Production of a sensor for carbon monoxide or water vapor including a semi conductor metallic oxide, catalyst, and rheological agent
US5629474A · kind A · utility
18Cited by
14References
20Claims
0Family size
Assignee
Inventor
Key dates
| Filing date | Nov 2, 1995 |
| Grant date | May 13, 1997 |
| Priority date | — |
| Expiry date | Nov 2, 2015 |
Classification
- Technology area (CPC G)Physics
- CPC primaryG01N33/0067
- WIPO fieldMeasurement
- WIPO sectorInstruments
Abstract
A sensor to detect gases and vapors, particularly carbon monoxide and water vapor, at relatively low concentrations includes a substrate having a layer on a face of the substrate. The layer comprises a semi conductor metallic oxide (such as stannic oxide), a catalyst (such as platinum black), and a rheological agent (such as kieselguhr or sepiolite). The rheological agent induces porosity into the surface of the layer. The rheological agent affects the mixing and processing of the layer, and aids binding, resulting in a sensor with greater sensitivity and faster response.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.