| 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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| 06/12/1990 | US4932082 Strainer cup for pop-up drain plug |
| 06/07/1990 | DE3838931A1 Electronic lime protection filter |
| 06/05/1990 | US4931180 Self cleaning filtering apparatus |
| 05/31/1990 | WO1990005574A1 Automatic pressure filter |
| 05/30/1990 | EP0370849A1 Filtering apparatus having an ultra-sonic regeneration device, and the regeneration process |
| 05/30/1990 | EP0370521A1 In-line filter device for compressed air |
| 05/30/1990 | EP0370004A1 Filtring and sensing assembly and apparatus |
| 05/29/1990 | US4929829 Method for detecting flooding of a surface |
| 05/29/1990 | US4929352 Device for filters, insert for filters and filter |
| 05/29/1990 | US4929350 Rotary screw fish collector |
| 05/29/1990 | CA1269623A1 Apparatus for use in filtering a liquid |
| 05/23/1990 | EP0369039A1 Filter for liquid motor fuel |
| 05/17/1990 | WO1990005244A1 Horizontal removable pump for filtration systems |
| 05/17/1990 | WO1990005011A1 Water purifying method and apparatus |
| 05/17/1990 | WO1990005010A1 Filter body with tapered tortuous passageways |
| 05/17/1990 | WO1990005009A1 Liquid filter |
| 05/17/1990 | DE3838720A1 Lubricant filter for liquid lubricants |
| 05/17/1990 | DE3838063A1 Production of a tube module for membrane filtration |
| 05/17/1990 | CA2003109A1 Automatic filter press |
| 05/16/1990 | CN1007971B Magnetization treater for fluid |
| 05/15/1990 | US4925623 Clamping arrangement for stainless steel fiber filter elements |
| 05/15/1990 | US4925550 Batch-action apparatus for filtering fluid medium |
| 05/09/1990 | CN1041888A Waterflow differential electrical charging process for ores |
| 05/08/1990 | US4923603 Combined oil filter and cooler |
| 05/08/1990 | US4923602 Bi-directional flow filter |
| 05/08/1990 | US4923068 Automatic filter system |
| 05/08/1990 | US4922959 Filter arrangement for fuel tank |
| 05/03/1990 | WO1990004467A1 Drilling mud separation system |
| 05/03/1990 | WO1990004445A1 Device for the parallel filtration of a plurality of samples with automatic control of filtered volumes and of clogging as well as with filter indexing, and filtration method |
| 05/03/1990 | WO1990004443A1 Apparatus for filtering and coalescing liquids |
| 05/02/1990 | EP0366362A1 Apparatus for filtering and coalescing liquids |
| 05/02/1990 | CN1041703A Apparatus for separation of ferromagnetic materials from fluid media |
| 05/01/1990 | US4921610 Cleaning of hollow fibre filters |
| 05/01/1990 | US4921601 Component part of filter casing |
| 05/01/1990 | CA1268427A1 Filter for continuous filtering of a suspension under pressure |
| 04/26/1990 | CA2001493A1 Apparatus for filtering and coalescing liquids |
| 04/25/1990 | EP0364545A1 Process and installation for recovering oils and fats from natural products |
| 04/25/1990 | EP0364498A1 Filter units for biological sample preparation. |
| 04/25/1990 | CN1041537A Backwash filter |
| 04/24/1990 | US4919806 Cross-flow type filter system |
| 04/24/1990 | US4919801 Control system for pump cycling |
| 04/19/1990 | WO1990003846A1 Waterflow differential electrical charging process for ores |
| 04/19/1990 | DE3835326A1 Apparatus for separating off and collecting solids from a liquid stream |
| 04/18/1990 | EP0364299A2 Filtering system |
| 04/18/1990 | CN2056089U Water tap filter |
| 04/17/1990 | US4918426 Method and apparatus for sensing fluid flow volume to indicate end of filter life |
| 04/12/1990 | DE3833134A1 Device for keeping radioactive materials |
| 04/11/1990 | EP0362739A2 Filtering device |
| 04/11/1990 | CN1041117A Separating apparatus of magnetic matter in flowing medium |
| 04/10/1990 | US4915852 Oil filter assembly for a Volkswagen flat four opposed cylinder air cooled engine |
