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US Patent 6719535 - Variable potential electrokinetic device
US Patent Issued on April 13, 2004
Estimated Patent Expiration Date:
January 31, 2022Estimated 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.
Estimated Patent Expiration Date:
January 31, 2022Estimated 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.AbstractVariable potential electrokinetic devices and electrokinetic multipliers used for pumping and flow control are disclosed that offer improvements in safety and design flexibility. The devices of the present invention take advantage of combinations of pumping conduits and conducting conduits to permit the use of lower operating voltages in pumps, pressure multipliers, and flow controllers. Devices having N pumping stages and 2N+1 electrodes permit the use of arbitrary voltages at the fluid connection points between the devices and other system components, further improving device safety and flexibility.Other References
| InventorsApplicationNo. 10066528 filed on 01/31/2002US Classes:417/50, Electromagnetic417/49, Ionic with gettering417/48, ELECTRICAL OR GETTER TYPE417/53PROCESSESField of Search417/49, Ionic with gettering417/48, ELECTRICAL OR GETTER TYPE417/50, Electromagnetic417/53PROCESSESExaminersPrimary: Yu, Justine R.Assistant: Solak, Timothy P. US Patent References3427978, 3923426, 4789801, Electrokinetic transducing methods and apparatus and systems comprising or utilizing the sameIssued on: 12/06/1988 Inventor: Lee5116471, System and method for improving sample concentration in capillary electrophoresis Issued on: 05/26/1992 Inventor: Chien, et al.5632876, Apparatus and methods for controlling fluid flow in microchannels Issued on: 05/27/1997 Inventor: Zanzucchi, et al.5766435, Concentration of biological samples on a microliter scale and analysis by capillary electrophoresis Issued on: 06/16/1998 Inventor: Liao, et al.5961800, Indirect electrode-based pumps Issued on: 10/05/1999 Inventor: McBride, et al.6013164, Electokinetic high pressure hydraulic system Issued on: 01/11/2000 Inventor: Paul, et al.6019882, Electrokinetic high pressure hydraulic system Issued on: 02/01/2000 Inventor: Paul, et al.6171067, Micropump Issued on: 01/09/2001 Inventor: Parce6224728, Valve for fluid control Issued on: 05/01/2001 Inventor: Oborny, et al.6277257Electrokinetic high pressure hydraulic system Issued on: 08/21/2001 Inventor: Paul, et al. International ClassesH02R 4400F04F 1100 F04B 1924 |
