Patent · US Expired

Covalently bonded high refractive index particle reagents and their use in light scattering immunoassays

US4480042A · kind A · utility

87Cited by

8References

3Claims

0Family size

Assignee

E.I. DU PONT DE NEMOURS AND COMPANY · US

Inventors

Alan R. Craig · Wilmington, US
William A. Frey · Wilmington, US
Charles C. Leflar · Wilmington, US
Catharine E. Looney · Wilmington, US
Michael A. G. Luddy · West Chester, US

Key dates

Filing date	May 18, 1983
Grant date	Oct 30, 1984
Priority date	—
Expiry date	May 18, 2003

Classification

Technology area (CPC Y)Emerging Cross-Sectional Technologies
CPC primaryY10S436/815
WIPO fieldMeasurement
WIPO sectorInstruments

Abstract

Novel particle reagents for light scattering immunoassays are provided. The particle reagents are high refractive index shell-core polymers covalently bonded to compounds of biological interest or analogs thereof. A method of measuring unknown concentrations of these compounds of biological interest by measuring changes in turbidity caused by particle agglutination or its inhibition is also provided.

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