| 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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| 08/13/1997 | EP0788822A2 Filter for liquids |
| 08/13/1997 | CN2259215Y Continuous operating float bed type sand filter |
| 08/13/1997 | CN1035598C Self-powered mechanical filter tank |
| 08/12/1997 | US5656179 Device for continuous filtration and drying of a solid suspension |
| 08/12/1997 | US5656162 Rotating filter |
| 08/12/1997 | US5656160 Counter top water filter |
| 08/06/1997 | CN2258869Y Compound filter pool |
| 08/06/1997 | CN1156415A Bypass filting |
| 08/06/1997 | CN1156060A Natural rock mineral filter for purifying water |
| 08/05/1997 | US5653944 Slurry filtration device and flue-gas desulfurization system |
| 08/05/1997 | US5653816 Method for cleaning the filter medium in a suction dryer by focusing ultrasonic beams |
| 07/30/1997 | CN2258421Y Multi-layer shaking screen machine |
| 07/30/1997 | CN2258420Y Domestic drink-water purifier with primary filter function |
| 07/24/1997 | DE19602154A1 Drinking water treatment process alternates reverse flow between two filters |
| 07/23/1997 | EP0784503A2 A filter, apparatus including the filter and a method of use of the apparatus |
| 07/23/1997 | EP0579798B1 Liquid filtration module and apparatus |
| 07/08/1997 | US5645733 Pollution control |
| 07/02/1997 | CN1035305C Floating bed filter |
| 07/01/1997 | US5643468 Method and apparatus for displacing liquor from a slurry of particulate solid material |
| 06/26/1997 | WO1997022398A1 Method and apparatus for filtering liquid or pasty substances and/or separating components therefrom |
| 06/25/1997 | EP0780650A1 Device for filtering, washing and drying a solid material-liquid mixture |
| 06/25/1997 | EP0779840A1 Gas entrainment/flotation reactor with arrangements for separating solids from liquids |
| 06/25/1997 | CN2256760Y Bells and drums compacting type soft packing high-efficiency filter |
| 06/19/1997 | DE19546387A1 Pressure filtration unit removes flocs and suspended matter in potable water treatment |
| 06/18/1997 | CN2256339Y Combined multifunctional filter element |
| 06/18/1997 | CN1151973A Deep treating and reusing technology of waste water in wire producing process |
| 06/17/1997 | US5639550 Composite particulate material and process for preparing same |
| 06/17/1997 | US5639384 Supplying gas under pressure into underdrain block submerged in process liquid, forming pocket of pressurized gas, passing gas from pocket through dispersion apertures in upper wall and through filter media to backwash |
| 06/16/1997 | CA2154593A1 Nordan 600n |
| 06/12/1997 | DE19546109A1 Operation of floating particle filter used in sewage treatment |
| 06/11/1997 | EP0778063A1 Backwash filtration device |
| 06/11/1997 | EP0777517A1 Method and apparatus for filtering edible oils |
| 06/11/1997 | EP0777516A1 Method for the physical/chemical separation of the components of a fluid |
| 06/11/1997 | CN2255872Y Filtering apparatus for septic tank |
| 06/10/1997 | US5637278 Used for filtration or ion exchanging |
| 06/04/1997 | EP0776244A1 Lateral member assembly for underdrain lateral system |
| 06/04/1997 | CN2255304Y 过滤器 Filter |
| 06/04/1997 | CN2255303Y High-efficient fiber bag-free floatation filter |
| 06/03/1997 | US5635080 Filter system with external scrubber |
| 05/29/1997 | WO1997018881A1 Reversible flow filter basin with drainage pipes |
| 05/28/1997 | EP0775512A1 Method for removing a liquid from a mixture |
| 05/28/1997 | CN1034987C Iron cage dam (or dyke) technology for purification of waste water |
| 05/27/1997 | US5632896 Diffusion, aeration, filtration |
| 05/20/1997 | US5630513 Apparatus for fractionating suspensions |
| 05/15/1997 | DE19610743A1 Prefabricated filter to purify rain water |
| 05/14/1997 | CN2254005Y Hydraulic fiber filter |
| 05/13/1997 | US5628916 Method for filtering edible oils |
| 05/13/1997 | US5628900 Water purifier having a magnetic field generation device |
| 05/13/1997 | US5628896 Apparatus for operating a filter arrangement |
| 05/08/1997 | CA2154505A1 Nordan 300n |
| 05/07/1997 | EP0771761A1 Method and installation for purifying contaminated water |
