|
Match
|
Document |
Document Title |
|
|
7622304 |
Carbon dioxide sensor and method of determining partial pressure of carbon dioxide
A carbon dioxide sensor and a method of detecting carbon dioxide using the sensor are provided, the sensor includes a closed chamber having as a wall portion thereof a substantially watertight,...
|
|
|
7575933 |
Modification of selectivity for sensing for nanostructure device arrays
An electronic system for selectively detecting and identifying a plurality of chemical species, which comprises an array of nanostructure sensing devices, is disclosed. Within the array, there are...
|
|
|
7553458 |
Alcohol sensor using the work function measurement principle
An alcohol sensor having gas-sensitive layers made of polymers or inorganic oxides wherein a signal is read out by means of work function change which is produced in the form of a field-effect...
|
|
|
7521252 |
Methods for forming palladium alloy thin films and optical hydrogen sensors employing palladium alloy thin films
Methods for forming hydrogen sensing materials include forming a palladium alloy thin film having less than about 83 atomic percent of palladium, and annealing the palladium alloy thin film to...
|
|
|
7493795 |
Gas detection method and gas detection apparatus
The present invention provides a gas detection method and detection apparatus that provide better sensitivity and faster recovery after response than conventional gas detection methods and...
|
|
|
7459312 |
Photodesorption in carbon nanotubes
Carbon nanotube devices are manipulated in a manner that is useful for a variety of implementations. According to an example embodiment of the present invention, light ( 632 ) is used to...
|
|
|
7442555 |
Ammonia gas sensor method and device
A mixed potential sensor device and methods for measuring total ammonia (NH 3 ) concentration in a gas is provided. The gas is first partitioned into two streams directed into two sensing chambers....
|
|
|
7422723 |
Alcohol breath test device
A breath alcohol detection device includes a one-piece multi-passage block with attached sensors, a valve and a fuel cell. The cell accurately determines the BrAC of a prospective vehicle operator....
|
|
|
7393505 |
Proton conductor gas sensor
A proton conductor gas sensor whose durability at high temperature is enhanced by using gel not converted to sol even at high temperature in a water reservoir. Fine particles of silica are gelled...
|
|
|
7347974 |
Materials, method and apparatus for detection and monitoring of chemical species
A method for investigating a target environment to determine whether or in what amount a chemical species may be present therein, which comprises: (a) exposing to said environment an article of...
|
|
|
7341694 |
Ammonia sensor
In an ammonia sensor ( 1 ), lead portions ( 7 ) and ( 9 ) are provided on an insulating substrate ( 5 ); a pair of comb-shaped electrodes ( 11 ) and ( 13 ) are connected to the lead portions ( 7 )...
|
|
|
7329389 |
Sensor device and method for qualitative and quantitative analysis of gas phase substances
New sensors and methods for qualitative and quantitative analysis of multiple gaseous substances simultaneously with both high selectivity and high sensitivity are provided. The new sensors rely on...
|
|
|
7323343 |
Nitrogen monoxide, nitrogen dioxide and ozone determination in air
An analytical system is provided for determining nitrogen monoxide, nitrogen dioxide and ozone concentrations in air samples. An ultraviolet light source 4 is used to alter the equilibrium...
|
|
|
7297312 |
Simultaneous multianalyte electrochemical assay based on spatial resolution
A simultaneous multianalyte electrochemical assay includes a cell which has a surface and the surface includes analyte binding sites i.e., antibodies or antigens on a solid phase at distinct...
|
|
|
7233034 |
Hydrogen permeable protective coating for a catalytic surface
A protective coating for a surface comprising a layer permeable to hydrogen, said coating being deposited on a catalyst layer; wherein the catalytic activity of the catalyst layer is preserved.
|
|
|
7201874 |
System for automatically extracting and analyzing residual solvents in material samples
A system for quickly and automatically extracting and analysing residual solvents is realised for operating directly in the premises where the packing materials are being manufactured, printed...
