| 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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| 04/28/1987 | CA1221036A1 Apparatus for cleaning filters in pressurized fluid flow systems |
| 04/23/1987 | WO1987002266A1 Filter arrangement |
| 04/09/1987 | DE3535816A1 Filter vessel and method of emptying the filter vessel |
| 04/07/1987 | US4655908 Device for cleaning liquids in sand filters |
| 03/31/1987 | US4654142 Filtering system |
| 03/26/1987 | WO1987001609A1 Process for removing water and/or other volatile impurities from lubricating oils and device for carrying out the process |
| 03/17/1987 | US4649996 Double walled screen-filter with perforated joints |
| 03/10/1987 | US4648970 Easy removal of filter cakes |
| 03/04/1987 | EP0213000A2 Method and system of cleansing a filter bed |
| 03/03/1987 | US4647415 Method of producing a filter pad |
| 02/26/1987 | WO1987001057A1 Electrode-drain structures for dewatering of suspensions |
| 02/26/1987 | WO1987001049A1 Water filtering system |
| 02/24/1987 | US4645605 Filtration with biogenetic silica |
| 02/24/1987 | US4645591 Self-cleaning fluid filter |
| 02/24/1987 | CA1218312A1 Filtration method and apparatus |
| 02/18/1987 | CN86104373A Method and system for cleansing a filter bed |
| 02/17/1987 | US4643836 Radial flow filter having air fluidizing backwash means |
| 02/04/1987 | CN86104726A Waste treatment method and device |
| 01/27/1987 | US4639315 Apparatus for mechanical purification of waste water |
| 01/13/1987 | CA1216527A1 Apparatus for removing a fiber layer from a rotating disc filter |
| 01/02/1987 | DE3522501A1 Filter table |
| 12/09/1986 | US4627923 Water treatment, hydraulic jets |
| 12/02/1986 | US4626359 Filter |
| 12/02/1986 | US4626345 Flocculation, floatation, and filtration; for drinking |
| 12/02/1986 | CA1214731A1 Filter |
| 11/25/1986 | US4624783 Apparatus for granular media filter |
| 11/25/1986 | US4624782 Filtering apparatus |
| 10/28/1986 | US4619769 Process for regenerating media filters used to filter geothermal brine |
| 10/28/1986 | US4619765 Filter bottom construction |
| 10/21/1986 | CA1212905A1 Granular media filter |
| 10/14/1986 | US4617131 Recirculating portion of backwash cleaning fluid |
| 09/16/1986 | US4612117 Aluminum alloy supporting baskets |
| 09/10/1986 | EP0193565A1 Apparatus for clarification of water. |
| 09/03/1986 | EP0192826A2 Process and apparatus for the regeneration and treatment of liquids |
| 09/03/1986 | CN86101074A Air-water counter washing process of filter tanks by using ejector air pump |
| 09/02/1986 | US4609467 Dewatering sludge; conveyor type |
| 08/27/1986 | EP0192631A2 Filter chamber of gravity filter |
| 08/26/1986 | US4608181 Water treatment |
| 08/26/1986 | US4608168 Distribution filter nozzles and filters incorporating same |
| 08/05/1986 | US4604199 Filtering column |
| 08/05/1986 | US4604197 Submerged filter filled with granular material |
| 07/29/1986 | US4602998 Endless, perforate conveyor belt for carrying liquids; dewatering sludge |
| 07/29/1986 | CA1208596A1 Conveyor belt for discharging granulated slag from a filtering installation |
| 07/23/1986 | EP0187795A1 Sector with variable thickness for a disc-type rotary filter. |
| 06/11/1986 | EP0184085A2 Filter bed |
| 06/03/1986 | US4592837 Apparatus for the filtering of solids-containing liquids |
| 06/03/1986 | US4592835 Nutsch filter |
| 06/03/1986 | CA1205390A1 Filtering apparatus |
| 05/27/1986 | US4591437 Apparatus for separating solid particles from a liquid |
| 05/27/1986 | US4591436 Apparatus for separation of suspensions from a fluid under pressure |
| 05/27/1986 | CA1205020A1 Strainer assembly for granular media filters |
