Gas sensor and powder for gas sensor
US12379284B2 · kind B2 · utility
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2Claims
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Key dates
| Filing date | Jun 2, 2022 |
| Grant date | Aug 5, 2025 |
| Priority date | — |
| Expiry date | Aug 31, 2043 |
Classification
- Technology area (CPC G)Physics
- CPC primaryG01N27/41
- WIPO fieldMeasurement
- WIPO sectorInstruments
Abstract
A gas sensor has a solid electrolyte composed of zirconia containing yttria. Designating A % as the area ratio, in an entire cross section of the solid electrolyte, of the whole cross section of regions having less than 3.3 mol % of Y2O3 relative to the total ZrO2 and Y2O3, and designating B % as the area ratio, in the cross section of the solid electrolyte, of the entire cross section of regions (211) having at least 7 mol % of Y2O3 relative to the total ZrO2 and Y2O3, the total area ratio (A+B) %, which is the sum of A % and B %, is 10% or more.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.