|
|
|
7189364 |
Hydrogen sensor
A hydrogen sensor includes a first electrode 3 and a second electrode 4 provided in contact with a proton conduction layer 2 ; a gas diffusion controlling portion 6 provided between a...
|
|
|
6993955 |
Gas sensors
Semiconductor gas sensors with improved selectivity to target gases are provided by having a semiconductor gas-sensing layer and a layer thereon of microporous ceramic oxide having catalytic activity.
|
|
|
6948388 |
Wireless remote sensor
A sensing system includes a ring oscillator that emits electromagnetic radiation at a characteristic frequency. The ring oscillator comprises an odd number plurality of inverters that are...
|
|
|
6933151 |
Diagnostic system for monitoring catalyst performance
A diagnostic system for monitoring catalyst performance in an exhaust system comprises a plurality of treatment devices catalytically treating an exhaust gas stream, and a plurality of gas sensors...
|
|
|
6905655 |
Modification of selectivity for sensing for nanostructure device arrays
An electronic system for selectively detecting and identifying a plurality of chemical species, which comprises an array of nanostructure sensing devices, is disclosed. Within the array, there are...
|
|
|
6897070 |
Detection of gas phase materials
Sensors and methods of monitoring for the presence of gas phase materials by detecting the formation of films based on the gas phase material are disclosed. Advantageously, some gas phase materials...
|
|
|
6841391 |
Medical applications of artificial olfactometry
The present invention provides methods for detecting the presence of an analyte indicative of various medical conditions, including halitosis, periodontal disease and other diseases are also...
|
|
|
6838054 |
Biochemical devices and their methods of manufacture
Biochemical devices comprising a sensing surface that is at least partially covered by a nanocrystalline metal oxide semiconductor film which provides a recipient surface for immobilizing...
|
|
|
6830730 |
Method and apparatus for the on-stream analysis of total sulfur and/or nitrogen in petroleum products
An improved on-stream analyzer for monitoring sulfur or nitrogen content of liquid petroleum or beverage products is described. It consists of the following main components: a sample injector for...
|
|
|
6783989 |
Toxic substance detection
Polymeric compositions are provided for use in preparing sensors for the detection of extremely hazardous substances in the environment, such as chemical warfare agents. The polymers are inherently...
|
|
|
6767732 |
Method and apparatus for the detection of volatile products in a sample
A method and apparatus is provided for detection of volatile products from a sample using a transducer which changes voltage as a function of contact of the volatile products with the transducer to...
|
|
|
6756016 |
Gas sensor
A gas sensor for the detection of gases comprises a housing and an active element disposed within the housing. The active element is surrounded by a porous insulating material having a bulk density...
|
|
|
6726882 |
Hydrocarbon detector device
A hydrocarbon detector ( 20 ) includes a gas stream delivery element ( 26 ) configured to discharge a carrier gas ( 70 ) onto a surface ( 24 ). The carrier gas ( 70 ) serves to volatilize a...
|
|
|
6723565 |
Pulsed-flow total organic carbon analyzer
Methods and apparatus are disclosed for determination of the total concentration of organic carbon compounds in aqueous process streams utilizing a pulsed-flow technique for irradiating a water...
|
|
|
6719950 |
Miniaturized exhaust gas sensor
An exhaust gas sensor includes a housing and a sensor element supported by the housing. The sensor element includes a support member having an exhaust side, a reference side, and an aperture...
|
|
|
6682934 |
Automated airborne metal analyzer
A portable instrument for automatic collection and analysis of airborne lead concentrations in ambient air environments. Its improvements to the art of airborne lead detection and analysis permit...
|
|
|
6682699 |
Reduced power consumption gas chromatograph system
This invention provides a reduced power consumption gas chromatograph system ( 10 ) which includes a capillary gas chromatograph column member ( 12 ) which contains a chemical sample to be...
|
|
|
6661299 |
Odor sensor with organic transistor circuitry
Circuits include at least one-odor sensitive organic transistor having a conduction channel whose conductivity changes in response to certain odors. The organic transistors are interconnected to...
