Valve for controlling flow of a fluid
Patent 7217351 Issued on May 15, 2007. Estimated Expiration Date: 
August 29, 2023. 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.
August 29, 2023. 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 ReferencesElectrokinetic high pressure hydraulic system Valve for fluid control Electroosmotic flow controlled microfluidic devices Mobile monolithic polymer elements for flow control in microfluidic devices Mobile monolithic polymer elements for flow control in microfluidic devices Patent #: 6952962 InventorAssigneeApplicationNo. 10651835 filed on 08/29/2003US Classes:204/600, Electrophoretic or electro-osmotic apparatus422/103, Valve or connector structure251/129.01, ELECTRICALLY ACTUATED VALVE73/253Rotary piston or cylinderExaminersPrimary: Noguerola, AlexAttorney, Agent or FirmForeign Patent References
International ClassesG01N 27/453B01L 11/00 F16K 31/02 AbstractA valve for controlling flow of a primary fluid in a primary flow channel comprises a valve fluid channel, and a membrane of a porous dielectric material located in the channel so as to divide the channel into an inlet part and an outlet part and so that valve fluid flowing between the inlet and outlet parts flows through the said membrane. First and second electrodes are located for electrical communication with valve fluid in the inlet and outlet parts respectively of the valve fluid channel for application of an electric potential across the membrane in order to promote electro-osmotic flow of valve fluid through the membrane. A valve member can be displaced between open and closed positions as a result of valve fluid moving in the valve fluid channel through the membrane, into or out of the outlet part of the valve fluid channel, in which the valve member causes a reduction in the capacity for flow of the primary fluid in the primary flow channel when it is in the closed position compared with when it is in the open position.Field of SearchElectrophoresis or electro-osmosis processes and electrolyte compositions therefor when not provided for elsewhereElectrophoretic or electro-osmotic apparatus ELECTRICALLY ACTUATED VALVE Miscellaneous laboratory apparatus and elements, per se Pipette or other volumetric fluid transfer means Valve or connector structure |
| ||||||||||||||
