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Class 205/781 - Including nitrogen oxide (e.g., gaseous nitrogen dioxide, dissolved sodium nitrate, etc.)


Subclass of Class 205 - Electrolysis: processes, compositions used therein, and methods of preparing the compositions
Definition: Subject matter in which the material is analyzed or tested
No. of patents: 209
Last issue date: 05/15/2012


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NumberTitleIssue Date
8177957Multiple frequency method for operating electrochemical sensors
A multiple frequency method for the operation of a sensor to measure a parameter of interest using calibration information including the steps of exciting the sensor at a first frequency providing a first sensor response, exciting the sensor at a second frequency pr...
05/15/2012
8163161Gas sensor and method for detecting particles in a gas flow
A gas sensor for detecting particles in a gas stream has a first electrochemical pump cell, which has a measuring chamber in which a first electrode is disposed to pump particles between the first measuring chamber and the gas stream. Furthermore, a second electroch...
04/24/2012
7914664Nitric oxide sensor
Electrodes comprising ruthenium oxide nanoparticles are disclosed. The ruthenium oxide nanoparticles are located within the electrode or as a coating thereon. The electrode is especially suited for measuring the presence and/or concentration of nitric oxide in a sam...
03/29/2011
7875165Method of correcting output of NOx sensor
A method of correcting an output of a NOx sensor including: a first step of obtaining a sensor-variation relational expression based on a relationship between an Ip2/Ip0 value and an output change percentage for a calibration sensor; a second step of o...
01/25/2011
7828956Method for measuring concentrations of gas moieties in a gas mixture
In at least one embodiment, a method is described for measuring concentrations of gas moieties in a gas mixture. A mixed-potential gas sensor is exposed to a gas mixture in order to obtain a first and a second mixed-potential gas sensor output responses. The first o...
11/09/2010
7820028Oxides of nitrogen gas sensors and methods
Apparatus and methods for measuring NOx concentrations are disclosed. One method includes the steps of providing a gas stream having a NO concentration and a NO2 concentration, wherein a sum of the NO concentration and the NO2 concen...
10/26/2010
7655131Gas sensor and method for controlling the same
Disclosed is a gas sensor for controlling a concentration of oxygen and/or measuring NOx by allowing a current to flow through an ion-conductive member for conducting oxygen ion, by the aid of a current supply circuit, wherein the current, which is outputted from th...
02/02/2010
7578925System and method for updating a baseline output of a gas sensor
A method of operating a gas sensor is disclosed, wherein the sensor includes a pumping electrode configuration and a measuring electrode configuration, and wherein the method includes operating the sensor in a first mode in which a first, lower pumping potential suf...
08/25/2009
7455761Nitrogen oxide sensor with attenuated oxygen dependence of the NOx signal
In a method and with a circuit for operating a nitrogen oxide sensor for determining the nitrogen oxide (NOx) concentration in a gas mixture, in particular in post-treatment of an automotive exhaust, an electric pumping voltage (U_APE,IPE) which induces a pumping cu...
11/25/2008
7427347Method for operating a measuring probe for measuring a gas concentration
In a method for operating a measuring probe for measuring a gas concentration in a measuring gas with the aid of a solid electrolyte which conducts oxygen ions and has a measurement cavity for holding the measuring gas, a measuring electrode and an external electrod...
09/23/2008
7360395Gas sensor
A gas sensor which includes walls delimiting a gas detection chamber, and having an introduction port (or an inlet) through which an observed gas is introduced into the gas detection chamber, a measuring element disposed in the gas detection chamber and measuring co...
04/22/2008
7351318Gas sensing element
A gas sensing element has at least a sensor cell consisting of a measured gas side electrode positioned in a measured gas chamber, a reference electrode being operative association with the measured gas side electrode, and a solid electrolytic substrate having surfa...
04/01/2008
7320746Concentration detector
A concentration detector for detecting the concentration of a particular component in a gas based upon the amount of oxygen formed by the decomposition of the particular component, comprising oxygen-forming means for forming oxygen by decomposing the above particula...
