Citation
(2011), "Patent abstracts", Sensor Review, Vol. 31 No. 1. https://doi.org/10.1108/sr.2011.08731aad.003
Publisher
:Emerald Group Publishing Limited
Copyright © 2011, Emerald Group Publishing Limited
Patent abstracts
Article Type: Patent abstracts From: Sensor Review, Volume 31, Issue 1
Title: SensorApplicant: Owlstone Ltd [GB]; Koehl Andrew [GB]Patent number: WO2009136190 (A1)Publication date: November 12, 2009
Abstract
A method and sensor for monitoring chemical species in a gas flow are described. An ionised sample of gas is passed through a flow channel, with a DC electric field applied transverse to the longitudinal axis of the channel. Any electric current produced by the ion flow is measured, with variations in the current being indicative of a change in composition of the gas flow. In certain embodiments, the DC field may be varied overtime, to sweep the field voltage. The detected current against field voltage graph may be taken as a profile of a particular gas composition. Variations in the profile again are indicative of a change in gas composition.
Title: Flue gas analyserApplicant: Alphasense Ltd [GB]Patent number: US2009038962 (A1)Publication date: February 12, 2009
Abstract
A fuel gas analyzer for measuring the concentration of oxygen in fuel gas, comprising an electrochemical oxygen sensor and water vapor removing means for reducing the relative humidity of received gas and/or nitrogen-containing-gas removing means for removing from received gas one or more gaseous species comprising nitrogen and oxygen which are either nitrogen dioxide, or formed from nitrogen dioxide in the presence of sufficient water vapor, which would otherwise lead to damage of the electrochemical oxygen sensor,
Title: Manufacturing method of SnO2 gas sensor, and manufacturing method of SnO2 carrying having noble metal nanoparticlesApplicant: Figaro EngineeringPatent number: JP2010032343 (A) (Figaro Engineering, Inc.)Publication date: February 12, 2010
Problem to be solved: To manufacture efficiently SnO2 having noble metal nanoparticles carried thereon.
Solution: A chelate compound equipped with at least two ligands coordinated into SnO2 and at least two ligands coordinated into a noble metal is added to hydrosol of SnO2, to thereby coordinate the chelate compound into SnO2 sol, wherein noble metal nanoparticles in which an organic compound is coordinated are dispersed in an organic dispersant is brought into contact with the hydrosol of SnO2 in which the chelate compound is coordinated, to thereby coordinate the chelate compound into the noble metal nanoparticles; thereby the noble metal nanoparticles are carried on SnO2 particles in the sol; and the calcination is performed to acquire an SnO2 gas sensor. The noble metal nanoparticles can be carried efficiently on SnO2.
Title: Gas sensor with smart pellistorApplicant: Life Safety Distrib AG [CH] (Life Safety Distribution AG)Patent number: EP2191260 (A1)Publication date: June 2, 2010
Abstract
A gas sensor includes a gas responsive pellistor and associated information specific to that pellistor. The information can include environmental compensation information, such as temperature or humidity compensation information or other manufacturing information, and is stored in a computer readable medium. Such information can be used by local circuitry in compensating the sensor while making ambient gas level determinations.
Title: Infrared sensor with front side bandpass filter and vacuum cavityApplicant: Sensirion AG [CH] (Life Safety Distribution AG)Patent number: EP2172755 (A1)Publication date: April 7, 2010
Abstract
An infrared sensor comprises a vacuum cavity with a temperature sensor located therein. An infrared filter plate is located at a distance from and above the temperature sensor by means of a spacer. The filter plate forms the top wall of the vacuum cavity. An additional seal layer can be provided for sealing spacer if spacer not gastight. This design dispenses with a separate cap between the vacuum cavity and the filter plate, which allows to manufacture the device more easily.
Title: SensorApplicant: Environics Oy [FI]Patent number: US2009312954 (A1)Publication date: December 17, 2009
Abstract
In general, the invention relates to gas sensing techniques as such, but more specifically, to a sensor structure that comprises a buried electrode structure in the sensor layers, the structure being arranged to be applicable in the related devices and/or measurements. The invention relates also to a measurement method of sensor resistance, which method comprises a step of utilisation having a bias voltage or a grounding applied to the buried electrode.
Title: Gas sensorApplicant: Ideal Star, Inc. [JP]; Univ. Okayama Nat. Univ. Corp. [JP]; Kasama Yasuhiko [JP]; Omote Kenji [JP]; Yokoo Kuniyoshi [JP]; Kubozono Yoshihiro [JP]; Okamoto Hideki [JP]; Kawasaki Naoko [JP]Patent number: W02010005080 (A1)Publication date: January 14, 2010
Abstract
Provided is a gas sensor using an organic semiconductor material that imposes little environmental burden yet offers an excellent gas detection characteristic, which is equipped with a gas detection element, that is provided with a semiconductor material substantially made of picene of which electroconductivity changes as a substance intrudes into said semiconductor material, and a pair of electrodes, that are connected to said gas detection element in order to allow said electroconductivity to be measured; whereby, a voltage is applied to the pair of electrodes, and a change in an electric response caused by a change in the electroconductivity of said gas detection element attributable to the intrusion of a substance into the semiconductor material of the gas detection element is measured in order to detect the presence of said substance in the atmosphere.