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US Patent 5308483 - Microporous filtration funnel assembly
US Patent Issued on May 3, 1994
Estimated Patent Expiration Date:
August 27, 2012Estimated 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:
August 27, 2012Estimated 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.AbstractAn in-line filter assembly is provided of a type having a housing divided into inlet and outlet chambers by a filter membrane having its periphery fluid-flow-sealed within the housing, the filter being readily disassemblable so that the filter membrane can be removed for identification or analysis of the material filtered from the fluid during use of the filter. | InventorsAssigneeApplicationNo. 936594 filed on 08/27/1992US Classes:210/232, WITH REPAIR OR ASSEMBLING MEANS73/863.23, Sieve, filter, or semipermeable membrane73/863.25, Changing feature210/238, Hand manipulable210/321.75, Planar membrane210/321.84, Planar membrane210/406, Vacuumized filtrate receiver210/445, Clamped in casing joint210/446, Axially aligned inlet and outlet210/450, Gasket within casing or spaced removable end members210/455, Receptacle and modified spacing surface or support for filter medium210/474, At upper edge of filtrate receiver210/482, At lower end or prefilt receiver422/101, Including means for separating a constituent; e.g., filter, condenser, extractor, etc.435/308.1, Means for separation or recovery of a microorganism from culture media604/406Filter or series thereof for liquid entering or leaving containerField of Search210/232, WITH REPAIR OR ASSEMBLING MEANS210/238, Hand manipulable210/445, Clamped in casing joint210/446, Axially aligned inlet and outlet210/450, Gasket within casing or spaced removable end members210/406, Vacuumized filtrate receiver210/474, At upper edge of filtrate receiver210/482, At lower end or prefilt receiver210/455, Receptacle and modified spacing surface or support for filter medium210/321.75, Planar membrane210/321.84, Planar membrane604/190, Having fluid filter604/406, Filter or series thereof for liquid entering or leaving container422/101, Including means for separating a constituent; e.g., filter, condenser, extractor, etc.73/863.23, Sieve, filter, or semipermeable membrane73/863.25Changing featureExaminersPrimary: Lithgow, Thomas M.Attorney, Agent or FirmUS Patent References2904857, 3295686, 4111807, Mouth filter for use with pipettesIssued on: 09/05/1978 Inventor: Boomus , et al.4148732, Bacteria filter unit Issued on: 04/10/1979 Inventor: Burrow , et al.4170056, Blood filter Issued on: 10/09/1979 Inventor: Meyst , et al.4251366, Adapter for laboratory filter Issued on: 02/17/1981 Inventor: Simon , et al.4357240, Disposable, one-piece filter unit Issued on: 11/02/1982 Inventor: Mehra , et al.4614585, Frangible bonded disposable filtration unit with recoverable filter Issued on: 09/30/1986 Inventor: Mehra , et al.4678576, Reusable filter unit with recoverable filter membrane Issued on: 07/07/1987 Inventor: Leoncavallo4689147, Plastic filter assembly Issued on: 08/25/1987 Inventor: Leoncavallo , et al.4826594, Portable water conditioning apparatus Issued on: 05/02/1989 Inventor: Sedman4829005, Sedimentation filtration microorganism growth culture system Issued on: 05/09/1989 Inventor: Friedman , et al.5112488, Filter membrane support and filtration funnel Issued on: 05/12/1992 Inventor: Lemonnier5141639, Vacuum filter assembly Issued on: 08/25/1992 Inventor: Kraus, et al.5200067, Device for mounting a filter element Issued on: 04/06/1993 Inventor: Sann5234585Vacuum filtration device Issued on: 08/10/1993 Inventor: Zuk, Jr. Foreign Patent References
International ClassesB01D 029/05B01D 035/02 |
