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. 30, 2014
Filed:
Apr. 29, 2003
Detlef Heimann, Gerlingen, DE;
Thomas Wahl, Pforzheim, DE;
Lothar Diehl, Gerlingen, DE;
Thomas Moser, Schwieberdingen, DE;
Stefan Rodewald, Ditzingen, DE;
Detlef Heimann, Gerlingen, DE;
Thomas Wahl, Pforzheim, DE;
Lothar Diehl, Gerlingen, DE;
Thomas Moser, Schwieberdingen, DE;
Stefan Rodewald, Ditzingen, DE;
Robert Bosch GmbH, Stuttgart, DE;
Abstract
A heating device for a sensor element of a gas sensor, in particular for use in exhaust gas analysis of internal combustion engines, has a heating element, which has an electrical resistor layer. The heating element is electrically insulated from at least one solid electrolyte layer by a layer containing barium and/or strontium and/or calcium. For this purpose, the heating element is embedded in a first insulator, which is adjoined by a second insulator. The first insulator has a higher barium and/or strontium and/or calcium content (expressed in weight percentage) than the second insulator.