Method for filtering particles from a fluid
Patent 7371329 Issued on May 13, 2008. Estimated Expiration Date: 
March 6, 2026. 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 6, 2026. 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 ReferencesMethod of creating low resistance contacts in high aspect ratio openings by resputtering Broadband wire grid polarizer for the visible spectrum Imbedded wire grid polarizer for the visible spectrum Microfabricated devices and methods Devices and methods for using centripetal acceleration to drive fluid movement in a microfluidics system for performing biological fluid assays Devices and methods for using centripetal acceleration to drive fluid movement in a microfluidics system Microfluidic devices comprising biochannels Component comprising submicron hollow spaces Component comprising submicron hollow spaces Patent #: 7026046 InventorsAssigneeApplicationNo. 11368813 filed on 03/06/2006US Classes:210/767, Separating210/800, Utilizing gravitational force359/360, Having metal layer359/486, By grid or dipoles385/132, Channel waveguide422/50, ANALYZER, STRUCTURED INDICATOR, OR MANIPULATIVE LABORATORY DEVICE422/68.1, Means for analyzing liquid or solid sample422/82.08, Fluorescence422/101, Including means for separating a constituent; e.g., filter, condenser, extractor, etc.422/104, Holder, support, housing, or hood428/212, Including components having same physical characteristic in differing degree428/220, Physical dimension specified428/304.4, Composite having voids in a component (e.g., porous, cellular, etc.)428/310.5, With gradual property change within a component428/314.2, Void shape specified (e.g., crushed, flat, round, etc.)428/314.8, Specified thickness of void-containing component (absolute or relative), numerical cell dimension or density428/315.9, Composite has more than two layers428/457, Of metal428/913, MATERIAL DESIGNED TO BE RESPONSIVE TO TEMPERATURE, LIGHT, MOISTURE, ETC.428/172, Composite web or sheet435/4, MEASURING OR TESTING PROCESS INVOLVING ENZYMES OR MICRO-ORGANISMS; COMPOSITION OR TEST STRIP THEREFORE; PROCESSES OF FORMING SUCH COMPOSITION OR TEST STRIP436/45, Utilizing a centrifuge or compartmented rotor436/46, With sample on test slide436/177, Liberation or purification of sample or separation of material from a sample (e.g., filtering, centrifuging, etc.)436/178, Including use of a solid sorbent, semipermeable membrane, or liquid extraction210/634, Liquid/liquid solvent or colloidal extraction or diffusing or passing through septum selective as to material of a component of liquid; such diffusing or passing being effected by other than only an ion exchange or sorption process422/72, Including centrifuge436/514, INVOLVING DIFFUSION OR MIGRATION OF ANTIGEN OR ANTIBODY435/6, Involving nucleic acid356/246, Fluid containers (e.g., cells or cuvettes)435/287.1Including measuring or testingExaminersPrimary: Kim, JohnAttorney, Agent or FirmForeign Patent References
International ClassesB01D 37/00B01D 35/00 B32B 5/14 B32B 3/26 G02B 5/20 G02B 27/28 AbstractMethods for filtering particles from a fluid are disclosed, wherein an array of microstructures defining respective microchannels having respective minimum widths are used to separate the fluid from particles to be filtered. The fluid flows through the minimum widths into the microchannels defined between adjacent microstructures. The particles to be filtered are prevented from passing through the respective minimum widths, resulting in filtration of those particles from the fluid. The microchannels can be provided with gradient characteristics to separate particles in the fluid according to size.Other References
Field of SearchFiltering through membrane (e.g., ultrafiltration)Removing specified material Separating Cyclonic, or centrifugal (e.g., whirling or helical motion or by vortex, etc.) Utilizing gravitational force CASING DIVIDED BY MEMBRANE INTO SECTIONS HAVING INLET(S) AND/OR OUTLET(S) ANALYZER, STRUCTURED INDICATOR, OR MANIPULATIVE LABORATORY DEVICE Means for analyzing liquid or solid sample Fluorescence Including means for separating a constituent; e.g., filter, condenser, extractor, etc. Holder, support, housing, or hood Utilizing a centrifuge or compartmented rotor With sample on test slide Liberation or purification of sample or separation of material from a sample (e.g., filtering, centrifuging, etc.) Including use of a solid sorbent, semipermeable membrane, or liquid extraction MEASURING OR TESTING PROCESS INVOLVING ENZYMES OR MICRO-ORGANISMS; COMPOSITION OR TEST STRIP THEREFORE; PROCESSES OF FORMING SUCH COMPOSITION OR TEST STRIP Composite having voids in a component (e.g., porous, cellular, etc.) With gradual property change within a component Void shape specified (e.g., crushed, flat, round, etc.) Specified thickness of void-containing component (absolute or relative), numerical cell dimension or density Composite has more than two layers Of metal MATERIAL DESIGNED TO BE RESPONSIVE TO TEMPERATURE, LIGHT, MOISTURE, ETC. Including components having same physical characteristic in differing degree Physical dimension specified Specified thickness of void-containing component (absolute or relative) or numerical cell dimension Having metal layer By grid or dipoles Channel waveguide |
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