| Patents for B01D 39 - Filtering material for liquid or gaseous fluids (24,884) |
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| 11/30/1988 | EP0293122A2 Porous metal bodies |
| 11/30/1988 | EP0292888A2 Separation process for solid particles of different size from viscous liquids |
| 11/30/1988 | CN87101551A Production method of high-temp. foamed ceramic filter plate |
| 11/29/1988 | US4788100 Air permeable plastic foam incorporated in non-woven needle felt substrate |
| 11/29/1988 | US4787949 Method of manufacturing highly water absorbent pleated filter laminate |
| 11/23/1988 | EP0292294A2 Cylindrical filter |
| 11/23/1988 | EP0291704A1 Catalytic effective layer of filter material for Dieselsoot-filter |
| 11/23/1988 | CN88102165A Conical element for filtering and separation |
| 11/22/1988 | US4786603 Coagulation testing |
| 11/15/1988 | US4784813 Depositing aqueous fiber mixture onto porous form from separate loading chambers |
| 11/10/1988 | DE3813264A1 Process and apparatus for purifying waste waters arising in dental treatments |
| 11/08/1988 | US4783261 Rigid filter plate and method for producing same |
| 11/08/1988 | US4783260 Folded overlapping net forms flat bag; automobiles |
| 11/03/1988 | WO1988008463A1 Improved fibers and filters containing said fibers |
| 11/03/1988 | DE3804884A1 Synthetic bricks and process for the production of the same |
| 11/03/1988 | DE3712875A1 Filter medium for an industrial filter |
| 11/01/1988 | CA1243963A1 Molded nonwoven shaped articles |
| 10/26/1988 | EP0288071A2 Artificial stones and process for their production |
| 10/26/1988 | EP0288070A2 Clay-containing material and method for its preparation |
| 10/26/1988 | EP0287917A2 Purification of liquids with treated polyester fibers |
| 10/26/1988 | EP0287910A2 Filter, especially a coffee filter, and method for making the same |
| 10/18/1988 | US4778602 Alkali solubilizing humic and fulvic acids in peat, precipitating by quaternary amine |
| 10/18/1988 | CA1243159A1 Vinylidene fluoride resin split yarn, process for production thereof and filter comprising the same |
| 10/11/1988 | US4777152 Porous silicon carbide sinter and its production |
| 10/11/1988 | US4777069 Three-dimensional; large surface area; fiber orientation |
| 10/06/1988 | WO1988007403A1 Ceramic foam filter |
| 10/05/1988 | EP0285376A2 Nonwoven fabric and method of manufacture |
| 10/05/1988 | CN88101382A Ceramic foam filter and process for preparing same |
| 09/28/1988 | EP0283520A1 Polyphenylene sulfone fibers and a method for their production |
| 09/27/1988 | US4774132 Graft polymers with high surface tension for use as filters |
| 09/27/1988 | CA1242430A1 Catalyzed diesel exhaust particulate filter |
| 09/20/1988 | US4772540 Applying photoresist, etching, electroplating metal, hardening alloy |
| 09/20/1988 | US4772443 Thermally formed filter |
| 09/14/1988 | EP0137791B1 Use of a porous ceramic body for the filtration of metals |
| 09/14/1988 | CN87101781A Method of manufacture of formed article |
| 09/07/1988 | WO1988006480A1 Filter construction and method for the formation of a filter construction |
| 09/07/1988 | WO1988006412A1 Ultra-high filtration filter |
| 09/07/1988 | EP0281275A2 High efficiency respirator |
| 09/07/1988 | EP0280695A1 Ceramic filter for filtering molten metal |
| 09/06/1988 | US4769158 Molten metal filtration system using continuous media filter |
| 08/31/1988 | CN88101118A Filter assembly for filtering contaminated liquids |
| 08/30/1988 | US4767426 Membrane filter tube and method of preparation |
| 08/23/1988 | US4766036 Process for producing porous fibers from orientable olefin polymers having cation-containing, pendent reactive side-groups and the resultant product |
| 08/23/1988 | US4765915 Using an aqueous wet-laid lofted composite sheet of heat fusible polymer, reinforcing fibers and binder |
| 08/23/1988 | US4765833 Porous ceramic structure and method of filtering aluminum |
| 08/23/1988 | US4765812 Thermoplastic or thermosetting binder and mixture of coarse and fine fibers |
