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:
Dec. 09, 2008
Filed:
Sep. 24, 2003
Eberhard Schnaibel, Hemmingen, DE;
Erich Junginger, Stuttgart, DE;
Andreas Koring, Reutlingen, DE;
Ruediger Deibert, Esslingen, DE;
Harry Braun, Heimsheim, DE;
Lothar Diehl, Gerlingen, DE;
Eberhard Schnaibel, Hemmingen, DE;
Erich Junginger, Stuttgart, DE;
Andreas Koring, Reutlingen, DE;
Ruediger Deibert, Esslingen, DE;
Harry Braun, Heimsheim, DE;
Lothar Diehl, Gerlingen, DE;
Robert Bosch GmbH, Stuttgart, DE;
Abstract
A circuit configuration for operating a gas sensor is described, including a reference gas space in which an electrode is situated which is supplied with a reference gas pump current to maintain the concentration of the reference gas. A diagnostic system determines a concentration change of the reference gas via a change in the reference pump current and a time-based evaluation of the sensor signal of the gas sensor.