| 05/20/1986 | US4589798 Drainage system |
| 05/13/1986 | US4588503 A roll filter in casing |
| 05/07/1986 | EP0180495A1 Method and apparatus for the filtration of a suspension on a granular filter bed |
| 05/07/1986 | EP0100345B1 Screen machine |
| 04/23/1986 | EP0178584A2 Apparatus for the mechanical purification of waste water |
| 04/22/1986 | US4583594 Double walled screen-filter with perforated joints |
| 04/15/1986 | US4582609 Filtration device and method |
| 04/09/1986 | EP0177315A2 Automatic backwashing filter |
| 04/02/1986 | EP0175956A2 Sand filter media and an improved method of purifying water |
| 04/01/1986 | US4579664 Adjustment of solid concentration, mixing with flocculant, and spreading on drying bed |
| 04/01/1986 | US4579659 Filter nozzle |
| 04/01/1986 | CA1202577A1 Method of filtration using semi-fluidized beds |
| 03/13/1986 | WO1986001427A1 Apparatus for clarification of water |
| 02/26/1986 | EP0172462A2 Means for separation of liquid from solid material |
| 02/05/1986 | EP0170349A1 Liquid-solid contacting apparatus and method |
| 02/04/1986 | US4568461 A slurry over a filter surface |
| 01/30/1986 | WO1986000543A1 Sector with variable thickness for a disc-type rotary filter |
| 01/02/1986 | EP0166663A1 Stream-down feeding means for rotating-disc filters |
| 12/04/1985 | EP0163531A2 Filter |
| 12/03/1985 | US4556487 Mechanism for washing filter material |
| 12/03/1985 | US4556485 At least part of casing buried in pebbles in water tank; including suction ports |
| 11/21/1985 | EP0161912A2 Improvements relating to clean water treatment |
| 11/12/1985 | CA1196581A1 Filter devices and methods |
| 11/05/1985 | CA1196277A1 Filter for separating discrete solid elements from a fluid stream |
| 10/23/1985 | EP0158943A2 Bottom for large columns |
| 10/15/1985 | US4547286 Water filtration process and apparatus having upflow filter with buoyant filter media and downflow filter with nonbuoyant filter media |
| 10/15/1985 | CA1195255A1 Filtration apparatus |
| 10/09/1985 | EP0157642A2 Filtrate discharge system for pressure filter |
| 09/25/1985 | EP0155645A2 Cartridge for water treatment apparatus |
| 09/24/1985 | CA1193979A1 Filter apparatus having filter bed back-washing means |
| 09/24/1985 | CA1193977A1 Flow-through oil/water separation filter |
| 09/18/1985 | EP0053115B1 Liquid filtering apparatus |
| 09/10/1985 | US4540487 Travelling backwash means |
| 08/28/1985 | EP0152711A2 Process for concentrating a suspension of micro-particles, apparatus for carrying out the process and applications of the process |
| 08/28/1985 | EP0152670A2 Filter |
| 08/27/1985 | US4537687 Open gravity backwash filter and method |
| 08/20/1985 | US4536287 Piping for use in liquid collection and distribution |
| 08/14/1985 | EP0151342A2 Process and apparatus for the purification of contaminated liquids by filtration |
| 08/13/1985 | CA1191794A1 Process and apparatus for high rate upflow water filtration with buoyant filter media |
| 08/07/1985 | EP0150919A2 Method and apparatus for the control of filter backwashing |
| 08/07/1985 | EP0150616A2 Filtering apparatus |
| 07/31/1985 | EP0149772A2 Pulp thickening utilizing stationary screens |
| 07/16/1985 | US4529509 Screen Machine |
| 07/16/1985 | CA1190673A1 Procedure for purifying effluent waters, particularly those produced in wood-processing industry |
| 07/02/1985 | US4526230 Double walled screen-filter with perforated joints |
| 07/02/1985 | CA1189808A1 Floculation process for particles suspended in a liquid |
| 06/25/1985 | US4525274 Filtrate discharge system for pressure filter |
| 06/25/1985 | CA1189456A1 Filter cleaning apparatus |
| 06/04/1985 | US4521315 Pulp thickening utilizing stationary screens |