Immunoassay elements comprising polymers containing vandium IV (V+4) ions
US5696193A · kind A · utility
3Cited by
4References
5Claims
0Family size
Assignee
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Key dates
| Filing date | Apr 25, 1994 |
| Grant date | Dec 9, 1997 |
| Priority date | — |
| Expiry date | Apr 25, 2014 |
Classification
- Technology area (CPC G)Physics
- CPC primaryG01N33/54386
- WIPO fieldMeasurement
- WIPO sectorInstruments
Abstract
A dry immunoassay analytical element, for assaying a ligand, comprising in the following order: PA1 (a) a layer containing a labeled ligand; PA1 (b) a spreading layer; PA1 (c) a receptor layer containing a fixed concentration of an immobilized receptor for the labeled ligand and the receptor is i) covalently bonded to polymeric beads having a diameter in the range of 0.1 to 5 .mu.m and ii) dispersed in a polymeric binder and PA1 (d) a support; characterized in that the spreading layer contains a water soluble polymer containing vanadium IV (V.sup.+4) ions.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.