Matches 151 - 200 out of 463 < 1 2 3 4 5 6 7 8 9 10 >
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5503744 Biological oscillating device  
A biological oscillating device comprises a lipid-impregnated membrane which is disposed in an electrolyte solution and in which is buried an ion channel having a selectivity opposite to that of...
5503728 Carbon sensor electrode and process for producing the same  
A carbon electrode is dipped in a solution containing a reactive substance, and the carbon electrode impregnated with the solution is covered with an insulating tubular member; or a solution...
5498323 Procedure and apparatus for the determination of concentration of ammonia, and a procedure for the manufacturing of a detector  
A procedure and an apparatus to determine the concentration of dissolved ammonia. A polypyrrole electrode (2), a reference electrode (1) and an auxiliary electrode (5) are placed in the liquid to...
5494640 Device for identifying at least one gaseous component in a gaseous or liquid sample  
A sensor device is disclosed for identification of a gaseous component in a gaseous or liquid sample. The sensor device comprises an optode membrane having sensitivity for the gaseous component to...
5492611 Miniaturized oxygen electrode  
A miniaturized oxygen electrode comprising: an electrically insulating substrate; an electrolyte-containing material disposed on the substrate to form an electrolyte solution when water is...
5478526 Nozzle-type analysis apparatus  
A nozzle-type analysis apparatus for sucking a sample solution in a sample vessel for analyzing the sample solution. A sample suction nozzle for sucking the sample solution stored in the sample...
5472590 Ion sensor  
An ion sensor having an ion selectivity, which comprises an internal electrode of metal/metal salt, composed of an electroconductive layer of at least one metal and a layer of an insoluble salt of...
5468374 Miniaturized sensor component for measuring concentrations of substances in liquids, and method of manufacturing such a component  
A miniaturized sensor component for measuring concentrations of substances in liquids comprises a support that contains cavities accommodating a membrane. The membrane is produced in situ by...
5445726 Process and device for prolonging the usage time and reducing the temperature dependence of ion-selective polymer membrane electrodes  
Device for prolonging the effective usage time (service life), arrangement and process for minimizing temperature effects in any ion-selective polymer membrane electrode measuring chain (ISPE...
5443701 Electrobiochemical analytical method and electrodes  
An analytical method for determining the presence or concentration of an analyte in a liquid medium is provided in which electrons are transferred from an electrode material of an electrode to the...
5443706 Biocatalyst-immobilized electrode and method for treatment of water by use of the electrode  
An electrode consists of a cathode matrix material and a biocatalyst immobilized on the matrix material. A water under treatment is treated by disposing the electrode as a cathode and an anode...
5441625 Electrode arrangement  
An electrode arrangement includes at least one potentiometric measuring electrode located in a sample channel, a reference electrode located in a branch line, and a suction pump downstream of the...
5431806 Oxygen electrode and temperature sensor  
A small oxygen electrode and a method of bonding a fluorine resin film are disclosed. This small oxygen electrode includes a flat electrode substrate having at least two electrodes (a working...
5425869 Polymeric film-based electrochemical sensor apparatus  
An apparatus for detecting a given compound or changes in the concentration of such compound from a baseline concentration by means of a solid phase, film electrolyte, and being operable in a...
5421983 Anion selective electrodes containing fumed silica  
This invention relates to enhanced selectivity anion membrane electrodes useful in determining the amount of an anion of interest in a biological sample. The enhanced selectivity anion membrane...
5421982 Electrically conductive polymer gel and the method for manufacturing the same and an organism-use electrode with the use thereof  
An electrically conductive polymer gel is composed of a crosslinked polyacrylamide polymer including an electrolytic salt, water and a polyhydric alcohol uniformly dissolved therein, wherein the...
5417835 Solid state ion sensor with polyimide membrane  
A polyimide matrix is employed to form a substance-sensitive membrane which is particularly suited for installation on a solid state sensor. Polyimide, dissolved in a solvent, such as...
5413685 Ion-selective electrode  
An ion-selective electrode comprises an ion-sensing membrane, an internal electrode adhered to the ion-sensing membrane, and a lead connected to said internal electrode. The internal electrode used...
5413690 Potentiometric biosensor and the method of its use  
A potentiometric biosensor, test strip, reagent and a potentiometric method for detection or measurement of an analyte from a fluid sample. The biosensor includes indicating and reference...
5407554 Electrochemical sensor with multiple zones on a disc and its application to the quantitative analysis of glucose  
An electrochemical sensor having multiple measuring zones (34) that are sequentially insulatable, disposed on the circumference of an insulating disc (1) and associated with each other by...
5401377 Ion-selective sensor with polymeric membrane having phospholipid dispersed therein  
An ion-selective electrode having an ion-selective membrane in direct contact with an electrical conductor is provided in which the membrane coats an uninsulated zone surrounded by insulation on...
5397451 Current-detecting type dry-operative ion-selective electrode  
A current-detecting type dry-operative ion-selective electrode having a working electrode and a counter electrode which are mounted on an insulating substrate, a first electrolyte layer containing...
5395504 Electrochemical measuring system with multizone sensors  
A small sensor for an electrochemical measuring system composed of a measuring apparatus (50) having an electronic circuit (60), a connecting device (64), a positioning and advancing device (56,...
5395505 Cation-selective polymeric electrodes  
A cation-sensitive electrode which comprises an internal reference electrode, an internal reference solution and a cation-responsive membrane, characterized in that the internal reference solution...
5393401 Method of manufacturing miniaturized components of chemical and biological detection sensors that employ ion-selective membranes, and supports for such components  
The invention relates to a process for producing miniaturized chemical and biological sensor elements with ion-selective membranes. To simplify production in the micro range, an aperture (5,6)...
