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:
Nov. 15, 2011
Filed:
Mar. 25, 2009
Heinz-peter Frerichs, St. Peter, DE;
Hans-günter Zimmer, Reute, DE;
Tobias Kolleth, Freiburg, DE;
Christoph Wilbertz, Gundelfingen, DE;
Heinz-Peter Frerichs, St. Peter, DE;
Hans-Günter Zimmer, Reute, DE;
Tobias Kolleth, Freiburg, DE;
Christoph Wilbertz, Gundelfingen, DE;
Micronas GmbH, Freiburg, DE;
Abstract
In a procedure for measuring the concentration of a target gas, a gas sensor is provided whose sensor signal at constant temperature is dependent on a target gas concentration and has a lower measurement sensitivity in a first modulation range than in a second modulation range. The position of the modulation ranges is dependent on the temperature. The temperature of the gas sensor is controlled so that the sensor signal is essentially independent of the target gas concentration and lies within the second modulation range. The temperature of the gas sensor is then a measurement for the target gas concentration.