Analytical method and device for precise analysis with a simple sensor
US5866321A · kind A · utility
Assignee
Inventors
Key dates
| Filing date | Oct 25, 1996 |
| Grant date | Feb 2, 1999 |
| Priority date | — |
| Expiry date | Oct 25, 2016 |
Classification
- Technology area (CPC G)Physics
- CPC primaryG01N33/5438
- WIPO fieldMeasurement
- WIPO sectorInstruments
Abstract
An analyte and a reactant 3 that reacts with the analyte either directly or indirectly are allowed to react with each other on the analytical areas A of a substrate 1 and signals originating from the reaction are detected. In at least a signal detection step, either a signal generation-related portion 4x or a detector is provided in a portion that is opposed to the substrate 1 and high and low areas are formed in either the substrate 1 or the opposed portion or both in such a manner that the distance from each analytical area A of the substrate to the opposed portion is shorter than the distance from each of the non-analytical areas B of the substrate to the opposed portion, whereby signals originating from the reaction in the analytical areas A will be detected at higher intensities than signals originating from the reaction in the non-analytical areas B. The analyte can be quantitatively or qualitatively analyzed on the analytical areas of the substrate in high precision with reduced effects from the non-analytical areas of the substrate. Simultaneous analysis of multiple samples or simultaneous analysis for multiple items can also be accomplished with a simple sensor configurati…
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.