| 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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| 08/23/1988 | US4765889 Moving bridge filter - telescoping floating pot skimmer |
| 08/23/1988 | CA1240881A1 Waste treatment method and device |
| 08/16/1988 | US4764288 Method and system for cleansing a filter bed |
| 08/16/1988 | US4764276 To increase resin reaction efficiency in minimum substrate |
| 08/16/1988 | CA1240621A1 Device for a rotary filter |
| 08/09/1988 | US4762624 Apparatus and method for filtration and concentration of suspension |
| 08/03/1988 | EP0276352A1 Apparatus and method for filtration and concentration of suspension |
| 07/29/1988 | EP0269628A4 Electrode-drain structures for dewatering of suspensions. |
| 07/19/1988 | US4758338 Elongated housing; compressible filter |
| 07/14/1988 | WO1988004951A1 Filter apparatus and method |
| 07/05/1988 | CA1238863A1 Deep bed filter |
| 06/28/1988 | US4753726 Radially extending conduits with strainers |
| 06/21/1988 | US4752402 Settling pond separation using permeable fabric and weighting |
| 06/21/1988 | US4752392 Filtration apparatus having a plurality of filtration beds |
| 06/14/1988 | US4750999 Filter employing barrier |
| 06/08/1988 | EP0269769A1 Filtration with biogenetic silica |
| 06/08/1988 | EP0269628A1 Electrode-drain structures for dewatering of suspensions |
| 06/08/1988 | CN87108038A Dewatering device of quantitative discharge filter cake |
| 06/07/1988 | US4749479 Forcing slurry through polypropylene fabric |
| 06/01/1988 | EP0269261A1 A filter |
| 05/31/1988 | US4747945 Lightweight media depth filter |
| 05/31/1988 | US4747944 Recirculating filter system |
| 05/24/1988 | US4746431 Device for the collection of water in a granular material bed filter |
| 05/24/1988 | CA1237008A1 Pulp thickening utilizing stationary screens |
| 05/19/1988 | WO1988003433A1 Arrangement for an inlet and outlet in a rotating drum sieve |
| 05/19/1988 | DE3638250C1 Process for stabilising beer with a clarifying agent and regeneration filter therefor |
| 05/18/1988 | EP0267783A2 Filter device |
| 05/10/1988 | US4743382 Method and apparatus for separating suspended solids from liquids |
| 04/27/1988 | EP0193565A4 Apparatus for clarification of water. |
| 04/26/1988 | US4740300 For separation of water from granulated blast furnace slag, through layers of gravel |
| 04/13/1988 | EP0263580A2 Buoyant filter media |
| 04/13/1988 | CN86108262A Method and system for cleaning filter bed |
| 04/06/1988 | EP0262992A1 Improved method and system for cleansing a filter bed |
| 04/06/1988 | EP0262210A1 Adjustable ramp for dewatering device. |
| 04/05/1988 | US4735730 Vacuum actuated scraper arrangement for a drum filter |
| 04/05/1988 | US4735716 Quick-change filter cartridge and head therefor |
| 03/30/1988 | EP0261231A1 Rotating filter apparatus for separating fine particles of solids from a liquid |
| 03/24/1988 | WO1988002046A1 Material processing system |
| 03/24/1988 | WO1988002045A1 Material processing system |
| 03/24/1988 | WO1988002044A1 Material processing system |
| 03/24/1988 | WO1988001896A1 Method and apparatus for cleaning liquids, using loose filter material, which is fluidized during backwash |
| 03/18/1988 | EP0139002A4 Mobile fluid purification unit. |
| 03/15/1988 | US4731188 Adjustable ramp for dewatering device |
| 03/09/1988 | EP0259000A1 Filtering method and apparatus |
| 03/01/1988 | US4728424 For separating slurry into cake and water |
| 02/16/1988 | US4725367 Removal suspension solids from liquids |
| 02/16/1988 | US4725354 For water treatment; disposable cartridge |
| 02/04/1988 | DE3624975A1 Packed bed filter |
| 01/28/1988 | EP0238510A4 Water filtering system. |