01/22/2008
7309415Gas sensor and method for measuring a gas component in a gas mixture
A gas sensor based on solid electrolyte is proposed for measuring a gas component in a gas mixture, having at least one sensitive region, which has a first means for producing a reaction gas from an additional gas component of the gas mixture. A second means is situ...
12/18/2007
7294252NOx sensor and methods of using the same
Disclosed herein are NOx sensors and methods of using the same. In one embodiment, a method for sensing NOx comprises: contacting a first NOx electrode with the gas, contacting a second NOx electrode with the gas, determining a NO2 emf between the first N...
11/13/2007
7291503Reversible resistivity-based sensors
One aspect of the present invention relates to a method for detecting the presence of an analyte by comparing the conductivity of a mixture containing an analyte and a sensor to the conductivity of the sensor in the absence of analyte. In certain embodiments, the se...
11/06/2007
7288175Noiseless gas concentration measurement apparatus
A noiseless circuit structure of a gas concentration measuring apparatus is provided. The gas concentration measuring apparatus includes a control circuit and a gas sensor including a solid electrolyte body, a cell, and a heater serving to heat the solid electrolyte...
10/30/2007
7258771Air/fuel ratio detection apparatus
The invention relates to an air/fuel ratio detection apparatus. This apparatus includes (a) a heater portion having an elongate cylindrical shape and heating by applying electricity thereto from outside; (b) a solid electrolyte layer surrounding the heater portion a...
08/21/2007
7255475Thermometry probe calibration method
A method in which thermal mass and manufacturing differences are compensated for in thermometry probes by storing characteristic data relating to individual probes into an EEPROM for each probe which is used by the temperature apparatus. ...
08/14/2007
7252748NOx measurement apparatus
NOx sensor element of oxygen-ion conductive solid electrolyte body 15; flow passage (7, 5, 8, 6) provided within the body for introducing analyte gas; oxygen partial pressure detection cell 3; first oxygen pump cell 1 for controlling oxyg...
08/07/2007
7236083Resistance type oxygen sensor and oxygen sensor device using it and air/fuel ratio control system
The present invention provides a resistance-type oxygen sensor, and an oxygen sensor device and an air/fuel ratio control system using same. The present invention relates to a resistance-type oxygen sensor with suppressed temperature dependence, wherein: (1) a gas d...
06/26/2007
7220343Solid-state electrochemical NOsensors
The embodiments generally relate to porous electrodes for use in solid-state NOx sensors, whereby the electrodes are comprised primarily of ceramic material and electronically conducting material. The electrodes are prepared by impregnating a porous ceramic material...
05/22/2007
7217355Nogas sensor method and device
The present invention is a method and apparatus for measuring the total NOx concentration in a gas stream utilizing the principles of a NOx sensor, i.e., mixed potential sensor. The exhaust gas is first conditioned by a catalyst assembly that c...
05/15/2007
7180596Gas concentration detector
A gas concentration detector prevents deviation in output due to a difference in oxygen reactivity between electrode materials to accurately detect a specific gas component in a gas to be measured, such as NOx in an exhaust gas. A sensor element in an NOx sensor has...
02/20/2007
7160435Gas sensor and method for controlling the same
Disclosed is a gas sensor for controlling a concentration of oxygen and/or measuring NOx by allowing a current to flow through an ion-conductive member for conducting oxygen ion, by the aid of a current supply circuit, wherein the current, which is outputted from th...
01/09/2007
7156966Nox-decomposing electrode and NOx concentration-measuring apparatus
A detecting electrode comprises a first cermet electrode layer formed directly on a solid electrolyte layer and a second cermet electrode layer formed on the first cermet electrode layer. A ratio between an alloy of Pt—Rh and ZrO2 in the first cermet el...
