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:
Aug. 19, 2025
Filed:
Dec. 15, 2022
Sensirion Ag, Stäfa, CH;
Andreas Rüegg, Männedorf, CH;
David Kiliani, Hombrechtikon, CH;
Matthias Studer, Männedorf, CH;
Nicolas Moeller, Stäfa, CH;
Mark Hornung, Stäfa, CH;
Lukas Bürgi, Zurich, CH;
Sensirion AG, Stäfa, CH;
Abstract
A thermal sensor device serves for determining a concentration of a target gas in a gas sample that further comprises a disturbance gas. The thermal sensor device comprises first and second measurement structures () comprising first and second temperature sensors (TS, TS) and a heater element () operable to cause heat transfer to the measurement structures through the gas sample. Processing circuitry provides heating power (P_) to the heater element and derives an output signal (S) based on a response of the temperature sensors to the heating power, the output signal being indicative of a concentration of the target gas in the gas sample. The first and second measurement structures have different heat dissipation capabilities, and the processing circuitry derives the output signal from a weighted difference of temperature signals from the first and second temperature sensors. Thereby, a cross-sensitivity of the output signal to a concentration change of the disturbance gas may be reduced or eliminated.