Chemistry: electrical and wave energy – Apparatus – Electrolytic
Reexamination Certificate
2007-02-27
2007-02-27
Nguyen, Nam (Department: 1753)
Chemistry: electrical and wave energy
Apparatus
Electrolytic
C204S424000, C204S426000, C204S431000
Reexamination Certificate
active
10447303
ABSTRACT:
A gas sensor element is provided which is designed to measure the concentration of hydrogen-containing gas accurately. The sensor element includes an oxygen pump cell working to keep the concentration of oxygen contained in measurement gasses entering a measurement gas chamber at a low concentration level and a hydrogen-containing gas measurement cell. The hydrogen-containing gas measurement cell is made up of a proton-conductive solid electrolyte body and a first and a second gas measurement electrode affixed to the proton-conductive solid electrolyte body. The first gas measurement electrode is exposed to the measurement gas chamber and serves to produce a signal between the first and second gas measurement electrodes as a function of the concentration of the hydrogen-containing gas.
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Makino Daisuke
Mizutani Keigo
Naito Masataka
Suzuki Kazunori
Nguyen Nam
Nippon Soken Inc.
Nixon & Vanderhye PC
Van Luan V.
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