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. 16, 2011
Filed:
Nov. 17, 2003
Jens Schneider, Rodez-Cedex, FR;
Detlef Heimann, Gerlingen, DE;
Thomas Wahl, Pforzheim, DE;
James-richard Waldrop, Ii, Belton, SC (US);
Jens Schneider, Rodez-Cedex, FR;
Detlef Heimann, Gerlingen, DE;
Thomas Wahl, Pforzheim, DE;
James-Richard Waldrop, II, Belton, SC (US);
Robert Bosch GmbH, Stuttgart, DE;
Abstract
A measuring sensor is described for determining a physical property of a measured gas, especially for determining the oxygen concentration or the pollutant concentration in the exhaust gas of internal combustion engines, which has a sensor element that is exposable to the measured gas which is at least partially coated with a protective layer that protects against harmful components in the measured gas. In order to achieve producing a 'contamination protection', that is cost-effective from a manufacturing technology point of view, particularly against silicon compounds and phosphorus compounds, the protective layer () is made of highly active γ- or δ-aluminum oxide (AlO) having additives of compounds of the alkaline metals group, the alkaline earths group, the IV B subgroup or the lanthanides group.