Optical chemical sensor
US5774603A · kind A · utility
12Cited by
13References
12Claims
0Family size
Assignee
Inventors
Key dates
| Filing date | Mar 3, 1997 |
| Grant date | Jun 30, 1998 |
| Priority date | — |
| Expiry date | Mar 3, 2017 |
Classification
- Technology area (CPC G)Physics
- CPC primaryG01N21/80
- WIPO fieldMeasurement
- WIPO sectorInstruments
Abstract
An optical chemical sensor comprises an optical waveguide having a light transmitting substrate and a coating of an environmentally sensitive compound in a Zr/Si sol-gel glass binder on the substrate. The sensor is suitable for use in high pH environments. The environmentally sensitive compound may be a chemically sensitive dye e.g. a pH indicator dye.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.