The patent badge is an abbreviated version of the USPTO patent document. The patent badge does contain a link to the full patent document.
The patent badge is an abbreviated version of the USPTO patent document. The patent badge covers the following: Patent number, Date patent was issued, Date patent was filed, Title of the patent, Applicant, Inventor, Assignee, Attorney firm, Primary examiner, Assistant examiner, CPCs, and Abstract. The patent badge does contain a link to the full patent document (in Adobe Acrobat format, aka pdf). To download or print any patent click here.
Patent No.:
Date of Patent:
Sep. 17, 2019
Filed:
Jan. 22, 2014
Sensirion Ag, Stafa, CH;
Marc Von Waldkirch, Zurich, CH;
Sensirion AG, Stafa, CH;
Abstract
A gas sensor comprises a metal oxide sensing patch, a heater for heating the sensing patch, electrodes for measuring the conductivity of the sensing patch and an evaluation unit for generating a resulting parameter indicative of at least one analyte. Further, a temperature sensor is provided for measuring the temperature at the location of the sensing patch. The evaluation unit is adapted to derive a first parameter indicative of the conductivity of the sensing patch and a second parameter indicative of the heating power required to maintain a desired temperature of the sensing patch or indicative of the deviation of the temperature at the sensing patch from the desired temperature. The evaluation unit further combines the first and second parameters for evaluating the resulting parameter, thereby using the sensing patch not only as a chemiresistor but also as a pellistor-type measurement device.