| Patents for B01D 35 - Filtering devices having features not specifically covered by groups , or for applications not specifically covered by groups; Auxiliary devices for filtration; Filter housing constructions (28,776) |
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| 10/03/1989 | US4871455 Filter assembly with lockable lug means |
| 09/28/1989 | DE3808602A1 Device for a filter |
| 09/27/1989 | EP0334639A1 Filter Device |
| 09/27/1989 | EP0334527A2 Slime control for primary filtration systems |
| 09/26/1989 | US4869816 Transmission fluid filter joint |
| 09/26/1989 | CA1261931A1 Electrical devices containing conductive polymers |
| 09/21/1989 | DE3807828A1 Arrangement for a filter device |
| 09/21/1989 | DE3807827A1 Arrangement for filter, insert for filter and filter |
| 09/20/1989 | CN2044513U Wire winded filter with plastic coating |
| 09/19/1989 | US4867879 Pipeline sieve with a suction removal device |
| 09/19/1989 | US4867874 Device for filtering water from an overflowing swimming pool, using an accumulating tank acting as a gravity filter |
| 09/19/1989 | US4867873 Frier incorporating filtering mechanism |
| 09/19/1989 | US4867196 Pool chemical dispenser |
| 09/19/1989 | US4867095 Differential pressure indicator |
| 09/14/1989 | DE3807275A1 Apparatus for pressure dewatering of aqueous sludges |
| 09/14/1989 | DE3739153C1 Vorrichtung zur Ermittlung des Beginns eines Verfalls von bewegten,fluessigkeitsgeschmierten Teilen Device for determining the start of a decay of moving, parts fluessigkeitsgeschmierten |
| 09/13/1989 | EP0332167A1 Filtered stop |
| 09/12/1989 | US4865749 Indoor swimming pool maintenance, cyclone separator, ozone treatment |
| 09/12/1989 | US4865731 Pre-filled fuel filter for internal combustion engines |
| 09/12/1989 | US4865727 New and used oil filter container with used filter removing means |
| 09/12/1989 | US4864988 Lubricating arrangement for a reciprocating piston internal combustion engine |
| 09/08/1989 | WO1989007972A1 Method and apparatus for removing liquid from permeable material |
| 09/07/1989 | DE3806208A1 Filter arrangement |
| 09/07/1989 | DE3805659A1 Control of the liquid feed of the reversible flow filter of a mining machine in underground use |
| 09/06/1989 | EP0330651A1 Filter for hydraulic systems having packing with constant side action for the screw-on cartridge unit and having a glogging indicator responding to differentiated pressure |
| 09/06/1989 | CN1035252A Magnetic equipment for separating and filtering |
| 09/05/1989 | US4863599 Filter arrangement |
| 09/05/1989 | US4863591 Inline filter |
| 09/05/1989 | CA1259034A1 Filter element |
| 08/31/1989 | DE3805276A1 Filter arrangement for radioactive materials |
| 08/31/1989 | DE3805249A1 Filter having measurement of fouling |
| 08/30/1989 | EP0330569A1 Spin-on filters with grooved casing or the like |
| 08/30/1989 | EP0330513A2 Fluid filter |
| 08/29/1989 | US4861966 Method and apparatus for electrically heating diesel fuel utilizing a PTC polymer heating element |
| 08/29/1989 | US4861498 Backwash system for filter-thickeners |
| 08/29/1989 | US4861496 Electro-dewatering method and apparatus |
| 08/29/1989 | US4861478 Removable fuel tank filter |
| 08/29/1989 | US4861474 Fuel filter coupling |
| 08/29/1989 | US4861469 Fuel tank dewatering apparatus |
| 08/29/1989 | US4861467 System for removing contaminants from an oil tank in a hydraulic device |
| 08/24/1989 | WO1989007482A1 Modular plastics pressure vessel |
| 08/23/1989 | EP0329562A1 Process for the treatment of liquids such as water, especially swimming pool water, and device and installation for carrying it out |
| 08/23/1989 | CN2043131U 液体过滤器 Liquid Filter |
| 08/22/1989 | US4859336 Filtering device for dispensing and filtering from samples |
| 08/22/1989 | US4859335 Fluid filtering systems |
| 08/22/1989 | US4859328 Twist on disposable filter |
| 08/16/1989 | EP0327715A1 Disposable filter |
| 08/15/1989 | US4857191 Filter device |
