| Patents for B01D 24 - Filters comprising loose filtering material, i.e. filtering material without any binder between the individual particles or fibres thereof (8,047) |
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| 06/26/2002 | EP1216209A1 An iron powder and sand filtration process for treatment of water contaminated with heavy metals and organic compounds |
| 06/26/2002 | CN2496970Y Hydraulic automation swimming pool high-efficient circulating filtering machine |
| 06/26/2002 | CN2496533Y High-speed filter |
| 06/25/2002 | US6409944 Method for producing a filter bottom for water treatment |
| 06/20/2002 | US20020074285 Treatment unit for treating a fluid and method thereof |
| 06/19/2002 | CN2495356Y Filtering cone device of water purifying apparatus able to be cleaned layer-by-layer |
| 06/19/2002 | CN2495355Y Dual-flow, self-pressing fiber filter |
| 06/19/2002 | CN2495354Y Hydraulic force, self pressing fiber filter |
| 06/18/2002 | US6406622 Apparatus for filtering a fluid |
| 06/12/2002 | CN2494691Y Mechanical adjustment double-layer fibre bundle filter |
| 06/11/2002 | US6402963 Plurality of panels filled with granular filtering material separated by elements cast in the ground, member emdedded in the element and auxiliary devices |
| 06/04/2002 | US6398954 Multimedia backwashable filtration system |
| 05/29/2002 | CN2493272Y Automatic counter-flushing horizontal type filter |
| 05/23/2002 | WO2001079117A3 Method and apparatus for treating of water/wastewater |
| 05/22/2002 | CN2492285Y Weight for stretching fibre |
| 05/22/2002 | CN2492284Y Water-filling and-draining device for capsule |
| 05/21/2002 | CA2200292C Antimicrobial filter cartridge |
| 05/16/2002 | WO2002038511A1 Method for treating water containing manganese |
| 05/15/2002 | CN2491089Y Domestic iron and Mn water filter |
| 05/15/2002 | CN2491088Y Dual-purpose device for feeding material and medicines |
| 05/14/2002 | US6387283 For purification of scrubber water, industrial sewage, drinking water and also in the purification of chemicals |
| 05/14/2002 | US6387261 Serviceable filter with bypass |
| 05/10/2002 | WO2002036239A1 Filter sand washing method and its system |
| 05/08/2002 | CN2489851Y Filter using industrial waste residual as filter material |
| 05/07/2002 | US6383376 Method and apparatus for filtering a liquid |
| 05/07/2002 | US6383375 Water container with filter cartridge |
| 05/07/2002 | US6383372 Sequential flow filtration chamber for treatment of waste water and associated method |
| 05/07/2002 | CA2223121C Filter and hydraulic mixing assembly for water treatment |
| 05/02/2002 | WO2002034677A2 Water treatment device |
| 05/02/2002 | CA2426634A1 Water treatment device |
| 04/30/2002 | US6379549 Method for treating water incorporating a sedimentation tank and a multilayer filter operating at high speeds |
| 04/30/2002 | US6379543 Water treatment system |
| 04/25/2002 | WO2002032540A1 Deep bed filtration system |
| 04/25/2002 | US20020046965 Compact fluid cleaniing system |
| 04/24/2002 | CN1083286C Pleating apparatus |
| 04/24/2002 | CN1083285C 过滤器 Filter |
| 04/23/2002 | US6375833 Filter assembly with UV treatment, filter bypass, and clogging indicator |
| 04/18/2002 | WO2002030543A1 Continuously operable rotating drum pressure differential filter, method and systems |
| 04/17/2002 | CN1344579A Filtering device |
| 04/16/2002 | CA2201239C Filtering device |
| 04/16/2002 | CA2054371C Water conditioning apparatus and method for conditioning water |
| 04/11/2002 | WO2002028504A1 Apparatus for cleaning the surface of a slow sand filter in a filterbasin of a water treatment plant |
| 04/11/2002 | WO2002028503A1 Filter medium washing method and filter |
| 04/11/2002 | WO2001097948A3 Apparatus and method for separation fluids from solids, providing suction on the sides and/or underneath a carrier belt |
| 04/11/2002 | DE10047530A1 Filtering device used for washing out solids from a solid-liquid composition, comprises a housing, a filter bed with bulk material as filter medium, and an inlet unit for the composition to be filtered |
| 04/11/2002 | CA2423865A1 Filter medium washing method and filter |
| 04/09/2002 | US6368497 Compact mobile oil recycling system |
| 04/09/2002 | CA2337291A1 Shell tube type filter and auto-controlled heat recovery system of waste water |
