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7797825 Method of making an electrochemical sensor  
A process for the manufacture of small sensors with reproducible surfaces, including electrochemical sensors. One process includes forming channels in the surface of a substrate and disposing a...
7790006 Free chlorine sensor  
A free chlorine measurement system and sensor are provided. In accordance with one aspect of the invention, the sensor has a porous working electrode disposed in an electrolyte proximate a porous...
7790005 Electrode and method for making electrode  
Disclosed is a gas permeable electrode comprising an electrocatalyst which is permeable to a reactant or reaction product, the electrocatalyst comprising particulate boron-doped diamond. There is...
7758734 Methods and apparatus for the measurement of hydrogen sulphide and thiols in fluids  
An electrochemical sensor for measuring the amount of hydrogen sulphide or thiols in a fluid in a wellbore comprises a temperature- and pressure-resistant housing containing a flow path for the...
7727368 Lead free galvanic oxygen sensor  
A lead free, galvanic sensor. The sensor having a housing, a cathode, an anode, a diffusion barrier, contact wires and an electrolyte, the anode being made of a tin containing alloy. The sensor...
7719427 Wireless pH measurement system  
A wireless pH measurement system is disclosed, the wireless pH measurement system includes a portable module and a receiver end. The portable module comprises a signal detecting and processing...
7713574 Transcutaneous analyte sensor  
The present invention relates generally to systems and methods for measuring an analyte in a host. More particularly, the present invention relates to systems and methods for transcutaneous...
7704356 Gas sensor array with electrochemical gas generator  
A compact gas sensor array, to which a test gas can be admitted without the use of mechanical components and whose readiness for measurement is interrupted during the calibration only briefly. The...
7686931 Safety device for an insertion electrode device  
A insertion electrode device, which is configured for installing a sensor probe in a container for a measuring medium, includes a probe housing that can be attached to the container and has a...
7678251 System and method for detecting gas  
A system to detect a presence of a specific gas in a mixture of gaseous byproducts comprising moisture vapor is disclosed. The system includes an electrochemical cell, a transport to deliver the...
7651597 Electrochemical sensor  
A dual gas sensor is described, having first and second working electrodes separated by a gas impermeable portion. The electrodes are preferably located on a gas permeable polymer support, with...
7645367 Gas-measuring system with gas sensor and gas generator  
A gas-measuring system contains at least one gas sensor (1) and at least one gas generator (4). The gas sensor (1) has at least one measuring surface (3), at which a target gas concentration can...
7632228 Membrane for use with implantable devices  
The present invention provides a biointerface membrane for use with an implantable device that interferes with the formation of a barrier cell layer including; a first domain distal to the...
7615139 Electrochemical sensor  
An electrochemical sensor with at least one measuring electrode (3), at least one auxiliary electrode (7) and at least one reference electrode (5), wherein a protective electrode (6), which...
7540948 Blood urea nitrogen (BUN) sensor  
A BUN (blood urea nitrogen) sensor containing immobilized carbonic anhydrase and immobilized urease for the in vitro detection of urea nitrogen in blood and biological samples with improved...
7379765 Oxygen enhancing membrane systems for implantable devices  
The present invention relates generally to systems and methods for increasing oxygen availability to implantable devices. The preferred embodiments provide a membrane system configured to provide...
7326384 Method and apparatus for detecting physicochemical changes emitted by biological sample  
A device for detecting a physicochemical change in a biological sample comprising at least one measuring electrode provided by causing a conductive material to enter into a porous film, and a...
7316768 Gas sensor and method of manufacture  
A gas sensor comprises an electrically conductive housing including a shelf member and a chamber containing an electrolyte. A conductive cathode mounted on the shelf member has a plurality of...
7278210 Method for producing a 3-D microscope flow-through cell  
The invention relates to a method of producing a 3-D microscope flow-through cell, consisting of an upper and a lower substrate between which is located a flow channel, an electrode structure...
7208071 Amperometric sensor for low level dissolved oxygen with self-depleting sensor design  
A dissolved oxygen sensor having a cathode and anode immersed in an electrolyte is designed to provide a low background current in the sensor when a potential is applied to the cathode. The...
7189315 Ion sensor and clinical analyzer using the same  
An ion sensor has a flow path through which a sample flows. An ion-exchange membrane is in contact with the sample in the sample flow path. An internal solution is provided on one side of the...
7186355 Insulated nanoscopic pathways, compositions and devices of the same  
The present invention relates to compositions which provide an insulated nanoscopic pathway. The pathway comprises molecules, polymers or nanoscopic particles capable of conducting charge...
7110803 Device and method for determining analyte levels  
Devices and methods for determining analyte levels are described. The devices and methods allow for the implantation of analyte-monitoring devices, such as glucose monitoring devices, that result...
6955749 Sensor for measuring an ion concentration or gas concentration  
The invention relates to a sensor for measuring ion concentration or gas concentration, with a gas- or ion-sensitive layer (6) that has two sensitive partial areas (20 and 21), two conducting...
6934572 Implantable enzyme-based monitoring system having improved longevity due to improved exterior surfaces  
An implantable enzyme-based monitoring system suitable for long term in vivo use to measure the concentration of prescribed substances such as glucose is provided. In one embodiment, the...
6896781 Gas sensor with electrically conductive, hydrophobic membranes  
A highly accurate, long life, low cost gas sensor is disclosed, particularly useful for measuring carbon monoxide and other toxic gases in an environment. The gas sensor has a first, sensing...
