Nitrides and oxynitrides which can be used as selective detectors of reducing gases in the atmosphere, and detection device containing them
US4695432A · kind A · utility
18Cited by
2References
5Claims
0Family size
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Key dates
| Filing date | Mar 28, 1986 |
| Grant date | Sep 22, 1987 |
| Priority date | — |
| Expiry date | Mar 28, 2006 |
Classification
- Technology area (CPC Y)Emerging Cross-Sectional Technologies
- CPC primaryY10T436/175383
- WIPO fieldMeasurement
- WIPO sectorInstruments
Abstract
Nitrides and oxynitrides which can be used as selective detectors of reducing gases in the atmosphere, and a detection device containing them. Selective detectors of nitrogen-containing reducing gases in the atmosphere, in particular ammonia and gases containing NH and/or NH.sub.2 groups, of the semiconductor resistance type, the nitrides and oxynitrides according to the invention are of tetrahedral structure and contain: PA0 a metal chosen from the group comprising Li, Na, K, Be, Mg, Ca, Sr, Ba, Zn and Mn; PA0 a second element chosen from the group comprising Si, Ge, P, Al and Ga; PA0 nitrogen and, if appropriate, PA0 oxygen.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.