Reactive gas sensor
US4638286A · kind A · utility
13Cited by
9References
8Claims
0Family size
Assignee
Inventor
Key dates
| Filing date | Mar 26, 1985 |
| Grant date | Jan 20, 1987 |
| Priority date | — |
| Expiry date | Mar 26, 2005 |
Classification
- Technology area (CPC Y)Emerging Cross-Sectional Technologies
- CPC primaryY10T428/3192
- WIPO fieldMeasurement
- WIPO sectorInstruments
Abstract
A reactive gas sensor which utilizes an electrically conductive polymer composite which comprises an inner layer of an electrically conductive polymer, intermediate layers of a polymer which exhibits a low degree of gas permeability, and protective outer layers of a polymer which exhibits a low degree of moisture permeability. The preferred polymers for the intermediate layers are ethylene vinyl alcohol copolymers and polyvinylidene chloride. The sensor also includes means for measuring the resistance of the electrically conductive polymer.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.