Multiwell filter plate vacuum manifold assembly
December 5, 2008. 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 ReferencesImmunological analysis apparatus Apparatus for use in radioimmunoassays Microtest plates Device for conducting microbiological radiorespirometric assays Supporting and filtering biochemical test plate assembly Apparatus for nucleic acid quantification Well-type diagnostic plate device Patent #: 4797259 InventorsAssigneeApplicationNo. 280170 filed on 12/05/1988US Classes:422/101, Including means for separating a constituent; e.g., filter, condenser, extractor, etc.210/341, Individually controlled for removal with common receiver210/406, Vacuumized filtrate receiver210/416.1, With pump, gas pressure, or suction source210/455, Receptacle and modified spacing surface or support for filter medium210/474, At upper edge of filtrate receiver210/477, Resting on internal stop or surface422/948, For multiple samples, e.g., multi-well filtration [B01L 3/00C6D]435/288.5, Including means for fluid passage between compartments (e.g., between wells, etc.)436/178Including use of a solid sorbent, semipermeable membrane, or liquid extractionExaminersPrimary: Richman, Barry S.Assistant: Kummert, Lynn M. Attorney, Agent or FirmInternational ClassG01N 001/14AbstractA filtration system for handling an array of filter wells which are open at the top and closed by a filter membrane at the bottom. The system includes a manifold chamber defined by side and bottom walls and having a support for the wells which carries the filter membranes above the bottom walls so that filtrate may be drawn through the membranes. A vacuum fitting is connected to the chamber so that a low pressure source may be applied thereto, and a sealing sheet extends over the wells and having holes aligned with the open tops of the wells so that when the low pressure is applied to the chamber, filtrate may be drawn through the membrane.Field of SearchMiscellaneous laboratory apparatus and elements, per seIncluding means for separating a constituent; e.g., filter, condenser, extractor, etc. Container In holder or container having special form 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 Individually controlled for removal with common receiver Vacuumized filtrate receiver With pump, gas pressure, or suction source Receptacle and modified spacing surface or support for filter medium At upper edge of filtrate receiver Resting on internal stop or surface Alternate filters and traps in series Plural traps SAMPLE, SPECIMEN, OR STANDARD HOLDER OR SUPPORT (E.G., PLATES OR SLIDES) Fluid containers (e.g., cells or cuvettes) |
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