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8182663 |
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...
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8152991 |
Ammonia nanosensors, and environmental control system
Embodiments of nanoelectronic sensors are described, including sensors for detecting analytes such ammonia. An environmental control system employing nanoelectronic sensors is described. A...
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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...
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7288299 |
Fullerenes to increase radiation resistance in polymer-based pellicles
A pellicle made of a polymer material contains fullerenes within the polymer material to reduce the damaging effects of radiation that is transmitted through the pellicle during an exposure...
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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...
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7146203 |
Implantable biosensor and methods of use thereof
Provided herein is a stabilized oxygen transport matrix that includes a reversible oxygen binding protein, such as hemoglobin, immobilized throughout the stabilized oxygen transport matrix. The...
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6844098 |
Oxide-ion conductor and use thereof
An oxide-ion conductor has the formula Ln1−xAxGa1−y−xB1YB2z oxide, wherein Ln is at least one element selected from the group consisting of La, Ce, Pr, Nd and Sm; A is at least one element selec...
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6837987 |
Carbon monoxide sensor
A method and apparatus for detecting the presence of carbon monoxide in a gas which may also contain contaminating substances uses a pre-treatment means to absorb contaminating substances and to...
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6758962 |
Oxygen sensing
Oxygen concentration measurement is carried out over a broad range by an instrument utilizing a zinc-air cell having a lower-than-nominal potential difference imposed across its electrodes by a...
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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...
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6344133 |
Process for operating an electrochemical measuring cell
A process for operating an electrochemical measuring cell (1) is described, with which it is possible to carry out gas concentration measurements already shortly after switching on the measuring...
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6171238 |
Portable hand-held device with a biosensor
The invention pertains to a portable hand device with biosensor for the investigation of biological fluids such as whole blood, liquor, urine and serum. It is characterized by a securely fixed...
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6165347 |
Method of identifying a gas
A method and apparatus for identifying an unknown reactive gas in a carrier gas, utilizing a sensor with a diffusion limited inlet. After a signal is established for the carrier gas, a flow of the...
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6146510 |
Sensor cartridge for a fluid analyte analyzer
The present invention is a sensor formed over a subminiature through hole. Because of the small diameter of the through hole, the material that fills the through hole and the through hole itself...
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6123828 |
Method and apparatus for measuring ethanol vapor concentration
A method and apparatus for measuring ethanol vapor concentration wherein a cell output is plotted with respect to time. The gradient of the steady rate portion of the plot is determined and an...
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5985129 |
Method for increasing the service life of an implantable sensor
Methods are described for extending the service life of implantable sensors having a silver-containing anodic reference electrode maintained at a high impedance, at least one noble metal cathodic...
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5958200 |
Electrochemical gas sensor
The present invention pertains to an electrochemical gas sensor, which has an electrode system for the measurement and is directly coupled with the environment via a gas inlet. To avoid fault...
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5942102 |
Electrochemical method
A method for determining the concentration of a reduced or oxidized form of a redox species in an electrochemical cell (FIG. 10) of the kind comprising a working electrode (2) and a counter...
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RE36268 |
Method and apparatus for amperometric diagnostic analysis
The present invention relates to a novel method and apparatus for the amperometric determination of an analyte, and in particular, to an apparatus for amperometric analysis utilizing a novel...
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5921922 |
Measuring of bloodgases
A method and an equipment for determining components, particularly pH, pO2 and pCO2 in blood. In order to facilitate the determination of blood gases, one sensor is used for measurement of more...
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5906719 |
Sensor device
An amperometric sensor device comprising a working electrode, a reference/pseudo-reference electrode and a permselective membrane incorporating a charged organic species. The electrodes are in...
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5906726 |
Electrochemical sensor approximating dose-response behavior and method of use thereof
The present invention provides an electrochemical sensor for the detection of an analyte, wherein the output or response of the electrochemical sensor approximates the dose-response behavior of a...
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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...
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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...
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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...
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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...
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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...
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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...
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5644116 |
Carbon monoxide sensor and method of detecting carbon monoxide
A carbon monoxide sensor in the form of a composite material including a transparent substrate, and a metal oxide layer provided over a surface of the substrate and containing nickel oxide and...
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5632882 |
Electrolytes for inhibiting silver deposition on oxygen sensor cathodes and methods of use of same
A Clark-type gas detection apparatus includes a sensor electrode and a reference electrode exposed to an aqueous electrolyte solution which is isolated from a liquid medium surrounding the...