|
|
|
6644098 |
Heated electrode refrigerant detector utilizing one or more control loop
A gas detector for sensing the presence of at least one predetermined gas is operative in conjunction with a electrical power source and includes a detection circuit, a temperature controller, and...
|
|
|
6632404 |
Automatically actuated parallel sample injector valve
A sample injector valve capable of introducing multiple samples of material into multiple liquid or gas streams is provided. Such a valve is particularly useful for injecting multiple samples under...
|
|
|
6576460 |
Filtration-detection device and method of use
The present invention relates to a filtration-detection device for detecting or quantifying an analyte in a test sample including a filtration device having a first binding material immobilized...
|
|
|
6572826 |
Chemically sensitive sensor comprising arylene alkenylene oligomers
Chemically sensitive sensors, suitable for detecting analytes in fluids (in gaseous or liquid phase), wherein the chemically sensitive sensors comprise a chemically sensitive probe, which comprises...
|
|
|
6551842 |
Method and device for detecting analytes in fluids
A disposable, dry chemistry analytical system is disclosed which is broadly useful for the detection of a variety of analytes present in biological fluids such as whole blood, serum, plasma, urine...
|
|
|
6541268 |
Carbon dioxide sensor and a method of determining partial pressure of carbon dioxide
A carbon dioxide sensor including a closed chamber having as a wall substantially water-tight, carbon dioxide-permeable membrane and containing two electrodes. The chamber contains a film of...
|
|
|
6509148 |
Method for fabricating biosensors using hydrophilic polyurethane
Disclosed is a method for fabricating biosensors, using hydrophilic polyurethane. Bio-active reagents, including enzymes, antibodies, antigens, cells and receptors, are mixed with hydrophilic...
|
|
|
6484559 |
Odor sensing with organic transistors
A circuit includes at least one odor-sensitive organic field effect transistor (OFET) having a conduction channel whose conductivity changes in response to certain ambient odors and a feedback loop...
|
|
|
6479297 |
Sensor devices, methods and systems for detecting gas phase materials
Sensor arrays, methods, and systems for detecting the presence of gas phase materials by the formation of films based on the gas phase material are disclosed. The gas phase materials preferentially...
|
|
|
6464938 |
Device for measuring the concentration of hydrogen in a gaseous mixture
The present invention relates to a device for measuring the concentration of hydrogen in a gaseous mixture and in particular in the air constituting, for example, the atmosphere inside a closed...
|
|
|
6450007 |
Robust single-chip hydrogen sensor
A robust single-chip hydrogen sensor and a method for fabricating such a sensor. By adding an adhesion-promoting layer between the body of a sensor and an on-chip hydrogen-exposed...
|
|
|
6319723 |
Parts per trillion detector
An apparatus is disclosed which is capable of detecting a selected gas in a liquid sample to a sensitivity in the range of 10 to 10,000 parts per trillion. Such sensitivity is achieved by...
|
|
|
6284545 |
Filter for gas sensor
A filter for reducing the cross-sensitivity of a chlorine dioxide detector to hydrogen sulfide. The filter includes a high surface area substrate impregnated with a silver (I) salt or copper (II)...
|
|
|
6276191 |
Oxygen sensor
An oxygen sensor for determining the oxygen concentration in the exhaust gas flow of an internal combustion engine. The sensor includes an outer electrode exposed to the exhaust side and a...
|
|
|
6205843 |
Gas sensing element and a method for measuring a specific gas concentration
A gas sensing element having a sample gas chamber into which a sample gas is introduced, and a reference gas chamber into which a reference gas is introduced. A sensor cell detects a specific gas...
|
|
|
6180064 |
Semiconducting organic polymer gas sensor
A gas sensor comprising a pair of electrodes. The gas sensor includes one or more semiconducting organic polymers deposited between the pair of electrodes in such a manner as to effect a...
|