Computer program for making measurements of accumulations of magnetic particles
US6483303B2 · kind B2 · utility
96Cited by
28References
1Claims
0Family size
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Key dates
| Filing date | Jul 23, 2001 |
| Grant date | Nov 19, 2002 |
| Priority date | — |
| Expiry date | Jul 23, 2021 |
Classification
- Technology area (CPC Y)Emerging Cross-Sectional Technologies
- CPC primaryY10S977/96
- WIPO fieldMeasurement
- WIPO sectorInstruments
Abstract
An apparatus is provided for quantitatively measuring groups of magnetic particles. The particles are complexed with substances to be determined and are excited in a magnetic field. The magnetizations of 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 at least one sensor such as 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.