| 08/15/1989 | US4857189 Filter cartridge with a lugged concentric closure portion |
| 08/10/1989 | DE3820206C1 Process for monitoring of automatically operated plate filter presses |
| 08/09/1989 | EP0326939A2 Process for isolating cellulose ethers from a suspension |
| 08/09/1989 | EP0262151A4 Filter pump head assembly. |
| 08/08/1989 | US4855044 Purification of oils containing solid matters in suspension |
| 08/02/1989 | EP0325712A1 Disposable filter with a double supporting grid |
| 08/02/1989 | CN2041973U High-efficiency vacuum oil filter |
| 08/01/1989 | US4853125 Fluid chamber having a tubular filter and a securing recess for mounting the same |
| 08/01/1989 | US4853123 Completely sealed fuel filter and method of making same |
| 08/01/1989 | US4853120 Axial reverse flow filter assembly for fluids |
| 08/01/1989 | US4853013 Filtering structure for a vent device and device including said structure |
| 07/27/1989 | WO1989006572A1 Nozzle for screen apparatus |
| 07/27/1989 | WO1989006568A1 Pump for filtration systems |
| 07/25/1989 | US4851136 Using fiber bundles compressed by flexible waterproof membrane |
| 07/25/1989 | US4851118 Fuel filter for motor vehicle |
| 07/25/1989 | US4851117 Filter device |
| 07/20/1989 | DE3800613A1 Apparatus for treating water |
| 07/19/1989 | EP0324025A1 Electrofilter apparatus and process for preventing filter fouling in crossflow filtration |
| 07/19/1989 | CN1033942A Device and method for removing leucocyte content from blood and blood component |
| 07/18/1989 | US4849113 Continuous polymer filter |
| 07/18/1989 | US4849105 Apparatus for removing solid particles from cooling water |
| 07/18/1989 | US4849061 Method of making plastic filter units having a welded cellulose filter |
| 07/18/1989 | CA1257549A1 Two-layer fluid filter with spacer |
| 07/13/1989 | WO1989006220A1 Water purification system |
| 07/12/1989 | EP0323701A1 Fluid filter apparatus |
| 07/11/1989 | US4846967 Apparatus for reclaiming contaminated oil |
| 07/11/1989 | EP0312590A4 Universally-adaptable pool water filter structures. |
| 07/06/1989 | DE3743508A1 Process for filtering solids particles out of a fluid, in particular serving as a coolant and/or lubricant, from machine tools, and cleaning device for carrying out the process |
| 07/05/1989 | EP0323117A2 Filter for liquid and method of filtering liquid |
| 07/05/1989 | EP0322753A2 Backwash system for filter-thickeners |
| 07/05/1989 | EP0322750A1 Belt filter for the filtration of solids and the like from liquids |
| 07/05/1989 | EP0322649A2 Process and apparatus for degassing and filtering liquids |
| 07/05/1989 | CN1033574A Air filtration system for ducted range hoods |
| 07/04/1989 | US4844806 Multiple-disc-filters |
| 07/04/1989 | US4844793 Fuel heating type fuel filter device |
| 07/04/1989 | US4844704 Fuel pump assembly |
| 06/29/1989 | WO1989005686A1 Device for separation of ferromagnetic materials from fluid media |
| 06/29/1989 | WO1989005685A1 Fuel filter and separator |
| 06/28/1989 | EP0321712A1 Apparatus for filtering an addition of a reagent |
| 06/27/1989 | US4842737 Filter assembly with an expandable shell |
| 06/27/1989 | CA1256396A1 Cleaning of conductive membrane electrode in electrochemical cell |
| 06/21/1989 | EP0321104A2 Filter with self-actuating rotating backwash selector |
| 06/21/1989 | CN2039663U Device for sepaprating oil from water |
| 06/15/1989 | WO1989005184A1 Procedure and means for filtering and homogenizing liquid substances |
| 06/15/1989 | DE3740689A1 Plate filter with replaceable filter plate |
| 06/13/1989 | US4839064 Siphon usable below grade; efficient |
| 06/13/1989 | US4839048 Container for pressurized fluid |
| 06/13/1989 | US4839041 Magnetic oil strainer |
| 06/13/1989 | CA1255611A1 Mechanically raked bar screen with conveyor system having elastomeric rakes |
| 06/07/1989 | EP0319518A2 Oil filter for the purification of lubricating oil |
| 06/07/1989 | EP0318832A2 Filtering device |
| 06/06/1989 | US4837385 Applying electromagnetic force field |