Method and apparatus for making quantitative measurements of localized accumulations of target particles having magnetic particles bound thereto
US6046585A · kind A · utility
130Cited by
9References
36Claims
0Family size
Assignee
Inventor
Key dates
| Filing date | Nov 21, 1997 |
| Grant date | Apr 4, 2000 |
| Priority date | — |
| Expiry date | Nov 21, 2017 |
Classification
- Technology area (CPC G)Physics
- CPC primaryG01N35/0098
- WIPO fieldMeasurement
- WIPO sectorInstruments
Abstract
Apparatus for quantitatively measuring groups of magnetic particle. The particles are complexed with substances to be determined and are excited in a magnetic field. The magnetic particles are thereby caused to oscillate at the excitation frequency in the manner of a dipole to create their own fields. These fields are inductively coupled to sensing coils fabricated in a gradiometer configuration. The output signals from the sensing coils are appropriately amplified and processed to provide useful output indications.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.