Match Document Document Title
5190728 Apparatus for monitoring fouling in commercial waters  
A fouling monitor and method for sensing fouling in commercial waters and for differentiating between microbiological fouling and chemical fouling, which includes a dissolved oxygen probe disposed...
5186808 Film-coated sensor  
A film-coated sensor is formed by providing an electrically conductive substrate (2), which has a sectional area of less than 10-5 cm2, connected to a lead wire (5) at one end of an insulative...
5183549 Multi-analyte sensing electrolytic cell  
An electrolytic sensor is set forth for measuring the amounts of an ionic and of a vaporous species in a liquid. The system has an electrode sensitive to an ionic species and another electrode...
5183550 Measuring cell for electrochemically detecting a gas  
The invention is directed to a measuring cell for electrochemically detecting a gas sample and has at least one measuring electrode and one counter electrode disposed in a housing defining a...
5173165 Enzyme electrode and the use thereof  
The invention relates to an enzyme electrode having a bienzyme system containing fungal peroxidase or horseradish peroxidase and one or more oxidases, and to the use of the electrode.
5165407 Implantable glucose sensor  
Implantable enzymatic sensors (25, 43, 44) for biochemicals such as glucose are provided having an ideal size and geometry for optional long term implantation and linear responses over the...
5162077 Device for in situ cleaning a fouled sensor membrane of deposits  
A device for in situ cleaning a fouled membrane of a sensor disposed in an aqueous process solution includes a first electrolysis electrode disposed in the process solution immediately adjacent...
5152287 Cross-linked fluorinated polymers for use in gas sensors  
A chemical sensor matrix is provided for use in medical, biological and industrial applications. The gas sensor includes a cross-linked fluoropolymer matrix of a composite having a gas-sensitive...
5132345 Ion-selective electrodes  
An ion-selective polymeric membrane for an electrochemical sensor for use in analytical chemistry, comprising a) a supporting matrix e.g. of PVC, and b) an ionophore selected from calixarene or...
5131999 Voltammetric detector for flow analysis  
One of the fundamental limitations of voltammetric detectors in flow analysis is the problem of passivation or contamination of the working electrode. The present invention proposes a voltammetric...
5130009 Sensor device  
In order to produce a small-volume flow measuring cell with good flow characteristics in a sensor device for determining the concentration of a substrate in a sample medium, comprising an enzyme...
5128018 Electrochemical measuring cell for detecting gas components in a fluid medium  
The invention relates to an electrochemical measuring cell for detecting selected gaseous components such as hydride gases, sulfur dioxide and nitrogen dioxide by means of at least one measuring...
5120420 Biosensor and a process for preparation thereof  
A biosensor of the invention comprises an insulating base board (1) having formed thereon, in sequence, leads (2, 3, 3'), an electrode system mainly made of carbon (4, 5, 5'), an insulating layer...
5118404 Enzyme electrode and a method of determining concentration of an analyte in a sample solution  
An enzyme electrode usable for determining high concentration of analyte in a sample solution is provided, by providing an enzyme-immobilized membrane in the electrode with pH buffer capacity....
5102526 Solid state ion sensor with silicon membrane  
A silicone matrix is employed to form a substance-sensitive membrane which is particularly suited for installation on a solid state sensor. The ionophore may be a potassium ionophore, an ammonium...
5103179 Water analyzer with multiple electrodes  
A water analyzer having several electrodes of the type which normally interfere with one another. These electrodes include a first electrode which is an active measurement electrode which perturbs...
5102525 Planar oxygen sensor  
A planar oxygen sensor has an insulating substrate, a cathode formed on the insulating substrate generally at the center thereof; another electrode formed on the insulating substrate in a region...
5098545 Precalibrated, disposable electrochemical sensing device  
Precalibrated, disposable electrochemical sensing devices can be constructed so as to utilize a housing shaped so as to internally include at least two separate half cells, one of which is capable...
5098547 Dissolved oxygen sensor calibration, monitoring and reporting system  
A dissolved oxygen measurement system includes real time monitoring and calibrating of a dissolved oxygen sensor. The sensor includes a pair of measuring electrodes, an electrolyte, and a pair of...
5092980 Measuring apparatus for detecting gases  
The invention is directed to a measuring apparatus for detecting gases with the aid of an electrochemical sensor with a diffusion barrier being disposed ahead of the sensor. The measuring...
5085759 Apparatus for rapid biological oxidation demand of liquids  
An apparatus is provided for rapidly determining the biochemical oxidation demand (BOD) of a liquid at an on-site location. The apparatus includes a cell body member having a vertically extensive...
5074988 Apparatus for monitoring an electrolyte  
An electrode, preferably of a conductive polymer, has on its surface, preferably over all of its surface, an ion exchange material, preferably of significant thickness. Such a coated electrode may...
5071526 Acidic gas sensors and method of using same  
The present invention provides a sensor, preferably an electrochemical sensor, for detecting acidic gases, e.g. carbon dioxide. The electrochemical sensor has a sensing electrode (20, 22), a...
