Chemical apparatus and process disinfecting – deodorizing – preser – Control element responsive to a sensed operating condition
Reexamination Certificate
2006-04-26
2008-12-30
Griffin, Walter D (Department: 1797)
Chemical apparatus and process disinfecting, deodorizing, preser
Control element responsive to a sensed operating condition
Reexamination Certificate
active
07470403
ABSTRACT:
An apparatus and method of using the same are provided for generating a gradient of particles within a microfluidic device. The microfluidic device includes a channel having an input and an output. The channel is filled with a predetermined fluid. Thereafter, particles from a source pass through a porous membrane into the input of the channel. A second membrane is provided adjacent the output of the channel to minimize convection therein. A sink communicates with the output of the channel. The source/sink combination creates a pseudo-steady state in the channel wherein the concentration of particles at a point does not vary dramatically with time.
REFERENCES:
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Abhyankar Vinay V.
Beebe David J.
Boyle Fredrickson , S.C.
Griffin Walter D
Ramdhanie Bobby
Wisconsin Alumni Research Foundation
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