| Patents for B01D 29 - Filters with filtering elements stationary during filtration, e.g. pressure or suction filters, not covered by groups; filtering elements therefor (33,527) |
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| 03/21/1990 | EP0359249A2 Microfiltration apparatus & method of using the same |
| 03/21/1990 | EP0358952A1 Sieve grid, especially a sieve for rain water |
| 03/20/1990 | US4909950 Circulating through a ceramic filter |
| 03/20/1990 | US4909937 Tubular filter enclosed in housing |
| 03/20/1990 | US4909932 Tubular container; movable and fixed filter |
| 03/20/1990 | US4909929 Interlocking clamping system |
| 03/20/1990 | US4908896 Backflushing pressure diffuser screens |
| 03/15/1990 | DE3829936A1 Method for dehumidifying a filter cake |
| 03/14/1990 | EP0358543A1 Apparatus for separating at least two elements present in a gaseous or a liquid fluid with the aid of a filtering or adsorbing material |
| 03/14/1990 | EP0358281A2 Liquid manure injector |
| 03/14/1990 | EP0243384B1 Device for filtering molten metals |
| 03/13/1990 | US4908130 Automobile gasoline impurities removal apparatus |
| 03/13/1990 | US4908082 Washing with oil wax solvent, rinsing, drying, applying epoxy adhesive, curing |
| 03/08/1990 | WO1990001983A1 Sieveplate |
| 03/08/1990 | EP0348463A4 Gravel pack for petroleum or water wells. |
| 03/07/1990 | EP0356815A2 Method for lowering the melt viscosity of aromatic polycarbonates, aromatic and/or araliphatic polyesters |
| 03/07/1990 | EP0251840B1 Process and individual apparatus for the filtration of a liquid |
| 03/07/1990 | CN1040239A Wave screen plate & manufacturing methods |
| 03/06/1990 | US4906373 Multiple filter elements with movable flushing assembly |
| 03/06/1990 | US4906369 Apparatus for dewatering sludge and similar substances |
| 03/06/1990 | US4906367 Lint strainer for washing machine drains |
| 03/06/1990 | US4906365 Filter for cleaning lubricating oil |
| 03/06/1990 | US4906362 Arrangement in membrane filter |
| 03/06/1990 | US4906360 Multi-stage injection molding filter |
| 03/06/1990 | US4906357 Filter system having multiple filter elements and back flushing assemblies |
| 03/06/1990 | CA1266443A1 Filtration method and apparatus |
| 03/01/1990 | DE3829360A1 Apparatus for separating off solids from liquids |
| 02/28/1990 | EP0356415A2 Backflushing pressure diffuser screens |
| 02/28/1990 | EP0355643A2 Process for sensing the flooding of a surface |
| 02/28/1990 | EP0355530A1 A method and a device for screening and treating pulp |
| 02/28/1990 | EP0355400A2 Filter medium for cake forming filtering operations |
| 02/28/1990 | EP0355285A2 Suspension separator |
| 02/28/1990 | CN1006959B Method of liquid level equilibrium filtration |
| 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 | US4904384 Apparatus housing a plurality of filter elements for separating contaminants from a fluid |
| 02/27/1990 | US4904380 Precoat filter assembly |
| 02/27/1990 | US4904378 Flat element for filtering and separation |
| 02/22/1990 | DE3920097A1 Back-flushing device for filtration appts. - comprising central stand pipe with revolving nozzle for cleaning medium at top |
| 02/22/1990 | DE3841426C1 Drive of a pivotable flap for the fluid-tight closing of a band-filter apparatus |
| 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 | US4902427 Filter for removing heavy metals from drinking water |
| 02/20/1990 | US4902421 Filter device |
| 02/20/1990 | US4902420 Segmented filter disc with slotted support and drainage plate and support spacer |
| 02/20/1990 | US4902418 Element having a porous wall |
