Electroosmotic flow controlled microfluidic devices
May 8, 2020. Estimated Expiration Date is calculated based on simple USPTO term provisions. It does not account for terminal disclaimers, term adjustments, failure to pay maintenance fees, or other factors which might affect the term of a patent.Patent References 3893904 3923426 Valve with flexible sheet member Valve with flexible sheet member Chemically resistant diaphragm Micropump with valve structure Fluid handling in mesoscale analytical devices Microfluidic structure and process for its manufacture Electrokinetic packing of capillary columns Gas releasing electrochemical cell for fluid dispensing applications InventorApplicationNo. 566582 filed on 05/08/2000US Classes:204/601, Capillary electrophoresis type137/833, Structure of body of device204/451, Capillary electrophoresis204/452, With detailed detection204/454, With adjustment or alteration of electro-osmotic bulk flow204/600, Electrophoretic or electro-osmotic apparatus251/129.06, Having element dimensionally responsive to field422/99, Miscellaneous laboratory apparatus and elements, per se422/100, Pipette or other volumetric fluid transfer means422/103Valve or connector structureExaminersPrimary: Warden, JillAssistant: Brown, Johnnie R. Attorney, Agent or FirmForeign Patent References
International ClassesB81B 003/00B81B 005/00 B81B 007/04 B81B 007/02 AbstractIn one embodiment, a fluidic module, such as a microfluidic module, has a fluid-flow channel, an electroosmotic flow membrane positioned in the channel, and a cathode located on one side and an anode located on the other side of the membrane so that an electrolyte in the channel is transported through the membrane in the presence of a voltage. In another embodiment, the channel has a port, a flexible and fluid-impermeable diaphragm is added, the electrolyte is contained in a reservoir, and the membrane moves the bladder which acts as a valve for fluid leaving the channel through the port. In a further embodiment, electrolyte in a first reservoir is transported through the membrane to move the bladder to force fluid out of a second reservoir.Other References
Field of SearchCapillary electrophoresisWith detailed detection With adjustment or alteration of electro-osmotic bulk flow Electrophoretic or electro-osmotic apparatus Capillary electrophoresis type Pipette or other volumetric fluid transfer means Miscellaneous laboratory apparatus and elements, per se Remote or follow-up control system for electrical actuator Having element dimensionally responsive to field Structure of body of device Means to regulate or vary operation of device |
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