| Patents for B01D 39 - Filtering material for liquid or gaseous fluids (24,884) |
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| 09/13/1989 | EP0097716B1 High bulk pulp, filter media utilizing such pulp, related processes |
| 09/12/1989 | US4866011 Applying an adhesive coating and flocking on at least one surface of a flexible porous organic polymer, impregnating with a ceramic slurry, drying and firing |
| 09/12/1989 | US4865635 Filter assembly for non-welded inflator device |
| 09/08/1989 | WO1989008087A1 Firing of ceramic honeycomb structure |
| 09/06/1989 | EP0331174A1 Leukocyte separator and method of making the same |
| 09/06/1989 | EP0330963A2 Ceramic foam |
| 09/06/1989 | EP0330709A1 Controlled draft and efficiency filter element for smoking articles |
| 09/06/1989 | CN2043825U Filter cover for raise box of experiment animal |
| 09/05/1989 | US4863656 Microporous plate and method for manufacturing the same and suction drier apparatus |
| 09/05/1989 | US4863602 Flexible filter element employing filtering sheets formed with bypass openings |
| 09/05/1989 | US4863601 Filter apparatus with hydrophilic filter material and hydrophobic support |
| 08/30/1989 | EP0330179A2 Process for producing non-woven fabrics of carbon fibers |
| 08/30/1989 | EP0330161A2 Method for the fabrication of a filter for soot particles |
| 08/30/1989 | EP0329863A1 Compacting of a metal web |
| 08/30/1989 | CN1035058A Method of making filter body formed of cellulose-spanbond nonwoven cloth |
| 08/29/1989 | US4861633 Cylindrical filter |
| 08/29/1989 | US4861481 Multi-functional filtering medium |
| 08/29/1989 | US4861353 Polytetrafluoroethylene tube |
| 08/24/1989 | WO1989007484A1 Oil coalescing filter |
| 08/23/1989 | EP0329303A1 Device and method for separating leukocytes from platelet concentrate |
| 08/22/1989 | US4859386 Method of making a water filter |
| 08/22/1989 | US4859348 Method and device for filtering oils from infusion beverages |
| 08/22/1989 | US4859340 Siliceous particles, self-bonding matrix of cellulose fiber and cationic resin |
| 08/22/1989 | US4859338 Porous steel foil with layer of shaped oxides |
| 08/16/1989 | EP0327737A2 Filter element for the separation of dusts |
| 08/16/1989 | EP0327653A1 Soot-filter |
| 08/16/1989 | EP0327603A1 Self-contained filter unit |
| 08/15/1989 | US4856204 Microporous plate and method for manufacturing the same and suction drier apparatus |
| 08/15/1989 | CA1258436A1 Mat structure for use in filtration devices |
| 08/09/1989 | EP0326939A2 Process for isolating cellulose ethers from a suspension |
| 08/09/1989 | CN2042518U Diesel fuel purifier |
| 08/08/1989 | US4855163 Method of making polyvinylidene difluoride structure |
| 08/08/1989 | US4855052 Foam-containing polyurethane (urea) compositions and process for the preparation thereof |
| 08/08/1989 | CA1258166A1 Spray dryer and operating method therefor |
| 08/02/1989 | EP0325854A1 Electret filter made of fibers containing polypropylene and poly(4-methyl-1-pentene) |
| 08/02/1989 | EP0325600A1 Process for manufacturing cermets, and composites manufactured according to this process, and the use thereof |
| 08/02/1989 | CN2042078U Defluorination apparatus for natural geothermal mineral water |
| 08/01/1989 | US4853293 Compacted metallic wire element |
| 08/01/1989 | US4853170 Process for producing press molded articles provided with channels from powdery molding compounds |
| 08/01/1989 | US4853087 Process and apparatus for producing a filter with multiple folds |
| 07/27/1989 | WO1989006567A1 Filter apparatus for filtering a liquid |
| 07/27/1989 | DE3800723A1 Soot burn-off filter for diesel engines |
| 07/26/1989 | EP0325412A2 Metal well screen assembly with plastic end fitting and method of attaching same |
| 07/26/1989 | EP0325188A2 Method for the reduction of the pore-size of a filter medium for beverages |
