| Patents for B01D 39 - Filtering material for liquid or gaseous fluids (24,884) |
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| 05/02/1989 | US4826519 Multilayer filter element |
| 05/02/1989 | US4825635 Carbon fiber yarn |
| 04/26/1989 | EP0313348A2 Device and method for depletion of the leukocyte content of blood and blood components |
| 04/26/1989 | EP0312687A2 Electret Filterpack |
| 04/26/1989 | EP0312595A1 Blood component separator |
| 04/26/1989 | CN1032492A Filter element and its production method |
| 04/25/1989 | US4824451 Melt-blown filter medium |
| 04/19/1989 | EP0312501A1 Filter for the purification of exhaust gases from diesel engines |
| 04/19/1989 | CN2036240U Eliminating smoke, reducing dust and energy-saving furnace chamber |
| 04/19/1989 | CN2036011U Mini-filter for water purifying of air pot |
| 04/18/1989 | US4822692 Seamless porous metal article and method of making |
| 04/18/1989 | US4821800 Composite particles having iron-containing core surrounded by chromium cladding |
| 04/18/1989 | CA1252741A1 Disposable filter for a vacuum cleaner |
| 04/13/1989 | DE3732654A1 Filter element or catalyst element and process for the production thereof |
| 04/13/1989 | DE3731888A1 Filter element or catalyst element and process for the production thereof |
| 04/12/1989 | EP0310722A1 Membrane filter tube and method of preparation and use |
| 04/11/1989 | US4819722 Metal well screen assembly with plastic end fitting and method of attaching same |
| 04/11/1989 | CA1252396A1 Molded fibrous filtration products |
| 04/11/1989 | CA1252292A1 Ceramic foam |
| 04/06/1989 | WO1989002976A1 Soot filter |
| 04/06/1989 | WO1989002776A1 Filter media for filter systems |
| 04/06/1989 | DE3732025A1 Chemisorption filter for the elimination of tobacco smoke and solid and gaseous substances from breathing air |
| 04/06/1989 | DE3729126A1 Diesel soot-particle filter and process for the production thereof |
| 04/05/1989 | EP0310310A2 Filter aid for analytical use and method for preparing the same |
| 04/05/1989 | EP0309708A1 Filter for use in a bottling cartridge for a beverage |
| 04/04/1989 | US4818317 Masking, sealing through apetures, drying, solidification, and sintering |
| 04/04/1989 | US4818257 Cylindrical mist eliminator bed element |
| 04/04/1989 | CA1251981A1 Air filter and method of material support |
| 03/30/1989 | DE3728422A1 Air filter for natural odour concentration in rooms with simultaneously allergen-free air |
| 03/29/1989 | CN1031943A Filter of depth layer type |
| 03/28/1989 | US4816328 Fabric core overcoated with polytetrafluoroethylene |
| 03/28/1989 | US4816224 Glass fibers for separation |
| 03/28/1989 | US4815963 Drainage mat with high crushing strength and waste-dump base containing said mat |
| 03/23/1989 | WO1989002305A1 Leucocyte-separating filter |
| 03/23/1989 | WO1989002304A1 Leucocyte-separating filter |
| 03/23/1989 | WO1988005335A3 Filtering apparatus for contaminated fluids |
| 03/22/1989 | EP0308098A1 Flexible filter bag and method of fabrication |
| 03/21/1989 | US4814033 Method of making a reinforced filter tube |
| 03/21/1989 | US4813410 Gas mask filter for the removal of low level ethylene oxide contaminants from air comprising dried cationic exchange resins |
| 03/16/1989 | DE3827143A1 Method for producing a biological filter element |
| 03/14/1989 | US4812283 Method of manufacture of formed article |
| 03/14/1989 | US4811790 Well bore device and method for sand control |
| 03/14/1989 | CA1251223A1 Ceramic spheroids having low density and high crush resistance |
| 03/14/1989 | CA1251124A1 Procedure to bond a layer of permeable material to a base fabric made of interlaced yarns; and felts for paper machines and filter fabrics manufactured accordingly |
| 03/08/1989 | EP0306231A2 Flexible filter element employing filtering sheets formed with bypass openings |
| 03/08/1989 | EP0305803A2 Apparatus and method for separating blood cells from erythrocyte containing body fluids and its use |
| 03/07/1989 | US4810315 Method for making a web of plastic material |
| 03/07/1989 | US4810273 Porous ceramic filter |
| 03/02/1989 | DE3819583A1 Process and composition for rendering germproof air filter materials hydrophobic |
| 03/02/1989 | DE3728028A1 Staged acidic, alkaline, neutral filter method for separating off bacteria, viruses and acidic, alkaline gaseous pollutants |
