Chemical sensors
US5308771A · kind A · utility
109Cited by
9References
51Claims
0Family size
Assignee
Inventors
Key dates
| Filing date | Apr 13, 1992 |
| Grant date | May 3, 1994 |
| Priority date | — |
| Expiry date | Apr 13, 2012 |
Classification
- Technology area (CPC Y)Emerging Cross-Sectional Technologies
- CPC primaryY10T436/216
- WIPO fieldMeasurement
- WIPO sectorInstruments
Abstract
A device for detecting the presence or concentration of an analyte, a method of making the device, and a method of detecting the presence or concentration of an analyte. The invention features one or more supports, such as beads, which carry a thin film of polymer substrate. The polymer substrate has a sensing reagent and a porous matrix. The sensing reagent alters the optical properties of the polymer substrate in the presence of analyte.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.