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7080545 |
Apparatus and process for sensing fluoro species in semiconductor processing systems
A gas detector and process for detecting a fluorine-containing species in a gas containing same, e.g., an effluent of a semiconductor processing tool undergoing etch cleaning with HF, NF 3 , etc....
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7073403 |
Method and apparatus for the collection of samples
A system for the collection of near real time confirmation samples is provided to quickly eliminate false positive alarms by confirming the presence or absence of a chemical agent when a monitor...
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7069770 |
Ammonia sensor element, heater, and method for making the same
A sensor element can comprise a co-fired heater section, a sensing section, and a third insulating layer disposed between the electrode portion and the temperature sensor. The heater section can...
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7069769 |
Ultraviolet photoacoustic ozone detection
A photoacoustic ozone detector includes an acoustic chamber, an ultraviolet light source, and a detector to detect audio signals. The acoustic chamber has an inlet for receiving a gas mixture...
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7069768 |
Method and apparatus for eliminating and compensating thermal transients in gas analyzer
The invention concerns a gas analyzer comprising: a measuring volume ( 2 ), a radiation source ( 1 ) for providing a beam to pass said measuring volume; a heat sink ( 16 ) for said radiation...
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7063302 |
Sample valve with integral sample shut off function for chromatograph
A multiple port valve integrated with the function of the sample shut off valve is disclosed. The integration of the sample shut off function eliminates extra plumbing and labor costs associated...
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7064660 |
System and method for inferring an electronic rendering of an environment
A system and method for inferring an electronic rendering ( 170 ) of an environment ( 110 ) comprises a plurality of devices ( 341 and 345 ), and a processing device. Each wireless device is...
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7063668 |
Method and arrangement for acoustic determination of moisture content of a gas mixture
A mechanical breathing aid has first and second inlets respectively connectable to a source of air and a source of oxygen. A mixing location is in gaseous communication with the first and second...
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7062385 |
Intelligent electro-optical nucleic acid-based sensor array and method for detecting volatile compounds in ambient air
The present invention generally relates to nucleic acid-based sensors and methods for detecting volatile analytes. More particularly, this invention relates to nucleic acid-based optical sensors,...
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7060652 |
Gas sensor
A liquid electrode mixture for use in a gas sensor having from about 60 to about 240 milligrams of platinum black catalyst; from about 900 to about 1100 milligrams of water; from about 300 to about...
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7056474 |
Hydrocarbon sensor and collector
A hydrocarbon sensor and collector. An element that is capable of absorbing and releasing hydrocarbons is positioned in the air intake system of a vehicle, upstream from the engine and wholly in...
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7051573 |
Gas sensor chamber and odor detection method
The invention relates to a chamber ( 2 ) for gas sensors ( 9 ) to be used in a device ( 1 ) for detecting aromas or odors. The chamber ( 2 ) comprises three portions ( 5, 6, 7 ) in which there is a...
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7048776 |
Advanced air cleaning system and method
A method and system removes nuclear, biological and chemical (NBC) agents from an air stream from a facility HVAC. The system includes an irradiation zone, a saturation zone and a precipitation...
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7041256 |
Poison resistant combustible gas sensors and method for warning of poisoning
A poison resistant combustible gas sensing element, a method for its production and a method for determining poisoning of the element. The element includes an electric heating element, an inner...
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7036352 |
Gas sensor
A gas sensor comprising: a gas sensor element extending in an axial direction; a cylindrical metal shell enclosing said gas sensor element such that a leading end portion of said gas sensor element...
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7036351 |
Compensated open-loop control of oxygen sensor heater
An oxygen sensor heater control determines heater activation based on an open-loop control parameter and a correction factor that compensates for part-to-part variability. Following a cold start...
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7032467 |
Package biochemical hazard and contraband detector
This apparatus and method allows collection concentrated sample of content in shipping packages without unsealing the package by forcing airflow via existing hidden gaps or, if necessary, creating...
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7024916 |
Vacuum heat treatment furnace and method of and apparatus for measuring carbon concentration in atmosphere having reduced pressure.
A vacuum heat treatment furnace comprising a furnace shell, a casing arranged in an inner side of the furnace shell, a heat insulating layer consisting of a thick plate-like alumina-silica series...
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7019655 |
System and methods for detecting harmful agents within contents of mail
A system and methods of the present invention advantageously provide efficient mail processing and handling that, as compared to existing procedures, enhances detection within the mail being...
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7019657 |
Method, apparatus and system for fire detection
An apparatus for detecting and indicating the presence of combustion products comprising a first combustion product monitor for monitoring for the presence of a first combustion product and...
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7018845 |
Method for staged oxidation for enhanced nitrogen and sulfur detection
A more efficient method for combustion or oxidation of samples containing nitrogen, phosphorus and/or sulfur to their corresponding oxides is disclosed, where method uses multi-staged addition of...
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7014691 |
Apparatus and method for treating compressed air
An apparatus for treating compressed air from a rail yard compressed air supply pipeline leading from a central air compressor to outlets at remote locations in a rail yard prior to charging air...
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7007542 |
Method of warning of poisoning in poison resistant combustible gas sensors
A poison resistant combustible gas sensing element, a method for its production and a method for determining poisoning of the element. The element includes an electric heating element, an inner...
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7010433 |
Indirect measurement of diluents in a multi-component natural gas
A method of indirectly measuring the diluent (nitrogen and carbon dioxide) concentrations in a natural gas mixture. The molecular weight of the gas is modeled as a function of the speed of sound in...