| 02/20/1990 | US4902409 Nozzle for screen apparatus |
| 02/20/1990 | US4901417 Method of finishing screen plates |
| 02/20/1990 | CA1266008A1 Semipermeable baffle fuel filter |
| 02/14/1990 | EP0354846A1 Screen for the purification and classification of a pulp suspension |
| 02/14/1990 | EP0354317A1 Filtering device |
| 02/14/1990 | CN1006820B Double cylinder screen |
| 02/13/1990 | US4900441 Small filter and method of its manufacture |
| 02/13/1990 | US4900440 Dynamic pressure filter |
| 02/13/1990 | US4900434 Apparatus for continuous filtration of fluids |
| 02/13/1990 | US4900430 Screen cleaning in CIL and CIP systems |
| 02/13/1990 | CA1265753A1 Sieves for scrubbers and in their method of manufacture |
| 02/08/1990 | WO1990000923A1 Quick change oil filter system |
| 02/08/1990 | DE3818972A1 Filter insert for a solids filter |
| 02/07/1990 | EP0353422A1 Process and apparatus for filtration |
| 02/07/1990 | EP0353340A1 Filtering device for purifying cooling lubricants |
| 02/07/1990 | EP0353284A1 Nozzle for screen apparatus |
| 02/07/1990 | CN1006681B Filtration apparatus |
| 02/06/1990 | US4898671 Filtering device for the separation of liquids and solids |
| 02/06/1990 | US4898665 Screens for paper pulp purifiers |
| 01/31/1990 | EP0352404A1 Filter element |
| 01/31/1990 | CN1039188A 流体过滤器 Fluid filter |
| 01/30/1990 | US4897194 Liquid separating apparatus |
| 01/30/1990 | US4897188 Filtering device |
| 01/30/1990 | US4897186 Fluid filter |
| 01/30/1990 | US4896783 Container and cap assembly |
| 01/30/1990 | CA1265066A1 Multiple-disc type filters |
| 01/30/1990 | CA1265065A1 Filter apparatus and method |
| 01/25/1990 | WO1990000435A1 Method of cleaning particles from a filter and a filter for use hereby |
| 01/25/1990 | WO1990000434A1 Filters |
| 01/23/1990 | US4895706 Multi-well filter strip and composite assemblies |
| 01/23/1990 | US4895655 Filtration apparatus |
| 01/23/1990 | US4895648 Filter cover for a purification insert in a water treatment device with a hollow tube |
| 01/23/1990 | CA1264545A1 Multiple-use molten metal filters |
| 01/17/1990 | EP0350884A2 Water filtering device with a filter element |
| 01/17/1990 | CN2051130U High-pressure filtering device |
| 01/16/1990 | US4894158 Porous filter element with undulations |
| 01/16/1990 | US4894156 Hose construction, coupling arrangement therefor and method of making the same |
| 01/16/1990 | US4894155 Disposable filter assembly |
| 01/11/1990 | WO1990000069A1 Apparatus and method for the autotransfusion of blood |
| 01/11/1990 | DE3822661A1 Filter apparatus |
| 01/10/1990 | EP0350338A2 Filter element and method of manufacture therefore |
| 01/10/1990 | EP0350248A1 Apparatus for treating photographic process waste liquor and method therefor |
| 01/10/1990 | EP0349744A2 Slit tube filter |
| 01/10/1990 | CN2050779U Filter for colloid and liquid materials |
| 01/09/1990 | US4892665 Porous bags mounted on frames can be filled with material, pressed between moveable platens, and dumped alternately; continuous processing |
| 01/09/1990 | US4892657 Filtration |
| 01/09/1990 | CA1264304A1 Method for screening or fractionation |
| 01/04/1990 | DE3921369A1 Tubular support body for cartridge-like filter elements |
| 01/03/1990 | EP0348463A1 Gravel pack for petroleum or water wells |
| 01/03/1990 | CN2050431U Taper type molten object filter |
| 01/03/1990 | CN2050345U Three-ways water clarifier |
| 01/03/1990 | CN1038409A Internal vortex filter |
| 01/03/1990 | CN1006281B Self-cleaning fluid filter |
| 01/02/1990 | US4891134 Sample filtration device |