| 04/04/2002 | WO2002010072A3 Process for direct filtration of wastewater |
| 04/02/2002 | US6365044 Buoyant media filter with diffuser |
| 03/28/2002 | WO2002024306A1 A device and a method for filtering a fluid |
| 03/28/2002 | US20020036177 Utilizing an air and water backwash system. |
| 03/28/2002 | US20020036173 Method and apparatus for acoustically driven media filtration |
| 03/28/2002 | US20020036164 Vertical filter |
| 03/27/2002 | EP0949947B1 High rate filtration system |
| 03/26/2002 | US6361701 Filtering waste water with radial flow from annular region through granular filter with particle sizes decreasing from inside to outside; nonclogging and efficient |
| 03/21/2002 | WO2002021908A1 Milk filtration and filter regeneration |
| 03/21/2002 | CA2419641A1 Milk filtration and filter regeneration |
| 03/20/2002 | CN2482444Y Rubber cylinder fibre filter |
| 03/20/2002 | CN1081079C Process for preparing active drinking water |
| 03/14/2002 | US20020030017 Down flow radial flow filter |
| 03/14/2002 | US20020030008 Multi-component filter design |
| 03/14/2002 | DE19655158C2 Prefabricated filter to purify rain water |
| 03/13/2002 | EP1185348A1 Filter underdrain system for backwash flow and method for measuring same |
| 03/13/2002 | CN1340029A Process for removing organic and inorganic contaminants from phenolic stripped sour water employing reverse osmosis |
| 03/12/2002 | US6354442 Filter with counter flow clearing |
| 03/07/2002 | DE19655159C2 Prefabricated filter to purify rain water |
| 03/06/2002 | CN2480038Y Water purifier |
| 03/06/2002 | CN1080131C Radial-flow fluidizable filter for fluid medium |
| 03/05/2002 | US6353200 Method for the partial fusion of objects |
| 02/28/2002 | US20020023885 Descending bed, continuously regenerating type filter with an adjustable length wash chamber |
| 02/28/2002 | US20020023871 Oriented structure for treating a fluid |
| 02/28/2002 | US20020023869 Apparatus for the purification of liquids |
| 02/28/2002 | CA2355753A1 Apparatus for the purification of liquids |
| 02/21/2002 | DE19655160C2 Prefabricated filter to purify rain water |
| 02/21/2002 | DE10030542C1 Verfahren und Vorrichtung zur Reinigung von Filtermaterial Method and apparatus for cleaning filter material |
| 02/20/2002 | CN2477249Y Gas, water counter-flushing filter head with adjustable long handle |
| 02/20/2002 | CN2477248Y Wheel-type fiber filtering machine |
| 02/20/2002 | CN1079271C Fluid treatment media support system |
| 02/13/2002 | EP1067996A4 Filter constructions and methods |
| 02/13/2002 | EP0900114B1 Fluid treatment media support system |
| 02/13/2002 | CN1335296A Method for recovering crystal from sludge |
| 02/12/2002 | CA2242156C Wastewater management system |
| 02/07/2002 | WO2002010072A2 Process for direct filtration of wastewater |
| 02/07/2002 | DE10032782C1 Cleaning device for soiled water from cleaning process has sand bed filter with flow recirculation via air/water mixture |
| 02/06/2002 | EP1177825A1 Method and device for backwashing sand bed filtration units |
| 02/06/2002 | CN1078872C Recovering treatment method for suspension in waste water from catalyst production |
| 02/05/2002 | CA2039510C Filter cleaning apparatus |
| 01/31/2002 | WO2002007857A1 Improved sand filter for water purifiers |
| 01/30/2002 | CN2474206Y Improved plastic filtering column sealing structure |
| 01/29/2002 | US6342163 Apparatus and method for sanitizing and cleaning a filter system |
| 01/24/2002 | WO2002006166A1 An oriented structure for treating a fluid |
| 01/24/2002 | US20020008060 Fine solids separator |
| 01/23/2002 | CN2472784Y Composite filting pool |
| 01/22/2002 | CA2187515C Apparatus and method for improving gas backwash in lateral underdrains |
| 01/17/2002 | WO2002004088A1 Regenerating device for sandfilter |
| 01/17/2002 | WO2001032560A3 Filtration device for liquids |
| 01/17/2002 | US20020006643 Screening sample for target nucleotide sequences; hybridize primer, incubate with enzyme, dissociate hybridization complex, detect electron transfer between electrode transfer particle |
| 01/17/2002 | US20020005377 Filter cartridge for gravity-fed water treatment devices |
| 01/17/2002 | DE10032783A1 Water filter especially suitable for swimming baths, includes built-in, conical, sand filter tray and recirculatory back flushing system |