| 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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| 05/13/2004 | US20040089599 Continuous filtration device with pivoting cells |
| 05/12/2004 | EP1059980B1 Antimicrobial filter cartridge |
| 05/12/2004 | CN1149123C Multi-stage water filter system |
| 05/11/2004 | US6733670 Apparatus and method for rehabilitating a traveling bridge filter underdrain |
| 04/29/2004 | WO2004035663A2 Method for preparing an ion exchange media |
| 04/29/2004 | WO2004035484A1 Portable small-scaled purified water-supplying system |
| 04/29/2004 | US20040079697 Fluid filter |
| 04/29/2004 | CA2502554A1 Method for preparing an ion exchange media |
| 04/28/2004 | CN1147872C BWR emergency core cooling system strainer |
| 04/28/2004 | CN1147344C Method and device for filtering particles from liquid |
| 04/22/2004 | US20040074836 Eductor circulated nut shell media filter |
| 04/21/2004 | EP1409109A1 Back washing valve and filtering apparatus with the same |
| 04/21/2004 | EP1216209A4 An iron powder and sand filtration process for treatment of water contaminated with heavy metals and organic compounds |
| 04/14/2004 | EP1406713A1 Distributor/collector system |
| 04/14/2004 | CN2611007Y Circulation filtering equipment for treating waste water |
| 04/14/2004 | CN1145515C 过滤器 Filter |
| 04/07/2004 | EP1152984B1 Novel method for filtering surface water with thin supernatant layer and implementing plant |
| 04/07/2004 | CN2609631Y Fluid whirlwind back-flash filter device |
| 04/06/2004 | US6716344 Liquid-solids circulating fluidized bed |
| 04/01/2004 | US20040060862 Process for direct filtration of wastewater |
| 03/31/2004 | CN1485118A Totally-enclosed wastewater cyclic utilization purification tank |
| 03/30/2004 | US6712957 Stationary bilge water filter apparatus |
| 03/25/2004 | WO2004024289A2 Method and apparatus for treating water |
| 03/25/2004 | US20040055971 Apparatus and method for separating fluids from solids provided with lateral and lower extraction through the belt |
| 03/25/2004 | US20040055944 Filtration system underdrain |
| 03/24/2004 | EP0951330B1 Method and apparatus for cleaning a filter surface |
| 03/24/2004 | CN1483501A Method for leading bachwash gas/liquid flowing to filter with filter casing |
| 03/18/2004 | WO2004022199A1 Control valve assembly |
| 03/18/2004 | US20040050762 Vertical filter |
| 03/11/2004 | US20040045903 Apparatus and methods for recycling biological waste |
| 03/10/2004 | EP1242638B8 A process for the recovery of copper from aqueous solutions containing iodinated organic compounds |
| 03/10/2004 | CN1481338A Water treatment device |
| 03/04/2004 | US20040040904 Water treatment device |
| 03/04/2004 | DE10219383A1 Filtration apparatus used to filter liquids such as water comprises container that houses filtration tank, filtration media cleansing mechanism, and mechanism for expelling liquid that has been purified |
| 03/03/2004 | CN2605051Y Non-back-flushing fiber filter |
| 03/03/2004 | CN1479645A Filter sand washing method and its system |
| 03/03/2004 | CN1478579A Method of filtering food frying oil using metal film |
| 02/26/2004 | US20040035796 Method for treating water containing manganese |
| 02/25/2004 | EP1390117A1 Media bed support grid |
| 02/25/2004 | CN1478058A Method for treating water containing manganese |
| 02/25/2004 | CN1476919A Hydrocone type water purifien |
| 02/19/2004 | WO2004014513A1 Filter device |
| 02/19/2004 | US20040031765 Milk filtration and filter regeneration |
| 02/19/2004 | US20040031762 Ozone/uv combination for the decomposition of endocrine substances |
| 02/19/2004 | US20040031743 Underdrain system |
| 02/19/2004 | DE10247450A1 Filtrationsfilter Filtration filter |
| 02/19/2004 | CA2493964A1 Filter device |
| 02/18/2004 | CN2603685Y Water inlet automatic control type water quality purifying filter |
| 02/18/2004 | CN1476344A Filter medium washing method and filter |
| 02/18/2004 | CN1475292A Fiber ball filtering device |
