Humidity sensing apparatus
US4677416A · kind A · utility
56Cited by
5References
13Claims
0Family size
Assignee
Inventors
Key dates
| Filing date | Nov 22, 1985 |
| Grant date | Jun 30, 1987 |
| Priority date | — |
| Expiry date | Nov 22, 2005 |
Classification
- Technology area (CPC G)Physics
- CPC primaryG01N25/68
- WIPO fieldMeasurement
- WIPO sectorInstruments
Abstract
An integrated circuit cooling device and a dew point hygrometer employing such a cooling device having a substrate with a peripheral region surrounding a central aperture, the substrate being overlaid by an insulating layer with a Peltier cooling device formed thereon. The Peltier device includes a plurality of alternate metallic segments of dissimilar metals arranged and joined to form first and second groups of corresponding junctions of which the first group is located over the peripheral region of the substrate and the second group is located over the central aperture.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.