Gas sensor element and gas sensor

Details Gas sensor element and gas sensor Gas sensor element and gas sensor

2006-07-24

2008-08-05

Bell, Bruce F (Department: 1795)

Chemistry: electrical and wave energy

Apparatus

Electrolytic

C204S424000, C204S427000, C204S428000, C204S429000

Reexamination Certificate

active

07407567

ABSTRACT:
A gas sensor element including: a solid electrolyte layer having a first surface and a second surface; a first electrode formed on the first surface of the solid electrolyte layer; a second electrode formed on the second surface of the solid electrolyte layer; and an insulating layer provided between the first electrode and the first surface of the solid electrolyte layer. The insulating layer covers an outer edge of the first electrode and has an opening through which a portion of the first electrode is exposed. The opening has an area that is smaller than that of the second electrode, and is provided at a position opposite the second electrode to form a detection portion constituted by the portion of the first electrode exposed through the opening, the second electrode and the solid electrolyte layer.

REFERENCES:
patent: 4294679 (1981-10-01), Maurer et al.
patent: 4861456 (1989-08-01), Mase et al.
patent: 6743352 (2004-06-01), Ando et al.
patent: 2002/0017467 (2002-02-01), Ando et al.
patent: 2004/0217002 (2004-11-01), Naito et al.

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