| Patents for B01D 33 - Filters with filtering elements which move during the filtering operation (10,149) |
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| 08/15/1989 | US4857193 Floating chicane system for liquid-solid separation equipment |
| 08/15/1989 | US4856204 Microporous plate and method for manufacturing the same and suction drier apparatus |
| 08/10/1989 | WO1989007003A1 Thickener |
| 08/09/1989 | EP0326939A2 Process for isolating cellulose ethers from a suspension |
| 08/09/1989 | EP0326610A1 Vibrating filter apparatus |
| 08/03/1989 | DE3802301A1 Filter apparatus, in particular for the treatment of industrial waste waters |
| 08/03/1989 | DE3801396A1 Disc filter |
| 08/02/1989 | EP0325910A1 Improved sample filtration device |
| 08/01/1989 | US4853116 Device for collecting and discharging solid matter |
| 07/27/1989 | DE3800980A1 Method and apparatus for disposing of paint, which cannot be unstuck or are difficult to unstick, from wet-painting installations and paint-spray booths and other industrial sludges from effluent treatment plants or other purification plants |
| 07/26/1989 | EP0324923A1 Method and agent for preventing plugging of suction roll of paper machine |
| 07/25/1989 | US4851135 Apparatus and method for filtering a fluid |
| 07/25/1989 | US4851119 Machine for pressing and dewatering or filtering |
| 07/18/1989 | US4848224 Press |
| 07/18/1989 | CA1257551A1 Apparatus for the recovery of living organisms on the rotary filters of water pumping stations |
| 07/18/1989 | CA1257550A1 Gravity belt thickener and belt press combination |
| 07/12/1989 | EP0323477A1 A filter |
| 07/05/1989 | EP0322439A1 Arrangement at rotating filters for improved filtrate discharge. |
| 07/05/1989 | CN2040398U Rotary internal-filtering radiation type continuous filter |
| 07/04/1989 | US4844799 Filtration apparatus having spaced-apart driving members for changing a size of a treatment zone |
| 07/04/1989 | US4844794 Plate-type filter |
| 07/04/1989 | US4844789 Pressure vessel with rotating disk |
| 06/29/1989 | DE3742790A1 Filtration system |
| 06/28/1989 | CN1033507A Inner-drum radiation-type hydraulic vacuum continuous filter |
| 06/27/1989 | US4842749 Inversion tube press |
| 06/27/1989 | US4842722 Pressure sorter |
| 06/27/1989 | CA1256387A1 Rotary vacuum filters with a horizontal filtration plane |
| 06/20/1989 | US4840047 Multiscreen pressure diffuser |
| 06/20/1989 | CA1255949A1 Washing of papermaking pulp stock |
| 06/14/1989 | EP0319564A1 Rotating filter with outer filtrate conduits. |
| 06/13/1989 | US4837944 Process for the formation and drying of filter cake |
| 06/13/1989 | CA1255630A1 Device for removing screened or sifted material from liquid flowing in a gutter |
| 06/13/1989 | CA1255610A1 Polymeric basket frame for a traveling water screen |
| 06/06/1989 | US4836922 Vibrating filter apparatus |
| 06/06/1989 | US4836919 Device for removing waste material screened or filtered out of liquid flowing throgh a channel |
| 06/06/1989 | US4836917 Apparatus for performing separation of a solid-liquid mixture |
| 06/06/1989 | US4836915 High flow capacity barrier type screening apparatus |
| 05/31/1989 | EP0317771A1 Effective diffuser/thickener screen backflushing |
| 05/30/1989 | US4834884 Pressure device and seal for filter belt machines |
| 05/30/1989 | US4834878 Apparatus for separating liquid from sludge |
| 05/30/1989 | US4834875 Two stage liquid filtraton apparatus |
| 05/30/1989 | CA1254732A1 Drilling mud comprising a high surface area magnetite concentrate |
| 05/24/1989 | EP0316997A2 System and method for monitoring and/or controlling liquidsolid separation processes |
| 05/24/1989 | EP0316570A2 Screen drum and method of manufacturing same |
| 05/24/1989 | DE3738746A1 Sieve basket and method for its production |
| 05/23/1989 | US4832851 Proteins |
| 05/23/1989 | US4832850 Method and device for mass transport and separation through selective barriers |