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5626740 |
Method of and apparatus for measuring electrolyte
When determining an activity of particular predetermined ions in a sample liquid by use of a device for measuring ionic activity including a pair of ion-selective electrodes which are selectively...
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5624546 |
Method and apparatus for the detection of toxic gases
A compact electrochemical cell utilized for the detection of numerous toxic gases. The cell includes working and counter electrodes, surrounded by a liquid electrolyte, all of which is enclosed...
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5614416 |
Methods and apparatus for rapid equilibration of dissolved gas composition
Disclosed is an apparatus and method of equilibrating the dissolved gas composition of an aqueous fluid to reflect the predetermined gas composition contained in a gas equilibration reservoir. The...
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5611909 |
Method for detecting source of error in an amperometric measuring cell
The invention is directed to a method for detecting error sources in an amperometric measuring cell 1 which includes at least a measuring electrode 2 and a counter electrode 3 within an electrolyte...
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5611908 |
Method of operating and amperometric measuring cell
The invention relates to a method for operating an amperometric measuring cell which includes at least a measuring electrode 2 and a counter electrode 3 in an electrolyte chamber 4 filled with an...
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5607573 |
Method for detecting fugitive emissions
A novel, inexpensive sensor (10) for detecting volatile hydrocarbons and other solvent vapors detects leaks in the fittings and valves of petroleum refineries and chemical manufacturing and...
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5603820 |
Nitric oxide sensor
An electrode sensor which may be used to specifically and quantitatively measure nitric oxide is provided, as well as a method of preparing and using such an electrode sensor to measure nitric...
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5595646 |
Extended use planar sensors
A planar, solid-state electrochemical oxygen sensor having a substrate, conductive strips deposited on the substrate, and a dielectric layer insulating portions of the conductive strips except...
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5580440 |
Air fuel ratio sensory
A method and apparatus are disclosed for measuring atmospheric pressure in conjunction with an air-fuel ratio sensor of the type comprising a concentration cell with atmospheric air and exhaust...
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5560810 |
Electrochemical gas sensor assembly
An electrochemical gas sensor assembly comprises an electrochemical gas sensor for sensing a selected gas. A filter is provided through which gas to be sensed must pass before reaching the sensor,...
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5556534 |
Electrochemical oxygen and PH sensors employing fluoride based solid-state electrolytes
Electrochemical sensors and methods for their use are provided for the detection of the pH and/or oxygen concentration in an aqueous medium. The subject sensors comprise a closed-end cylinder...
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5554272 |
Planar bicarbonate sensor
A planar bicarbonate sensor has been discovered that has a dried residue internal electrolyte layer comprising a bicarbonate source and a halide salt of potassium, lithium, or sodium. The...
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5538620 |
Electrochemical sensor with which to measure gas concentrations
The invention concerns a novel electrochemical sensor with which to measure gas concentrations and comprising a measuring electrode and an associated electrode containing a carbonaceous material...
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5531870 |
Potentiometric ion determinations using enhanced selectivity asymmetric ion-selective membranes
This invention relates to a process for performing enhanced selectivity potentiometric ion determinations using an asymmetric ion membrane electrode having an asymmetric membrane with a hydrophilic...
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5518590 |
Electrochemical sensors for motor oils and other lubricants
A sensitive and rapid electrochemical sensor monitors motor oil deterioration, particularly antioxidation property, by determining the antioxidant and antiwear agent level remaining in an oil...
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5514253 |
Method of measuring gas concentrations and microfabricated sensing device for practicing same
A microfabricated sensing device is disclosed, including methods for using the same for the measurement of the concentration of a gas in a sample. Unique sensor configurations are described which...
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5514968 |
Method for detecting the need for calibrating probes
An in situ probe failure detection method for probes which deliver an electric signal on account of a change of the concentration of a substance to be measured. An example of such a probe failure...
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5478460 |
Electrolyte composition for screen printing and miniaturized oxygen electrode and production process thereof
An electrolyte composition for screen printing, comprising: an organic solvent; an inorganic salt in the form of a fine powder able to pass through a screen printing mesh, the salt powder being...
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5439569 |
Concentration measurement and control of hydrogen peroxide and acid/base component in a semiconductor bath
A feedback control system for providing automated control of multi-component chemical concentrations in a hydrogen peroxide/ammonia (SC-1) aqueous bath or in a hydrogen peroxide/hydrochloric (SC-2)...
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5429726 |
Methods for reducing level of interferants in biosensor systems and solutions used in these methods
Improved methods and compositions are provided to inhibit interference from formaldehyde in polarographic analytic methods. In the enzymatic oxidation of methanol to hydrogen peroxide and...
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