01/02/2007
7157134Layered structure, sensor and method of producing and use of the same
The invention concerns a layered structure comprising at least two material layers. The layered structure is formed of a conductive polymer on a substrate material layer to allow a reaction in the conductive polymer material when the layered structure is exposed to ...
01/02/2007
7153412Electrodes, electrochemical elements, gas sensors, and gas measurement methods
Electrode having high activity to oxygen gas and low activity to flammable gas is provided. An oxygen pump includes oxide-ion conductive solid electrolyte 2, electrode 8 which is an inactive electrode, and active electrode 10. Electrode 8...
12/26/2006
7153401Current-biased potentiometric NOx sensor for vehicle emissions
A nitrogen oxide sensor system for measuring the amount of nitrogen oxide in a gas. A first electrode is exposed to the gas. An electrolyte is positioned in contact with the first electrode. A second electrode is positioned in contact with the electrolyte. A means f...
12/26/2006
7153402NOx-decomposing electrode and NOx concentration-measuring apparatus
A detecting electrode comprises a first cermet electrode layer formed directly on a solid electrolyte layer and a second cermet electrode layer formed on the first cermet electrode layer. The ratio between Pt and Rh in the first cermet electrode layer ranges from 10...
12/26/2006
7117718Device for ascertaining a particle concentration in an exhaust gas flow
A device for ascertaining a particle concentration in an exhaust gas flow of a combustion device, particularly a diesel combustion device, is provided, which device ascertains very small particle concentrations in the exhaust gas of combustion devices, accompanied b...
10/10/2006
7114325Control system with a sensor
An improved engine control system using a NOx sensor is disclosed. In one example, the NOx sensor structure and/or signals are modified to improve distance transmission of NOx sensor output signals so that at least some processing electronics can be relocated remote...
10/03/2006
7109853System for detecting and releasing a person locked in the trunk of a vehicle
A vehicle safety system automatically detects the presence of a person sealed in the trunk of an automobile by sensing the CO2 respiration of the person. Visible, audio and radio alarms are generated in response to the detection of a person in the trunk. ...
09/19/2006
7083710Gas sensor, in particular a lambda sensor
The reference air channel of a gas sensor or a lambda probe having a laminate body produced by printing technology is provided. The laminate body is produced by printing a suitably structured layer onto a neighboring layer, for example, by screen printing. ...
08/01/2006
7052595Gas sensor for determining the concentration of gas components in gas mixtures and use thereof
A gas sensor for determining the concentration of gas components in gas mixtures is used in particular to measure the concentration of nitrogen oxides in exhaust gases of internal combustion engines or in the interiors of motor vehicles. It contains an electrochemic...
05/30/2006
7048844Gas sensor and method for use thereof
A sensor comprises: a pump cell comprising an inner pump electrode, an outer pump electrode, a pump cell electrolyte layer interposed between the inner pump electrode and the outer pump electrode and a cell isolation layer disposed on the inner pump electrode on a s...
05/23/2006
7030742Dual channel air/fuel ratio gauge
There is provided an air/fuel ratio gauge for monitoring an engine exhaust mixture of an engine having a plurality of oxygen sensors. The gauge of the present invention comprises a gauge housing. A gauge controller is disposed within the gauge housing and is electri...
04/18/2006
7025734Guidewire with chemical sensing capabilities
A guidewire with a sensor which can detect NO and/or superoxide levels is disclosed. This invention can be useful for in vivo analysis of vascular health. ...
04/11/2006
7018673Oxygen sensor and emission control system
An emission control system is disclosed for determining a concentration of oxygen in a flow of gas which has a sensor. The sensor has a diffusion barrier, an electrolyte material, and a counter-electrode. The counter-electrode is configured to support the diffusion ...
03/28/2006
7007543Air-fuel ratio sensor
An air-fuel ratio sensor includes a sensor element inserted through a cylindrical housing for detecting an air-fuel ratio in an atmosphere of unburnt gas, and a measured gas side cover disposed on an end of the cylindrical housing so as to cover the sensor element a...
03/07/2006
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