Multilayer analytical element having an impermeable radiation nondiffusing reflecting layer
US4363874A · kind A · utility
Assignee
Inventor
Key dates
| Filing date | Aug 7, 1981 |
| Grant date | Dec 14, 1982 |
| Priority date | — |
| Expiry date | Aug 7, 2001 |
Classification
- Technology area (CPC Y)Emerging Cross-Sectional Technologies
- CPC primaryY10S435/971
- WIPO fieldMeasurement
- WIPO sectorInstruments
Abstract
A multilayer analytical element for detecting a ligand in or the ligand binding capacity of a liquid sample of the type having a reagent layer(s) incorporating reagents which are responsive to the ligand in or the ligand binding capacity of the sample to give a detectable response, a radiation reflecting layer, and a support layer, the improvement wherein the reagent layer(s) is a radiation diffusing layer and the radiation reflecting layer is a radiation nondiffusing reflecting layer which is (a) interposed between the reagent layer(s) and the support layer; (b) impermeable to the ligand, reagents of the reagent layer(s), and products of their interreaction; and (c) inert to the ligand, reagents of the reagent layer(s), and products of their interreaction.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.