| 02/17/2004 | US6691413 Underdrain filtration system with stamped perforations |
| 02/12/2004 | WO2004013053A1 Method and apparatus for enhancing filter bed performance |
| 02/12/2004 | US20040026343 Prebackwashing filter |
| 02/12/2004 | US20040026303 Stationary bilge water filter apparatus |
| 02/12/2004 | US20040025961 Effluent purifying device |
| 02/12/2004 | CA2495440A1 Method and apparatus for enhancing filter bed performance |
| 02/11/2004 | CN1137748C Filtration equipment |
| 02/05/2004 | US20040020870 Performing a terminal backwash at a subfluidization washwater flow rate(s) following primary cleaning stage(s) of a backwash; maintaining subfluidization washwater flow rate(s) for a period of time; allowing backwashing to remove |
| 02/04/2004 | CN2601720Y Two-stage filtration fibre filter |
| 02/04/2004 | CN2601719Y Filter pot |
| 02/04/2004 | CN1136940C Permanganate feeder for iron filter |
| 02/03/2004 | US6685835 Method for filtering surface water with thin supernatant layer and implementing plant |
| 01/29/2004 | US20040016690 Oil-water separator for bilge containing fine suspended substances |
| 01/28/2004 | EP1384501A2 Oli-water separator for bilge containing fine suspended substances |
| 01/28/2004 | EP1383588A1 Continuous filtration device with pivoting cells |
| 01/28/2004 | CN2601122Y Gas/water patching member of filter and appts. comprising same |
| 01/28/2004 | CN1136027C Groundwater filter for producing drinking water |
| 01/22/2004 | WO2004007374A1 Filter appliance and inner container for a filter appliance |
| 01/22/2004 | US20040011720 Light bodied fluid strain system |
| 01/22/2004 | DE10231096A1 Filtervorrichtung und Innenbehälter für eine Filtervorrichtung Filter device and the inner container for a filter device |
| 01/15/2004 | WO2004005198A1 Floating media filter |
| 01/15/2004 | US20040007541 For gravity filters having multiple underdrain block laterals that employ a backwash cycle for cleaning |
| 01/14/2004 | EP1380331A1 Pleated filters |
| 01/14/2004 | EP1380330A1 Rain water treating device in combined sewage, and backwashing method therefor |
| 01/14/2004 | CN2598617Y Pressure sand filter |
| 01/14/2004 | CN2598616Y Suspension three-step filter |
| 01/14/2004 | CN2598615Y Maintenance-free water filter |
| 01/14/2004 | CN2598614Y Water filter |
| 01/14/2004 | CN1467011A Multifunctional continuous flow filtering equipment |
| 01/08/2004 | WO2004002605A1 Dual porosity filter |
| 01/08/2004 | US20040004036 High rate filter and high rate filtration method using the filter |
| 01/08/2004 | DE10224878A1 Filtereinsatz und Verfahren zu dessen Herstellung Filter element and method for its production |
| 01/08/2004 | CA2527486A1 Dual porosity filter |
| 01/07/2004 | CN2597051Y Bag-type composite fibre filter |
| 01/07/2004 | CN2597050Y Multi-layer filter |
| 01/07/2004 | CN1465423A Vertical granule flow dust remover |
| 01/07/2004 | CN1465421A Gas back-flushing method for filter pool |
| 01/07/2004 | CN1465420A Wine and water filter |
| 01/06/2004 | US6673324 Process and apparatus for the removal of dust in a reaction zone |
| 01/02/2004 | EP1135199B1 Slow sand filter for use with intermittently flowing water supply and method of use thereof |
| 01/01/2004 | US20040000512 Filter having a media retaining plate |
| 12/31/2003 | CN2595431Y Negative pressure automatic reverse rinsing filter |
| 12/31/2003 | CN1132654C 用于间歇式流动供水的慢砂过滤器及其使用方法 Intermittent flow slow sand filter and method of use of water for |
| 12/25/2003 | US20030234216 Filtrating filter |
| 12/24/2003 | WO2003105987A1 Water treatment device and water treatment method |
| 12/24/2003 | CN2593878Y Back-flushing horizontal dinas filter |
| 12/24/2003 | CN2593877Y Filtering cap |
| 12/23/2003 | CA2294500C Leukocyte-removing filter medium |
| 12/18/2003 | WO2003104588A1 Filtration installation for filtering the water of a water pool |
| 12/18/2003 | WO2003103800A2 Filter cartridge and process for the production thereof |