| 08/23/1988 | US4765805 Method and apparatus for removing dust and gas pollutants from waste gases, particularly waste gases produced in the manufacture of optical waveguide preforms |
| 08/17/1988 | EP0278059A2 Process for making a filter |
| 08/17/1988 | CN87210994U Granular medium filter |
| 08/16/1988 | US4764277 Pulp slurry separator with parallel slots; scraper blade to prevent clogging |
| 08/11/1988 | WO1988005838A1 Method of manufacturing molded articles |
| 08/09/1988 | CA1240110A1 Bicomponent fibers and webs made therefrom |
| 08/03/1988 | EP0276795A2 Filtering device for polluted liquids |
| 08/03/1988 | EP0276270A1 Method for fabricating moulds made of porous silicone nitride for pressure casting. |
| 08/03/1988 | CN87205440U Air filtering net |
| 08/02/1988 | US4761323 Soot filters; refractory fibers and coatings |
| 08/02/1988 | US4761231 Tubular fluid filter |
| 08/02/1988 | CA1239880A1 Pleated filter and method and apparatus for fabricating same |
| 07/28/1988 | WO1988005335A2 Filtering apparatus for contaminated fluids |
| 07/27/1988 | EP0275819A2 Labyrinth-type filter for the dielectric fluid of electro-discharge machines |
| 07/27/1988 | EP0275372A1 Soot filter for a diesel engine |
| 07/26/1988 | US4760038 Ceramic composition |
| 07/26/1988 | US4759782 Intermediate fibrous layer having specific pore size |
| 07/26/1988 | CA1239530A1 Porous sintered glass with large open pore volume |
| 07/21/1988 | DE3700680A1 Filling material, which contains fibre balls, in particular for quilts or as upholstering material |
| 07/20/1988 | EP0274970A1 Yarn made from carbon fibres |
| 07/19/1988 | US4758460 Air filter |
| 07/19/1988 | US4758453 Textile substrate for bio-transformation and phase separation |
| 07/19/1988 | US4758272 Porous metal bodies |
| 07/14/1988 | DE3644665A1 Process for separating mixtures of oil and water |
| 07/12/1988 | CA1239021A1 Monolithic refractory honeycomb filter for molten metals |
| 07/06/1988 | EP0273892A2 Sludge Filter |
| 07/05/1988 | CA1238863A1 Deep bed filter |
| 06/29/1988 | EP0272842A2 Filtration membranes |
| 06/29/1988 | EP0272841A2 Filtration media |
| 06/29/1988 | EP0272798A1 Barrier products |
| 06/29/1988 | EP0167535B1 Flexible air premeable non-woven fabric filters |
| 06/28/1988 | US4753776 Separating red blood cells from plasma, low pressure filtration |
| 06/28/1988 | US4753730 Bands or strands formed into webs, wadding, sheets |
| 06/28/1988 | US4753728 Charcoal bonded by polyethylene |
| 06/28/1988 | CA1238481A1 Method and apparatus for manufacturing an electret filter medium |
| 06/22/1988 | EP0271836A2 Filter for removing smoke and toner dust in electrophotographic/electrostatic recording apparatus |
| 06/22/1988 | CN87201676U Filter cloth for plate-frame type filter presses |
| 06/21/1988 | US4752396 Multi-strand wound filter with variant cross sectional density |
| 06/16/1988 | WO1988004194A1 Method of manufacturing molded and formed filters |
| 06/16/1988 | DE3641208A1 Air filter |
| 06/15/1988 | EP0270990A1 Regenerable filter for exhaust gases of an internal-combustion engine |
| 06/14/1988 | US4751007 Using ceramic filter with inner layer of smooth spherical particles |
| 06/14/1988 | CA1237859A1 Hollow fiber filter medium and process for preparing the same |
| 06/09/1988 | DE3640953A1 Chemisorption filter compositions for separating off occupied space odours, preferably tobacco smoke |
| 06/08/1988 | EP0270510A2 Methods for producing a metallic element and metallic element therefrom |
| 06/08/1988 | EP0269864A1 Filtration device with wetted filtering elements |
| 06/08/1988 | EP0269769A1 Filtration with biogenetic silica |
| 06/08/1988 | CN87215040U Soft plastic mesh filter piece |
| 06/07/1988 | US4749671 Inorganic refractory powder support; inorganic fibers |
| 06/07/1988 | US4749496 Filtration through open cell foam containing active powdered materials |
| 06/07/1988 | US4749348 Apparatus for manufacturing an electret filter medium |
| 06/07/1988 | CA1237678A1 Filter element and its production |
| 06/02/1988 | WO1988003972A1 Barrier products |
| 06/01/1988 | EP0269462A2 Adsorptive sheet |