Patent · US Expired

Composition structure for NOx sensors

US6379514B1 · kind B1 · utility

4Cited by

6References

6Claims

0Family size

Assignee

Robert Bosch GmbH · DE

Inventors

Thomas Schulte · Paderborn, DE
Thomas Wahl · Pforzheim, DE
Bernd Schumann · Rutesheim, DE
Reiner Schuetz · Ditzingen, DE
Rainer Waser · Aachen, DE

Key dates

Filing date	Sep 28, 2000
Grant date	Apr 30, 2002
Priority date	—
Expiry date	Sep 28, 2020

Classification

Technology area (CPC G)Physics
CPC primaryG01N27/4075
WIPO fieldMeasurement
WIPO sectorInstruments

Abstract

A structural arrangement for NOx sensors including a first selectively oxygen ion-conductive layer and a second gas-permeable, nonconductive layer, the latter having a porous spinel structure or porous platinum. The oxygen ion-conductive layer made from a mixed-conductive ceramic can have an additional layer of a material which is catalytically inactive to NOx.

Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.