| 05/23/1989 | US4832843 Apparatus for filtering fluid medium |
| 05/18/1989 | WO1989004293A1 Filter band press with preliminary liquid extraction device |
| 05/17/1989 | CN2037631U Rotary spray and absorption type compound dust remover |
| 05/16/1989 | US4830761 Removing water and particulates by venturi suction from bottom, filtering, recirculating |
| 05/16/1989 | US4830750 Filter belt arrangement |
| 05/16/1989 | US4830746 Device for separating solids and intermixed liquids from industrial waste |
| 05/10/1989 | EP0315359A2 Method and apparatus for discharging a disc filter |
| 05/09/1989 | US4828689 Purifier screen of non-welded manufacture |
| 05/09/1989 | CA1253811A1 Device for extracting the liquid phase of a suspension |
| 05/03/1989 | EP0313553A1 Rotary disc filter |
| 05/03/1989 | DE3836064A1 Verfahren zum abtrennen von ton aus ultrafeiner kohle und zur anschliessenden entwaesserung der kohle sowie vorrichtung zur durchfuehrung des verfahrens A method for disconnecting from ton of ultrafine coal and subsequent dehydration of the coal and apparatus for performing the method |
| 05/02/1989 | US4826607 Filter cake |
| 05/02/1989 | US4826595 Apparatus for separating flowable constituents from a substance mixture |
| 05/02/1989 | US4826017 Vibrating screen |
| 04/25/1989 | US4824581 Flocculants |
| 04/18/1989 | US4822488 Vacuum discharge assembly for rotary drum filters |
| 04/18/1989 | US4822486 Rotary self-cleaning strainer |
| 04/18/1989 | US4821536 Rotating drum end seal |
| 04/18/1989 | CA1252738A1 Drip feeding device for rotary disc filters |
| 04/12/1989 | EP0311526A1 Endless filter press |
| 04/12/1989 | EP0310859A1 Device for removing liquid or fibrous substances from a filtering band |
| 04/12/1989 | CN2035652U Slurry material dehydrating device |
| 04/11/1989 | US4820407 Solids screens |
| 04/11/1989 | US4820400 Introducing free charge before filtration with undewaxed oil |
| 04/06/1989 | WO1989002777A1 Trough-shaped filter plate for rotary pressure filters |
| 04/05/1989 | EP0309502A1 Method for the cleaning of the filter plates in a suction dryer. |
| 04/05/1989 | CN1032113A Equipment for detecting dehydrating slurry flow on pressure net band filter |
| 04/04/1989 | US4818415 Method and apparatus for removing liquid from permeable material |
| 04/04/1989 | US4818401 Rotary filtration device |
| 04/04/1989 | US4818400 Cyclone and filter belt apparatus for dewatering |
| 03/30/1989 | DE3829177A1 Disc thickener |
| 03/30/1989 | DE3829176A1 Disc thickener |
| 03/28/1989 | US4816225 Dropping pieces directly into heated liquid sulfur |
| 03/28/1989 | US4816169 Rotary |
| 03/28/1989 | CA1251741A1 Rotary screen |
| 03/22/1989 | EP0307700A2 Disc concentrator |
| 03/22/1989 | EP0307699A2 Disc concentrator |
| 03/22/1989 | EP0100751B1 Dewatering method |
| 03/21/1989 | US4814093 Rotatable filter assembly and method of operating same |
| 03/21/1989 | US4814076 Self-cleaning filter for insertion into a pressurized pipe |
| 03/16/1989 | DE3830344A1 Process and apparatus for waste water purification |
| 03/16/1989 | DE3816214A1 Drehsieb Rotary screen |
| 03/16/1989 | DE3729103A1 Apparatus for the solid-liquid separation of sludges by gravitation |
| 03/14/1989 | US4812231 Self cleaning rotating fine polishing filter screen apparatus |
| 03/08/1989 | EP0305394A1 Arrangement for liquid treatment of pulp. |
| 03/07/1989 | US4810393 Heating, centrifuging, filtration |
| 03/07/1989 | US4809791 Removal of rock cuttings while drilling utilizing an automatically adjustable shaker system |
| 03/01/1989 | EP0304968A1 Belt filtering device |
| 03/01/1989 | EP0304833A2 Cross-flow type filter system |
| 03/01/1989 | EP0304630A2 Bucket wheel |
| 02/23/1989 | WO1989001359A1 Vibrating filter apparatus |
| 02/21/1989 | CA1250238A1 Horizontal tray belt filter (thickener) |
| 02/15/1989 | EP0303310A1 Method and apparatus for refining oils or fats |