5393615 Mediators suitable for the electrochemical regeneration of NADH, NADPH or analogs thereof  
Disclosed is the use of 9H-acridin-2-one and 11H-dibenz-[b,f][1,4]oxazepin-8-one compounds as mediators suitable for the electrochemical regeneration of the co-enzymes dihydronicotinamide adenine...
5391272 Electrochemical immunoassay methods  
An electro-immunosensor which can be used to determine the presence of a wide range of analytes in solution is described. Also described are methods of determining subnanogram levels of analytes in...
5387328 Bio-sensor using ion sensitive field effect transistor with platinum electrode  
A bio-sensor employs an ion senstive field effect transistor (ISFET) comping a source 1 and a drain 3 formed in a substrate, an ion sensitive gate 2 placed between the source 1 and drain 3, an ion...
5385659 Reference electrode  
A planar reference electrode for chemical sensors, which are able to be supplied with a measuring fluid and a calibrating fluid. The planar reference electrode has the following components: an...
5385708 Determination of ultra low levels of mercury  
A highly specific and sensitive electrode for the determination of ultra-low levels of mercury and an analytical system based on such electrode. The electrode is a glassy carbon electrode...
5384028 Biosensor with a data memory  
A biosensor is provided with a memory for storing data including a data and a time of fabricating the biosensor, a lot number of the biosensor, an effective period of the biosensor, the biosensor...
5380422 Micro-electrode and method for preparing it  
A working micro-electrode with a reference electrode prepared by coating a working micro-electrode with an insulating material except a working electrode portion, forming a silver layer on the...
5380423 Anion-selective membrane and a sensor provided therewith  
The invention relates to a membrane that is selective for anions, particularly phosphate, comprising an ionophore based on a uranyl complex with the annexed general formula, wherein A, B, C, D=R...
5378342 Neural modeling device  
A neural modeling device comprising an electrolyte, a lipid or lipid-impregnated membrane which is situated in the electrolyte and in which an ion pump and an ion channel are buried, and an...
5378344 Ion sensor  
Disclosed is an ion sensor with its electrode covered with a water-repelling organic chemically adsorbed film, which is formed with at least one hole permitting the passage of ions and preventing...
5376255 Gas sensor  
A planar gas sensor, in particular a pCO 2 or pO 2 sensor, has the following components: a pH sensor located on a flat substrate, or at least one noble metal electrode located on the substrate; a...
5358619 Oxygen electrode  
A small oxygen electrode and a method of bonding a fluorine resin film are disclosed. This small oxygen electrode includes a flat electrode substrate having at least two electrodes (a working...
5354449 pH electrode  
A pH electrode suitable for in vivo use is provided in a cannula 10, and comprises a reference electrode 14 consisting of a chloridized silver wire surrounded by a solid unbuffered internal...
5350701 Process for producing a surface gate of an integrated electro-chemical sensor, consisting of a field-effect transistor sensitive to alkaline-earth species and sensor obtained  
A process for producing a surface gate comprising a selective membrane for an integrated chemical sensor comprising a field effect transistor, and the integrated chemical sensor thus produced,...
5342490 Electrolytic detection of sulfur  
A macrocyclic compound coated electrode may be used advantageously to detect and measure the concentration of sulfide in aqueous samples. The electrode is substantially unaffected by other...
5338430 Nanostructured electrode membranes  
A nanostructured composite film comprising a plurality of nanostructured elements, wherein the nanostructured elements are either two-component sub-microscopic structures comprised of whiskers...
5336388 Analyte and pH measuring sensor assembly and method  
The sensor apparatus of the present invention includes on a nonconducting substrate electrically conductive pathways leading to at least two analyte electrodes and one reference electrode. The...
5334296 Peroxidase colloidal gold oxidase biosensors for mediatorless glucose determination  
Horseradish peroxidase (HRP) immobilized on colloidal gold and then deposited on an electrode surface can be reduced at a convenient rate at low voltage (Ag/AgCl) without an electron transfer...
5326449 Composite membrane  
A sensor device for measuring the concentration of an analyte in solution is described. The device includes a composite membrane which incorporates a porous membrane containing an immobilized...
5324414 Ion selective electrode  
A method is disclosed for producing Ag/Ni composite ion selective electrode on polymer substrates. By utilizing a nitrogen glow discharge pretreatment of the polymer substrate, silver may be...
5322602 Gas sensors  
An improved perfluorinated, ion-exchange polymer, either in the form of a membrane or a thin film useful as the electrolyte in chemical sensors. The polymer is treated with an acid, such as boric...
5320725 Electrode and method for the detection of hydrogen peroxide  
An amperometric biosensor and method for the detection of hydrogen peroxide, NADH, or NADPH with high sensitivity includes an electrode having on its testing surface a three-dimensional redox...
5316648 Electrochemical measuring cell for detecting gases and vapors  
An electrochemical measuring cell has a three-electrode system including electrode, counter electrode and reference electrode in an electrolyte. The measuring cell has an additive promoting the...
5312537 Electrochemical cell, reference electrode and electrochemical method  
The concentration of an ionic species (e.g. K + ) is determined using an ion sensitive electrode having an appropriate membrane (e.g. valinomycin in plasticised PVC). In place of a conventional...
5310469 Biosensor with a membrane containing biologically active material  
A sensor for measuring the concentration of an analyte in a solution is disclosed. The sensor may be adapted for use as either an amperometric or a potentiometric sensor. It includes a membrane...
Matches 151 - 200 out of 463 < 1 2 3 4 5 6 7 8 9 10 >