Patent · US Expired

Method and device for immunoassay

US4138474A · kind A · utility

45Cited by
8References
4Claims
0Family size

Assignee

Inventor

Key dates

Filing dateMay 1, 1973
Grant dateFeb 6, 1979
Priority date
Expiry dateMay 1, 1993

Classification

  • Technology area (CPC Y)Emerging Cross-Sectional Technologies
  • CPC primaryY10S436/81
  • WIPO fieldMeasurement
  • WIPO sectorInstruments

Abstract

A method and device for immunological determinations wherein the device comprises a container housing a volume of dry, insoluble, yet highly hydrophilic, gel particles, containing binding protein or combinations of binding protein and radio-active tag material and in which the dry gel particles are characterized by pores of a size that permit entry of low molecular weight components into the intra gel volume but insufficient to permit entry of large molecular weight components which remain in the extra gel volume.

Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.