Chemistry: analytical and immunological testing – Involving an insoluble carrier for immobilizing immunochemicals – Carrier is inorganic
Reexamination Certificate
2008-04-15
2008-04-15
Chin, Christopher L. (Department: 1641)
Chemistry: analytical and immunological testing
Involving an insoluble carrier for immobilizing immunochemicals
Carrier is inorganic
C422S051000, C422S051000, C422S051000, C435S007100, C435S287200, C435S287700, C435S287800, C435S805000, C435S810000, C435S970000, C436S149000, C436S514000, C436S806000
Reexamination Certificate
active
11295486
ABSTRACT:
Superparamagnetic (“SPM”) subunits of 1–30 nm average mean diameter (e.g. ferro fluid) subparticles are treated with a magnetically noninterfering substance capable of coating and covering them (e.g, BSA) and they spontaneously form agglomerates of about 100 nm to about 450 nm or higher average mean diameter and are then used to form complexes with target biological ligands such as viruses, contained in large volumes of liquid. The complexes are subjected to the gradient intensity of a strong magnetic field, and excess liquid is removed, where upon an immunochromatographic assay is conducted to determine the identity and/or amount of target ligand present, in which operation SPM particles that bonded to the ligand function as tags for ligand detection.
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Piasio Roger N.
Turner Nathan
Binax, Inc.
Chin Christopher L.
Foley & Hoag LLP
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