Cover layer for optical ion sensors
US5091800A · kind A · utility
16Cited by
14References
8Claims
0Family size
Assignee
Inventors
Key dates
| Filing date | Jul 8, 1988 |
| Grant date | Feb 25, 1992 |
| Priority date | — |
| Expiry date | Jul 8, 2008 |
Classification
- Technology area (CPC Y)Emerging Cross-Sectional Technologies
- CPC primaryY10S435/808
- WIPO fieldMeasurement
- WIPO sectorInstruments
Abstract
In order to eliminate interferences of an optical or chemical nature, preferably in optical sensors, a cover layer is provided which comprises a hydrophilic, ion-permeable polymer membrane containing precious metal pigments deposited by a reduction or reduction/cementation technique for the purpose of suppressing straylight.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.