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