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7003405 |
Methods for characterizing subsurface volatile contaminants using in-situ sensors
An inverse analysis method for characterizing diffusion of vapor from an underground source of volatile contaminant using data taken by an in-situ sensor. The method uses one-dimensional solutions...
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6997037 |
Determination of effective composition of a mixture of hydrocarbon gases
A method and apparatus for determining the effective composition of a mixture of gases including a plurality of hydrocarbon gases, the method comprising selecting one or more effective hydrocarbons...
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6997039 |
Carbon nanotube based resonant-circuit sensor
Disclosed are resonant gas sensors and methods for forming and using the disclosed sensors. The sensors include a resonator including a layer comprising adsorptive nanostructures, for example...
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6997040 |
Gas sensor and fabrication method thereof
A gas sensor includes a silicon substrate provided with a recess, an insulating layer, a first and a second conductive patterned layers and a detecting portion for sensing a gas which passes there...
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6987448 |
Medical gas alarm system
A medical gas alarm system for use in a healthcare facility having a medical gas system and having a network of computer devices is provided. The alarm system includes at least one area alarm...
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6983640 |
Generator monitoring, control and efficiency
A system for generating electricity includes a generator and an interface. The generator is coupled to the interface and provides data to the interface regarding electricity generation. The...
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6970119 |
Analog to digital converter circuit for correcting jumper line detection error
An analog to digital converter circuit included in a meter ECU detects an output voltage of a potentiometer and a source voltage outputted from a battery, and converts them to different pieces of...
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6964187 |
Vacuum sensor
An apparatus and method for measuring the vapor or gas content of a vacuum chamber ( 1 ) by a vapor sensor ( 21 ) located in the fore-line of a vacuum system is provide. The gas or vapor content is...
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6960476 |
Method and apparatus for analyzing mixtures of gases
Disclosed herein is a method and apparatus for analyzing, sensing and measuring the concentrations of various gases, including NO x , hydrocarbons, carbon monoxide and oxygen, in a multi-component...
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6958131 |
Optical sensor and optical process for the characterization of a chemical and/or bio-chemical substance
The optical sensor contains an optical waveguide ( 1 ) with a substrate ( 104 ), waveguiding material ( 105 ), a cover medium ( 106 ) and a waveguide grating structure ( 101-103 ). By means of a...
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6957155 |
Method and apparatus for inspecting leakage of container
A method for inspecting leakage of a container includes a differential pressure generation step of generating a differential pressure between the inside and the outside of a container; an ozone gas...
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6955787 |
Integrated biological and chemical sensors
An array of piezoelectric resonators used in a sensor device in order to identify chemical and biological agents. The resonators can operate as bulk acoustic wave (BAW), surface acoustic wave...
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6952945 |
Method and apparatus for concentrating samples for analysis
A method for analyzing a gas sample is described. The method comprises providing a gas sample, increasing pressure applied to the gas sample to compress the sample to a smaller volume and provide a...
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6954143 |
Mobile system for responding to hydrogen sulfide gas at a plurality of remote well sites
A mobile system travels with a work crew to various remote well sites and monitors the presence of H2S (hydrogen sulfide gas) at those sites. If the concentration of H2S reaches a toxic level, the...
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6952947 |
Measuring head for a device for measuring the concentration of a paramagnetic gas
A measuring head for the determination of the concentration of a paramagnetic gas in a gas sample has first and second housing parts ( 21, 2 ) made of a steel alloy for accommodating a magnet coil...
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6945119 |
Apparatus and methods for heat loss pressure measurement
A heat loss gauge for measuring gas pressure in an environment includes a resistive sensing element and a resistive compensating element. The resistive compensating element is in circuit with the...
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6938459 |
Method for detecting moisture level in apparatus for treating and preparing food and related food treatment and preparation apparatus
The present invention refers to a method of detecting the moisture in an apparatus for treating and preparing food, as well as to a method of treating and preparing food. In the method according to...
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6941230 |
Method of determining the gas quality
The invention relates to a method of determining mainly the compressibility number K, the standard volumetric gross calorific value H v,n and the standard density ρ n of test gases using values...
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6935338 |
Fluid resistant airway adapter
An airway adaptor that includes a tubular body having a first gas flow passage defined therein. A protrusion extends from an interior wall of the tubular body into the gas flow passage. The...
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6929012 |
Process for the isolation of a major harmful oxidant from cigarette smoke
The components of cigarette smoke, known until now, do not explain the overwhelming hazardous effects of smoking; this invention describes the isolation, identification and procedures for...
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6927066 |
Process for the determination of MTBE in the ground and air
A process is described, and also the system for its embodiment, for the determination of pollution by MTBE in the soil and in the overlying atmosphere. An example is described relating to the...
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6927583 |
Fuel sensor
A sensor ( 20 ) includes a single capacitor ( 30 ) that operates in two different modes to obtain capacitance and conductance information when a mixture flows between the electrodes ( 32, 34 ) of...
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6915660 |
Method and system for liquefaction monitoring
A method and system for liquefaction monitoring of a gas in a gas piping system in which pressure and temperature information about the gas is gathered and the liquefaction status of the gas is...
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6913731 |
Oxygen probe
Intended for application on ducts through which flow a fluid at a high temperature, and particularly at a high pressure, comprising two bodies ( 4 ) and ( 8 ) which axially screw onto each other,...
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6911180 |
Catalytic sensor
A combustible gas sensor includes an active element in electrical connection with a measurement circuit. The measurement circuit includes a thermistor network to compensate for the effect of...
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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...
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