Electrokinetic high pressure hydraulic system
Patent 6277257 Issued on August 21, 2001. Estimated Expiration Date: 
March 18, 2019. 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.
March 18, 2019. 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 ReferencesElectokinetic high pressure hydraulic system Patent #: 6013164 Inventors
AssigneeApplicationNo. 271687 filed on 03/18/1999US Classes:204/450, Electrophoresis or electro-osmosis processes and electrolyte compositions therefor when not provided for elsewhere204/600, Electrophoretic or electro-osmotic apparatus204/647, Particle bed separator (e.g., inert particles, ion exchange beads, etc.)204/648Bulk separator for solids and liquids (e.g., to dewater solids, clarify water, etc.)ExaminersPrimary: Phasge, Arun S.Attorney, Agent or FirmForeign Patent References
International ClassB01D 061/44AbstractAn electrokinetic high pressure hydraulic pump for manipulating fluids in capillary-based systems. The pump uses electro-osmotic flow to provide a high pressure hydraulic system, having no moving mechanical parts, for pumping and/or compressing fluids, for providing valve means and means for opening and closing valves, for controlling fluid flow rate, and manipulating fluid flow generally and in capillary-based systems (Microsystems), in particular. The compact nature of the inventive high pressure hydraulic pump provides the ability to construct a micro-scale or capillary-based HPLC system that fulfills the desire for small sample quantity, low solvent consumption, improved efficiency, the ability to run samples in parallel, and field portability. Control of pressure and solvent flow rate is achieved by controlling the voltage applied to an electrokinetic pump.Field of SearchElectrophoresis or electro-osmosis processes and electrolyte compositions therefor when not provided for elsewhereElectrophoretic or electro-osmotic apparatus Particle bed separator (e.g., inert particles, ion exchange beads, etc.) Bulk separator for solids and liquids (e.g., to dewater solids, clarify water, etc.) |
| ||||||||||||||
