Fluid handling – Flow affected by fluid contact – energy field or coanda effect – Means to regulate or vary operation of device
Reexamination Certificate
2008-12-06
2011-11-08
Schneider, Craig (Department: 3753)
Fluid handling
Flow affected by fluid contact, energy field or coanda effect
Means to regulate or vary operation of device
C137S614110, C137S862000, C251S065000, C251S129030, C251S129140
Reexamination Certificate
active
08051878
ABSTRACT:
An apparatus for performing multi-dimensional assays using a microfluidic chip is presented. The apparatus comprises of two crossing series of micro-channels on the microfluidic chip. The apparatus further comprises of a plurality of magnetic valves placed at the crossings and a guiding magnet. When an operator places the guiding magnet in a vicinity of the chip, the guiding magnet produces a proximal magnetic field gradient at a location of each of the plurality of magnetic valves. At the first micro-channel crossing, a magnetic valve controls fluid flow in the first micro-channel, and another magnetic valve controls fluid flow in the second micro-channel at the first micro-channel crossing. Each magnetic valve comprises a magnetic bead and a cavity on the chip next to a corresponding micro-channel section.
REFERENCES:
patent: 5052429 (1991-10-01), Yoo
patent: 6398183 (2002-06-01), Kerger et al.
patent: 6606922 (2003-08-01), Case et al.
patent: 6802489 (2004-10-01), Marr et al.
patent: 6981518 (2006-01-01), Gilbert et al.
patent: 7338028 (2008-03-01), Zimmerling et al.
patent: 2004/0265150 (2004-12-01), McElfresh et al.
patent: 2005/0116798 (2005-06-01), Bintoro et al.
patent: 2006/0245933 (2006-11-01), Balch et al.
patent: 2010/0139797 (2010-06-01), Delamarche
patent: 2010/0140517 (2010-06-01), Delamarche
International Business Machines - Corporation
Morris Daniel P.
Schneider Craig
LandOfFree
Magnetic valves for performing multi-dimensional assays... does not yet have a rating. At this time, there are no reviews or comments for this patent.
If you have personal experience with Magnetic valves for performing multi-dimensional assays..., we encourage you to share that experience with our LandOfFree.com community. Your opinion is very important and Magnetic valves for performing multi-dimensional assays... will most certainly appreciate the feedback.
Profile ID: LFUS-PAI-O-4263188