| 03/01/1989 | EP0304762A1 Particulate trap |
| 03/01/1989 | EP0304443A1 Filter construction and method for the formation of a filter construction. |
| 02/28/1989 | US4808202 Adsorptive fiber sheet |
| 02/28/1989 | US4807619 Resilient shape-retaining fibrous filtration face mask |
| 02/22/1989 | EP0303937A2 Filter of depth layer type |
| 02/16/1989 | DE3726072A1 Soldering method |
| 02/15/1989 | CN1031028A Filter consisted of refrigeratory dry materials and process for their proparation and their use, in particalar medicine |
| 02/14/1989 | CA1249972A1 Disc shaped filter element |
| 02/09/1989 | WO1989000880A1 Filter cartridge |
| 02/09/1989 | DE3814988A1 Filter for eliminating microparticles and microbial constituents of air and process for the production thereof |
| 02/08/1989 | EP0302252A2 Filter for small particles |
| 02/07/1989 | US4803025 Impregnating polymer with thixotropic refractory phosphate binder; firing to form phosphate free reduced porosity ceramic |
| 01/31/1989 | US4801621 High water absorbability |
| 01/31/1989 | US4801383 Selective twist filtration roving |
| 01/31/1989 | US4801379 Microfilter foil and method of producing same |
| 01/25/1989 | EP0300154A1 Clamping device for filter elements of stainless steel fiber packages resp. mats |
| 01/25/1989 | CN1030593A Interpenetrating polymer networks |
| 01/24/1989 | US4800190 Adsorber particles on open-cell foam |
| 01/18/1989 | EP0299035A1 Filtering apparatus for contaminated fluids |
| 01/17/1989 | US4798850 Polyolefin and halopolymer |
| 01/17/1989 | US4798615 Net woven of glass yarns |
| 01/12/1989 | DE3721436A1 Method for the production of a composite screen plate and a composite screen plate |
| 01/11/1989 | EP0298864A1 Filter comprising a material obtained by freeze-drying, preparation process and use, particularly in galenics |
| 01/10/1989 | US4797318 Wear resistant laminates, bags for vacuum cleaners |
| 01/10/1989 | US4797211 Cross flow microfilter |
| 01/10/1989 | CA1248418A1 Polymeric microfibrous filter sheet, preparation and use |
| 01/05/1989 | DE3720963A1 Process and apparatus for separating off the ash from the gas arising in the combustion of coal |
| 01/04/1989 | CN1030023A New model of filtering chamber with floating filter medium |
| 01/03/1989 | US4795668 Bicomponent fibers and webs made therefrom |
| 12/29/1988 | WO1988010146A1 Filter element for liquid chromatography |
| 12/29/1988 | DE3719419A1 Filter cartridge for a respirator mask |
| 12/28/1988 | CA1247798A Foam-containing polyurethane(urea) compositions and process for the preparation thereof |
| 12/28/1988 | CA1247795A Polyethylene moulding composition and process |
| 12/27/1988 | US4793923 Gradient density filter medium |
| 12/27/1988 | US4793922 Filter element using non-woven mat and multi finger separators |
| 12/22/1988 | DE3719415A1 Filter device and process for the production thereof |
| 12/22/1988 | DE3719233A1 Selbsttragender filterkoerper Self-supporting filterkoerper |
| 12/21/1988 | EP0295343A1 Method for producing ceramic honeycomb structural body |
| 12/20/1988 | US4791785 Removal of particulate material from a gas |
| 12/15/1988 | WO1988009770A1 Self-contained filter unit |
| 12/15/1988 | DE3817889A1 Verfahren zum herstellen von tabakrauchfiltern A process for the manufacture of tobacco smoke filters |
| 12/15/1988 | DE3717204A1 Circular-disc-shaped body consisting of fibrous material, preferably metal fibres, in particular for use as grinding and/or polishing disc, and method for its manufacture |
| 12/14/1988 | EP0294708A2 Process for the fabrication of a filtermaterial |
| 12/14/1988 | CN88103047A Porous metal bodies |
| 12/13/1988 | US4790938 Filter for removing particulate matter from fluid within a movable body |
| 12/13/1988 | US4790873 Passing melts through metal-wettable filter and medium which retains metal-non-wettable material |
| 12/08/1988 | DE3815907A1 Filter zur filterung der in den innenraum eines kraftfahrzeuges eingefuehrten luft Filter for filtering in the interior of a motor vehicle is supplied air |
| 12/06/1988 | US4789504 Electretized material for a dust filter |
| 12/06/1988 | US4789475 Water purification material, process therefor, and device for the removal of heavy metal toxins |
| 12/06/1988 | US4789140 Ceramic porous bodies suitable for use with superalloys |