Chemistry: molecular biology and microbiology – Measuring or testing process involving enzymes or...
Reexamination Certificate
2006-04-25
2006-04-25
Lankford, Jr., Leon B. (Department: 1651)
Chemistry: molecular biology and microbiology
Measuring or testing process involving enzymes or...
C435S006120
Reexamination Certificate
active
07033747
ABSTRACT:
Methods and apparatus for testing a sample for target molecules or chemicals. The apparatus includes a rotatable optical disc having a reaction chamber and having at least two groups of beads or micro-particles, the different group of beads having at least two different densities, sizes, shapes, and/or color, and each bead in a group having different probes attached thereto. A sample is added to the reaction chamber and the disc is rotated. The reaction chamber has a density gradient medium that causes beads of different densities to remain at different radial locations, depending on the density of the beads. The beads are then inspected by directing a beam of electromagnetic radiation onto the disc. The beam may be reflected from or transmitted through the disc. The amount, or presence, or absence of targets is determined by analyzing the signal returned from the beam. Related methods of performing assays and making the disc apparatus are provided.
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Burstein Technologies, Inc.
Davis Ruth A.
Knobbe Martens Olson & Bear LLP
Lankford , Jr. Leon B.
Nagaoka & Co. LTD
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