| 04/10/1990 | US4915835 Flushable fiber-filter element for filtering a fluid |
| 04/10/1990 | US4915833 Column filter using bundles of long fibers |
| 04/10/1990 | US4915831 Filter assembly featuring displaceable filter head plunger for locking into filter cartridge detent |
| 04/10/1990 | US4915597 Filter pump head assembly improvements |
| 04/05/1990 | WO1990003212A1 Apparatus for filtering and coalescing liquids |
| 04/04/1990 | EP0361217A1 Brack-wash filter |
| 04/04/1990 | EP0360973A2 Fuel filter with diaphragm pump |
| 04/04/1990 | EP0360834A1 Method of and arrangement for purifying contaminated water |
| 04/04/1990 | EP0122270B1 Separation of multi-phase systems |
| 04/04/1990 | CN2055405U Household multifunction deepened water filter |
| 04/03/1990 | US4913813 Filter spill prevention cover |
| 04/03/1990 | CA1267289A1 Process for the separation of metals from aqueous media |
| 03/28/1990 | EP0360601A1 Apparatus for filtering and coalescing liquids |
| 03/28/1990 | EP0359878A1 Filter screen assembly |
| 03/28/1990 | EP0243346B1 Filter |
| 03/28/1990 | CN2055063U Sterilization tap filters |
| 03/27/1990 | US4911847 Process for controlling the permeate composition in a rotary filtration device |
| 03/27/1990 | US4911834 Drilling mud separation system |
| 03/22/1990 | WO1990002628A1 Method and device for making filters by laser machining |
| 03/22/1990 | WO1990002597A1 Filter assembly and cartridge therefor |
| 03/22/1990 | WO1990002595A1 Filtration |
| 03/22/1990 | DE3917520A1 Doped segmental filter in cooling water flow line - is secured by reversed water flow collected in oscillated suction unit |
| 03/21/1990 | EP0359249A2 Microfiltration apparatus & method of using the same |
| 03/20/1990 | US4909932 Tubular container; movable and fixed filter |
| 03/15/1990 | DE3925198A1 Monitoring successive stages of centrifugal slurry filtration - by vibration sensor mounted on arm pivoting towards sieve surface |
| 03/15/1990 | DE3830688A1 Pressure filter |
| 03/14/1990 | EP0243384B1 Device for filtering molten metals |
| 03/08/1990 | WO1990001979A1 Pool chemical dispenser |
| 03/07/1990 | EP0356832A2 Fuel filter |
| 03/07/1990 | EP0356667A2 Fuel filter, especially for diesel engines, with electrical resistance heating |
| 03/07/1990 | EP0251840B1 Process and individual apparatus for the filtration of a liquid |
| 03/06/1990 | US4906381 Modular multi-media filtration unit |
| 03/06/1990 | US4906368 Expandable fiberglass pressure vessel having internal pipe connection |
| 03/06/1990 | US4906365 Filter for cleaning lubricating oil |
| 03/06/1990 | US4906360 Multi-stage injection molding filter |
| 03/06/1990 | US4905644 In a fluid feed system |
| 03/06/1990 | CA1266443A1 Filtration method and apparatus |
| 02/28/1990 | EP0355643A2 Process for sensing the flooding of a surface |
| 02/27/1990 | US4904397 Cooling water for heat exchanger; rotating filter, suction nozzle removing sediments |
| 02/27/1990 | US4904395 Method and apparatus for thickening fiber suspension |
| 02/27/1990 | US4904382 Filter cartridge security for locking between operating and non-operating positions |
| 02/27/1990 | US4904381 Magnetization treatment apparatus of fluid |
| 02/27/1990 | US4903798 Hydraulic apparatus for an automatic transmission |
| 02/22/1990 | DE3828417A1 Apparatus for separating off and collecting solids from a liquid stream |
| 02/20/1990 | US4902481 Multi-well filtration test apparatus |
| 02/20/1990 | US4902421 Filter device |
| 02/20/1990 | US4902409 Nozzle for screen apparatus |
| 02/20/1990 | US4901693 Interlocked remote oil filter and drain |
| 02/20/1990 | CA1266008A1 Semipermeable baffle fuel filter |
| 02/13/1990 | US4900440 Dynamic pressure filter |