Moisture sensor
US4632879A · kind A · utility
14Cited by
4References
2Claims
0Family size
Assignee
Inventors
Key dates
| Filing date | Apr 27, 1984 |
| Grant date | Dec 30, 1986 |
| Priority date | — |
| Expiry date | Apr 27, 2004 |
Classification
- Technology area (CPC Y)Emerging Cross-Sectional Technologies
- CPC primaryY10T428/31935
- WIPO fieldMeasurement
- WIPO sectorInstruments
Abstract
A moisture sensor comprising a substrate, a bottom electrode formed on said substrate, a moisture sensitive film formed on said bottom electrode and a moisture permeable electrode formed on said moisture sensitive film, said moisture sensitive film being formed by heat-treating polyvinyl alcohol, thereby exhibiting a moisture sensitive characteristic which has a linear relationship between the impedance and the relative humidity.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.