5064516 Measuring gas levels  
A method for measuring the amount of an electroactive gas in a gaseous mixture using an electrochemical cell, the cell including a working electrode (anode), counter electrode (cathode), an...
5063081 Method of manufacturing a plurality of uniform microfabricated sensing devices having an immobilized ligand receptor  
A plurality of uniform microfabricated sensing devices are produced by establishing a plurality of base sensors on a substrate wafer, forming over at least a portion of each base sensor a...
5045163 Electrochemical method for measuring chemical species employing ion exchange material  
An electrode, preferably of a conductive polymer, has on its surface, preferably over all of its surface, an ion exchange material, preferably of significant thickness. Such a coated electrode may...
5041204 Electrochemical measuring cell for detecting hydrogen cyanide or sulfur dioxide  
The invention is directed to an electrochemical measuring cell for detecting hydrogen cyanide or sulfur dioxide by means of at least one measuring electrode and a counter electrode disposed in an...
5035791 Ion sensor containing a selective organic membrane  
An ion sensor is disclosed, together with the relevant process for preparing it, which contains a polymeric organic matrix, a ionophore, a device based on semiconductors of EMOS or ISFET (CHEMFET)...
5030336 Polarographic oxygen sensor  
The cathode sub-assembly of a polarographic sensor comprises an elongate housing with a longitudinal opening therethrough and with noble metal wires extending completely through the opening, the...
5030310 Electrode for electrochemical sensors  
A disposable, inexpensive electrode for an electrochemical sensor includes a laminated anode and a laminated cathode. The anode is a film substrate with anodic material such as platinum deposited...
5007424 Polarographic/amperometric measuring sensor  
This invention provides a polarographic/amperometric measuring sensor, particularly useful for transcutaneous determination of the oxygen partial pressure (tcpO2) in the blood by means of a...
5007996 Detection system  
A detection system for the detection of e.g. chlorine in a gas stream comprises an elongate support (14) which has electrolyte distributed along its length and is provided with a pair of...
5004532 Amperometric cell  
A membrane-enclosed amperometric cell (MEAC) for use in determining the concentration of an electroactive species of interest (EASI) in an ambient medium comprises: a working electrode defined by...
4997541 Dosimeter having a reusable electrochemical measuring cell  
The invention is directed to a dosimeter for detecting gaseous substances or substances dissolved in liquids. The dosimeter includes a detection chamber which is partitioned off with respect to...
4995391 Electrode device  
An electrode device for the determination of the partial pressure of CO2, Pco2, in particular an electrode device for transcutaneous determination of Pco2.The interior electrolyte of the electrode...
4994167 Biological fluid measuring device  
A biological fluid measuring device for determining the presence and the amounts of substances in a biological fluid without the need for dilution of the fluid comprises a main housing including...
4988429 Measuring cell for an electrochemical gas sensor  
The invention is directed to a measuring cell for an electrochemical gas sensor having an electrolytic chamber and a measuring electrode as well as a counter electrode. In the direction facing the...
4986271 Vivo refillable glucose sensor  
An arrangement for prolonging the useful life of an electrochemical refillable implantable glucose sensor employing an enzyme material such as glucose oxidase immobilized on bulk particulate...
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...
4985130 Amperometric method and apparatus  
A method for determination of a first electroactive and normally gaseous species (EAGS) and a second EAGS in a fluid medium containing both EAGS; the medium is contacted with a first working...
4975175 Miniaturized oxygen electrode and miniaturized biosensor and production process thereof  
Miniaturized Clark-type oxygen electrodes includes a substrate having at least one recess groove formed on a surface thereof for receiving an electrolyte solution, and two electrodes acting as a...
4966671 Method and apparatus for electrochemical analysis  
A potentiometric electrochemical analysis method, which comprises placing by capillary action an aqueous sample liquid to be tested for the presence of a quantity of an analyte in the sample...
4961833 Field-effect transistor-type semiconductor sensor  
A field-effect transistor-type semiconductor sensor is provided which comprises first and second semiconductor substrates bonded strongly to each other interposing a silicon oxide film...
4961834 Electrochemical measuring cell for amperometrically determining ammonia and derivatives thereof  
The invention is directed to an electrochemical measuring cell for determining ammonia and its derivatives in a gaseous or liquid measuring sample. The measuring cell has at least one anode and at...
4957615 Oxygen sensor  
An oxygen sensor includes an electrically conductive substrate directly coated with an electrolytic oxidative polymeric membrane, which contains a porphyrin compound and a metal complex thereof....
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...
4948490 Tetraalkylammonium ion solid electrolytes  
Electrochemically stable, non-hygroscopic ionically conducting solid electrolyte films for use in environmental sensors feature an amount of tetraalkylammonium salt in one or more aprotic solvents...
4948496 Gas sensor  
An electrochemical gas sensor having a flexible membrane mounted at the sensing end of a housing, to dissipate increased electrolyte pressure, a small sensing electrode cooperating with a...
4943364 Fiber optic CO2 sensor  
A fiber-optic probe for measuring the partial pressure of CO2 in a medium includes a single optical fiber having a distal end; a mirror; a hydrolyzed dye/gel polymer, the dye being in contact with...