Method and apparatus for quantitative determination of accumulations of magnetic particles
US6518747B2 · kind B2 · utility
137Cited by
23References
53Claims
0Family size
Assignee
Inventors
Key dates
| Filing date | Feb 16, 2001 |
| Grant date | Feb 11, 2003 |
| Priority date | — |
| Expiry date | Apr 12, 2021 |
Classification
- Technology area (CPC G)Physics
- CPC primaryG01R33/1215
- WIPO fieldMeasurement
- WIPO sectorInstruments
Abstract
Apparatus for detection and measurement of agglutinations of magnetic particles employing Hall sensors. A low frequency AC signal is employed to excite or bias the Hall sensors which reside in a DC magnetic field. The particles are moved into operative relationship with the Hall sensors in order to generate a signal representing the number of particles on the substrate. The method for such detection and measurement is also part of the invention.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.