6811037 Sensor and/or separating element and process for the production and use thereof  
The invention provides a mechanically stable substrate having at least one through-opening, a perforated membrane which is integral or fluid-tightly connected with the substrate and which extends...
6808619 Electrode system  
In an electrode system, particularly for electrochemical sensors, which comprises a working electrode, a counterelectrode and an electrolyte, the counterelectrode is constituted by a material...
6793786 Flow gap gas distribution adapter for an electrochemical gas sensor  
An adapter (1) and electrochemical gas sensor (2) is provided with an electrochemical gas sensor housing (14) accommodating an electrolyte (13), with at least one measuring electrode (12) arranged...
6780307 Ion selective electrodes for direct organic drug analysis in saliva, sweat, and surface wipes  
A hand-held portable drug monitoring system to detect and quantitate cocaine and other organic drugs in saliva, sweat, and surface wipes by using an ion selective electrode or an array of ion...
6761817 Smart determination of dissolved oxygen probe operating bias  
A method and system for determining dissolved oxygen is disclosed. One or more constant currents are driven through amperometric-type dissolved oxygen probes to develop reference electrode...
6752964 Polymer/plasticizer based sensors  
This invention relates to a novel class of vapor sensors with tunable properties. More particularly, this invention relates to vapor sensors modified by the addition of a compatible small molecule...
6751491 Analyte measuring biosensor chip using image scanning system  
An implantable chip biosensor for detecting an analyte in vivo in body fluids comprises an analyte-sensitive hydrogel slab chemically configured to vary its displacement volume according to...
6746583 Microchip-based carbon dioxide gas sensor  
There is provided a microchip-based differential-type carbon dioxide gas sensor for detecting dissolved carbon dioxide levels. It functions with at least one working electrode composed of an...
6723216 Method and apparatus for detection of a bubble in a liquid  
A method for detection of a bubble in a liquid which is placed in a measuring chamber and is in contact with a sensor for measuring the partial pressure of a particular gas in a liquid is...
6716327 Measuring arrangement for the determination of gas components in a gas mixtures  
A measuring arrangement for the analysis of gas components in gas mixtures, having at least one electrochemical solid electrolyte test cell with at least one cathode in a diffusion channel is...
6706160 Chemical sensor and use thereof  
A chemical sensor selectively detects an analyte in a solution. The sensor comprises a flow-through chamber, a selective membrane, a transducer, an inlet for a liquid flow containing a recognition...
6695958 Electrochemical sensor  
The invention relates to a sensor for detecting substance concentration or activity or for determining the presence of substances based on electrochemical reactions. The electrochemical sensor...
6695959 Electrochemical gas sensor with nonplanar diffusion membrane and electrode array  
An electrochemical gas sensor, which has a substantially more compact design and is manufactured with a considerably reduced manufacturing effort. A conical, calotte-shaped, hemispherical or...
6689272 Acetate detecting sensor  
An electrochemical sensor for detecting the presence and amount of acetate in cell culture and fermentation media. The electrochemical sensor has a pH electrode, an internal reference electrode, a...
6685808 Electrochemical gas sensor with folded membrane strip  
An electrochemical gas sensor is provided which can be assembled economically and in a few steps. The electrodes (1, 2, 3) with associated electric lines are applied in a planiform manner to a...
6666963 Oxygen sensor  
A compact, long-lived oxygen sensor having an aqueous electrolyte and three gas diffusion electrodes, a working electrode, a reference electrode and a counter electrode. A porous, hydrophobic...
6663756 Microchip-type oxygen gas sensor based on differential potentiometry  
Disclosed is a microchip-based differential-type potentiometric oxygen gas sensor, which comprises a working electrode and a reference electrode. The working electrode is composed of a...
6656335 Micro-fuel cell sensor apparatus  
An apparatus for measuring partial hydrogen pressure in a gas stream is described. The apparatus includes a housing with micro-fuel cell sensor disposed therein. The sensor includes a sensing...
6652722 Sensor for measuring the partial pressure of a gas of the type comprising an electrochemical cell and a gaseous diffusion barrier  
Sensor for measuring the partial pressure of a gas in a gaseous medium, includes an electrochemical cell and a diffusion barrier with a porous membrane situated above an orifice made in a...
6638407 Electrochemical gas sensor with gas communication means  
An electrochemical sensor having electrolyte, at least two electrodes and an electrolyte reservoir in a housing. The sensor has a hydrophobic gas communication means between said electrodes,...
6638716 Rapid amperometric verification of PCR amplification of DNA  
Rapid electrochemical verification of the amplification of DNA by a polymerase chain reaction in a small sample of the PCR product.
6635160 Gas sensor  
The invention relates to gas sensors, particularly electrochemical gas sensors. The reliability of such gas sensors has been ascertained by regular tests, which involve exposing a sensor to a gas...
6634213 Permeable protective coating for a single-chip hydrogen sensor  
A permeable protective coating for a single-ship hydrogen sensor. A hydrogen-permeable coating is applied to a semiconductor wafer containing hydrogen sensor dies, prior to dicing of the wafer....
6623619 Electrochemical sensor for determining analyte in the presence of interferent and method of using the sensor  
Electrochemical sensor for determining analyte in the presence of interferent, particularly carbon monoxide in the presence of hydrogen. An electrochemical cell is designed so that current flow...