Particle populations and assays having varying amounts of magnetic material and particle concentrations among different subsets of particles and methods for processing assays having such particle populations
US9500644B2 · kind B2 · utility
Assignee
Inventors
Key dates
| Filing date | Feb 22, 2011 |
| Grant date | Nov 22, 2016 |
| Priority date | — |
| Expiry date | Apr 25, 2035 |
Classification
- Technology area (CPC H)Electricity
- CPC primaryH01F1/0054
- WIPO fieldMeasurement
- WIPO sectorInstruments
Abstract
Particle populations and assays are provided which have varying amounts of magnetic material and varying particle concentrations among different subsets of particles. In particular, the particle populations and assays include at least two particle sets with distinct sums of particles which are inversely related to the magnetic material concentration comprising each of the particles within the two particle sets, respectively. A method for processing an assay having such particle sets includes routing the assay in proximity to an imaging plane within a static imaging optical analysis system and generating a magnetic field in proximity to the imaging plane. The magnetic field is sufficient to attract and immobilize a ratio of particles from the at least two discrete particle sets that is different from the ratio of particles comprising the at least two discrete particle sets in the assay as the assay is introduced into the static imaging optical analysis system.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.