Method and apparatus for making quantitative measurements of localized accumulations of magnetic particles
US6275031A · kind A · utility
109Cited by
14References
23Claims
0Family size
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Key dates
| Filing date | May 22, 2000 |
| Grant date | Aug 14, 2001 |
| Priority date | — |
| Expiry date | May 22, 2020 |
Classification
- Technology area (CPC G)Physics
- CPC primaryG01N35/0098
- WIPO fieldMeasurement
- WIPO sectorInstruments
Abstract
Apparatus for quantitatively measuring groups of magnetic particles. 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.