| 01/27/1988 | CN87102894A Method and apparatus for filtering slurry |
| 01/20/1988 | EP0253367A2 Drum-filter arrangement |
| 01/19/1988 | US4720347 Method and apparatus for the filtration of a suspension by a granular filtrating layer |
| 01/13/1988 | EP0252161A1 Device for purification, particularly filtration, of a fluid or gaseous medium |
| 01/12/1988 | US4719020 Process for concentrating a suspension of microscopic particles |
| 12/22/1987 | US4714551 5/2-Way commutating valve, particularly for reverse-flush filters |
| 12/01/1987 | EP0245384A4 Back flushable filters. |
| 11/24/1987 | US4708797 Rotary disc filter element |
| 11/19/1987 | WO1987006962A1 Arrangement for liquid treatment of pulp |
| 11/19/1987 | EP0245384A1 Back flushable filters |
| 11/17/1987 | US4707257 Air/water distributor underdrain |
| 11/17/1987 | US4707256 Long service life |
| 11/04/1987 | EP0244151A2 Filter apparatus |
| 11/03/1987 | US4704206 Apparatus for continuous flow feed to disc-type rotary filters |
| 11/03/1987 | US4704202 Water filtering system |
| 10/28/1987 | EP0243091A2 Method of and apparatus for filtering a slurry |
| 10/27/1987 | US4702831 Filter for squeezing out suspensions |
| 10/21/1987 | CN87102298A Self-cleaning fluid filter |
| 10/13/1987 | US4699716 Variable-thickness sector for a rotary disc-type filter |
| 10/08/1987 | WO1987005824A1 Rotating filter apparatus for separating fine particles of solids from a liquid |
| 10/08/1987 | WO1987005823A1 Adjustable ramp for dewatering device |
| 10/06/1987 | US4698156 Stacks of sintered filter discs mounted on shaft |
| 09/30/1987 | EP0238895A2 System for removing liquid from a slurry of liquid and powdered material |
| 09/30/1987 | EP0238510A1 Water filtering system. |
| 09/30/1987 | CN87101678A System for removing liquid from slurry consisting of liquid and powder material |
| 09/16/1987 | EP0237257A2 Cartridge filter |
| 09/15/1987 | US4693836 Filter apparatus with bypass prevention |
| 09/15/1987 | US4693831 Rise-rate control of pulsed-bed granular medium filters |
| 09/09/1987 | EP0236115A2 Self-cleaning fluid filter |
| 09/09/1987 | EP0236071A2 Filtering apparatus |
| 09/02/1987 | EP0234162A1 Apparatus for the purification of water |
| 08/19/1987 | EP0232448A2 Drainage tube for a backwashable drainage tube filter installation |
| 08/18/1987 | US4687583 Controlled continuous rotation to deposit lime sludge on drum, then detaching |
| 07/08/1987 | EP0228073A2 Floating armature for dosing liquids |
| 07/02/1987 | WO1987003821A1 Device for filtration of fluid medium |
| 06/16/1987 | US4673502 Fixed filter drum and movable scraper |
| 06/16/1987 | US4673498 Automatic backwashing filter |
| 06/16/1987 | US4673493 Apparatus for supplying filtered liquid |
| 06/10/1987 | EP0225221A1 Device for feeding the openings of a fluidization grid with an unclogging gas |
| 06/04/1987 | WO1987003213A1 Back flushable filters |
| 06/02/1987 | CA1222469A1 Piping for use in liquid collection and distribution |
| 05/27/1987 | EP0223569A2 Filtering system |
| 05/26/1987 | US4668405 Downflow filter with high velocity backflush |
| 05/21/1987 | DE3540508A1 Process and device for removing dispersed and dissolved substances from liquids |
| 05/19/1987 | US4666601 Cone-shaped |
| 05/19/1987 | US4666600 Gravity operated |
| 05/14/1987 | DE3539747A1 Filter for purifying waste waters contaminated with separable or adsorbable solids or liquids |
| 05/13/1987 | EP0221565A2 An apparatus for separation of solid from liquid |
| 05/05/1987 | US4663693 Method for magnetic stabilizing of fluidal layers |
| 04/29/1987 | CN86106927A Apparatus for supplying unclogging gas to fluidised bed apparatus |
| 04/28/1987 | US4660741 Water purification system and method for a post-mix beverage dispenser |