
4721677 Implantable gas-containing biosensor and method for measuring an analyte such as glucose  
The present invention relates to a novel implantable biosensor and method for sensing products, such as hydrogen peroxide, generated from an enzymatic reaction between an analyte, like glucose,...
4713165 Sensor having ion-selective electrodes  
A sensor and a method are disclosed for the potentiometric determination of the ion content or activity of a sample and the concentration of other components (e.g., glucose, urea, triglycerides,...
4711245 Sensor for components of a liquid mixture  
This invention relates to equipment and methods for detecting the presence of, measuring the amount of, and/or monitoring the level of, one or more selected components in a liquid mixture,...
4703756 Complete glucose monitoring system with an implantable, telemetered sensor module  
An electrochemical system includes a sensor module suitable for implantation in the body to monitor glucose and oxygen levels therein. The module has two oxygen sensors situated in an...
4671288 Electrochemical cell sensor for continuous short-term use in tissues and blood  
An electrochemical cell sensor for monitoring oxidizable enzyme substrates in biological fluids situated in a housing and suitable for implantation in the body, including at least one oxygen or...
4654197 Cuvette for sampling and analysis  
Disposable cuvette for essentially simultaneous sampling of a fluid and analyzing the sample. The new cuvette comprises a body member having at least one cavity defined by surrounding walls, into...
4650547 Method and membrane applicable to implantable sensor  
This invention relates to a novel membrane useful in an electro-chemical, optical or other sensor device and to a method employing the membrane for determining the concentration of large molecule...
4604182 Perfluorosulfonic acid polymer-coated indicator electrodes  
A method is described for the amperometric determination of the concentration in a biological sample of a constituent which is a substrate for an oxidase enzyme by (1) catalyzing the substrate...
4581336 Surface-modified electrodes  
Surface-modified electrodes which may be used in electrochemical cells for production of electrical energy comprise an enzyme immobilized on a support. The support consists of at least a monolayer...
4517291 Biological detection process using polymer-coated electrodes  
A method is described for the amperometric determination of the concentration in a biological sample of a constituent which is a substrate for an oxidase enzyme by (1) catalyzing the substrate...
4514276 Microelectronic sensor assembly  
A microelectronic semiconductor element 12 is mounted on to a header 13, and integrally combined with one or more metallic sensing electrodes 20, 21 by encapsulation in a chemically and...
4483924 System for controlling a printer in a blood sugar analyzer  
A blood sugar analyzer has a reaction cell which houses a fixed enzyme membrane and measuring electrode and which receives a blood specimen, to cause a chemical reaction between the specimen and...
4436812 Process of calibrating a blood sugar analyzing apparatus  
A process of calibrating a blood sugar analyzing apparatus, in which the blood sugar concentration in a blood specimen is measured with a fixed enzyme membrane sensor and corrected by calibration...
4431507 Enzyme electrode  
The disclosure is directed to an improved enzyme electrode which includes a first electrode having at least one kind of an enzyme immobilized on it for electrochemically detecting a substance to...
4420564 Blood sugar analyzer having fixed enzyme membrane sensor  
A blood sugar analyzing apparatus has a reaction cell which houses a fixed enzyme membrane sensor and a measuring electrode which receives a blood specimen which causes a chemical reaction between...
4419210 Polarographic electrode  
An improved 3-pole membrane electrode for polarographic measurements in which an auxiliary electrode is defined having an arc which is generated by rotation about the center point of a disc-shaped...
4418148 Multilayer enzyme electrode membrane  
A contiguous multilayer membrane for use with an electrochemical sensor is prepared comprising a first relatively nonporous dense polymer layer, a second polymer layer less dense and more porous...
4415666 Enzyme electrode membrane  
A membrane for electrochemical analysis is described comprising a first, relatively dense and thin layer and a second, relatively porous thick layer, which thick layer has dispersed therethrough...
4407959 Blood sugar analyzing apparatus  
A blood sugar analyzer system for measuring the blood sugar concentration level in a blood specimen is provided. A sensor having a fixed enzyme membrane and a measuring electrode generates a...
4388166 Electrochemical measuring apparatus provided with an enzyme electrode  
An electrochemical measuring apparatus which essemtially comprises an asymmetric semipermeable membrane mounted on an immobilized enzyme membrane of an enzyme electrode, said asymmetric...

Matches 251 - 300 out of 320 < 1 2 3 4 5 6 7 >