| 05/02/1997 | EP0770735A1 Underground buffer tank for storing and treating rain water |
| 05/02/1997 | EP0684865B1 Filter for fluids |
| 05/02/1997 | EP0625925B1 Filter for plastic melts containing impurities |
| 04/30/1997 | CN2253242Y Self-pressing fibre filter |
| 04/29/1997 | US5624576 Pelletized composition for treatment of storm water runoff |
| 04/29/1997 | CA2064390C Cap for underdrains in gravity filters |
| 04/23/1997 | CN2252807Y Compound filtering core of water purifier |
| 04/22/1997 | US5622458 Air lift pump for wet particulates |
| 04/16/1997 | CN1147413A High-speed active carbon-fibre filter and its use |
| 04/15/1997 | US5620663 Support plate accommodating and being integrally connected with a plurality of adjacent sample containers |
| 04/15/1997 | US5620607 Filtering fluidized bed reactor |
| 04/15/1997 | US5620598 Suction head arranged between a filtrate channel and a barometric leg of a rotating filter |
| 04/15/1997 | CA2075564C Apparatus for uniformly distributing gas and/or liquid in an underdrain lateral system |
| 04/09/1997 | CN2251432Y Oily waste water antiparticle size filtering separator |
| 04/08/1997 | US5618431 Placing in treating tank granular floating filter medium, allowing wastewater to flow through, separating and removing excess sludge by discharging specified amount of water from below filter layer in specified time |
| 04/08/1997 | US5618426 Lateral member assembly for underdrain lateral system |
| 04/08/1997 | US5618421 Underdrain filter plate installations in automatic backwash filter systems |
| 04/08/1997 | US5618419 Filter cartridge with back structure defining a weir |
| 04/01/1997 | US5615494 Apparatus for treating a filter cake |
| 03/19/1997 | EP0762920A1 Bypass filtering |
| 03/19/1997 | CN2249634Y Water purifier |
| 03/18/1997 | US5611921 Sewage dewatering process and equipment |
| 03/18/1997 | CA2017588C Method and an improved apparatus for separating solid particles from a liquid |
| 03/12/1997 | EP0673276B1 Removal of impurities |
| 03/12/1997 | EP0669848B1 A suction head arranged between a filtrate channel and a barometric leg of a rotating filter |
| 03/12/1997 | EP0667800A4 Pleated filter assembly, and the method and apparatus for making. |
| 03/12/1997 | CN2249235Y Water purifying device without changing core |
| 03/12/1997 | CN2249121Y Hand-controlled simple water purifying device |
| 03/12/1997 | CN1144781A Harnessing method for papermaking waste water |
| 03/05/1997 | EP0759891A1 Method and apparatus for water treatment |
| 03/04/1997 | CA2086349C High speed upward flow filtration apparatus |
| 02/26/1997 | CN1143533A Device for removing raked-off or screened material from liquid flowing through channel |
| 02/19/1997 | CN1143332A Water treatment device |
| 02/18/1997 | US5603987 Composite particulate material and process for preparing same |
| 02/18/1997 | US5603846 Fractional filtration method and fractional filtration apparatus |
| 02/12/1997 | CN2247045Y Filtering type water inlet pipe for water purifying |
| 02/04/1997 | US5599459 Method for sealing a traveling bridge filter backwash shoe |
| 02/04/1997 | CA2090222C Filter apparatus for machine tool coolant |
| 02/04/1997 | CA2039302C Filter cell sheet installations |
| 01/29/1997 | EP0755292A1 Apparatus and method for improving gas backwash in lateral underdrains |
| 01/28/1997 | US5597479 Electro-coalescence/magnetic separation (ECMS) system and components for removal of contaminants from water streams, including desalinization |
| 01/22/1997 | EP0754087A1 Air grid for underdrain and methods |
| 01/22/1997 | CN2245483Y Drinking water terminal filter |
| 01/21/1997 | US5595653 Microcolumn for extraction of analytes from liquids |
| 01/09/1997 | WO1997000770A1 Composite particulate material and process for preparing same |
| 01/09/1997 | WO1997000715A1 Method for the physical/chemical separation of the components of a fluid |
| 01/09/1997 | CA2196436A1 Method for the physical/chemical separation of the components of a fluid |
| 01/08/1997 | EP0556362B1 Method and device for the filtration of a liquid containing suspension particles |
| 01/07/1997 | US5591347 Single cell gas flotation separator with filter media |