Electrolysis: processes – compositions used therein – and methods – Electrolytic analysis or testing – For nitrogen or nitrogen containing compound
Reexamination Certificate
2006-05-30
2006-05-30
Olsen, Kaj K. (Department: 1753)
Electrolysis: processes, compositions used therein, and methods
Electrolytic analysis or testing
For nitrogen or nitrogen containing compound
C205S784500, C204S425000, C073S023310
Reexamination Certificate
active
07052595
ABSTRACT:
A gas sensor for determining the concentration of gas components in gas mixtures is used in particular to measure the concentration of nitrogen oxides in exhaust gases of internal combustion engines or in the interiors of motor vehicles. It contains an electrochemical measuring cell which includes a first electrode situated on a solid electrolyte and an additional electrode. The electrode is made of an oxide material containing lanthanum which at least catalytically decomposes nitrogen oxides. The pump current flowing between the electrodes is used as a measure of the nitrogen oxide concentration in the gas mixture.
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Mueller Bernd
Schulte Thomas
Wahl Thomas
Kenyon & Kenyon LLP
Olsen Kaj K.
Robert & Bosch GmbH
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