| 07/19/1989 | EP0324601A2 Processes for preparing electret filters |
| 07/19/1989 | CN1033942A Device and method for removing leucocyte content from blood and blood component |
| 07/13/1989 | WO1989006157A1 Filter material and two-stage device purifying water of oil, and method for making said filter material |
| 07/13/1989 | WO1989006156A1 Molecular sieve arrangement |
| 07/12/1989 | EP0323641A2 An electroconductive thermoplastic resin sheet |
| 07/12/1989 | CN2040802U Glue filter mesh |
| 07/05/1989 | EP0323117A2 Filter for liquid and method of filtering liquid |
| 07/05/1989 | EP0322932A2 A fiber filled reticulated ceramic, used as a lining in a furnace |
| 07/05/1989 | EP0322750A1 Belt filter for the filtration of solids and the like from liquids |
| 07/05/1989 | CN2040399U Fibre piece filtering material |
| 07/04/1989 | US4843700 Locking structure of wire rod for filter element |
| 06/29/1989 | DE3731889A1 Diesel soot particle filter and process for the production thereof |
| 06/27/1989 | CA1256273A1 Device and method for the production or release and separation of substances or particulate products of fluid, plastic or solid materials and use of the device |
| 06/22/1989 | DE3741764A1 Grease filter mat from a batt for vapour hoods |
| 06/21/1989 | EP0320625A2 Use of odorous products, especially in vacuum cleaners |
| 06/20/1989 | US4840838 High temperature filter felt |
| 06/20/1989 | US4840397 Impact protection device for the occupants of motor vehicles with a filter to clean the driving gas |
| 06/20/1989 | CA1255863A1 Cylindrical fibrous structures and method of manufacture |
| 06/15/1989 | WO1989005285A1 Porous ceramic shapes, compositions for the preparation thereof, and method for producing same |
| 06/15/1989 | WO1989004253A3 Breathable non-linting laminate |
| 06/15/1989 | DE3740091A1 Filtermaterial Filter material |
| 06/14/1989 | EP0320458A1 Foam ceramic for a filter for the purification of diesel engine exhaust gases |
| 06/14/1989 | EP0320457A1 Process for the partial coating of the surface of a porous ceramic body |
| 06/14/1989 | EP0320036A1 Process for the separation of ashes at the combustion of coal to produce gas |
| 06/14/1989 | EP0320033A1 Composite ceramic micropermeable membrane, process and apparatus for producing such membrane |
| 06/14/1989 | EP0319949A2 Filter element and assembly |
| 06/14/1989 | EP0319893A1 Process for manufacturing a filter for micro and ultrafiltration |
| 06/14/1989 | CN1033353A Manufacture method of folding glass fibre filter net cloth with high temp. resistance |
| 06/13/1989 | US4839049 Thermal shock resistant foam filters |
| 06/13/1989 | US4838905 Filter element and method of making a filter element |
| 06/13/1989 | US4838903 Multi-phase thick-bed filter |
| 06/08/1989 | DE3839956A1 Electret film and process for manufacturing it |
| 06/06/1989 | US4836931 Reinforced filter tube and method of making the same |
| 06/06/1989 | US4836917 Apparatus for performing separation of a solid-liquid mixture |
| 05/30/1989 | US4834876 Filtration assembly having integral heating means for maintaining the metallic material being filtered in the molten state |
| 05/30/1989 | US4834700 Method of and apparatus for forming filter element |
| 05/30/1989 | CA1254854A1 Electret process and products |
| 05/24/1989 | EP0317190A1 Filtration of fluid media |
| 05/23/1989 | US4833106 Fluid-permeable article and method for producing the same |
| 05/23/1989 | CA1254548A1 Fluid-permeable fibre matrix and a method of producing said matrix |
| 05/18/1989 | WO1989004253A2 Breathable non-linting laminate |
| 05/17/1989 | EP0316195A2 Polyallylene Sulfide nonwoven fabric |
| 05/16/1989 | US4830062 Porous heat-shrinkable tetrafluoroethylene polymer tube and process for producing the same |
| 05/10/1989 | EP0315022A2 Filtering device for blood platelet |
| 05/09/1989 | US4828930 Depositing metal particles on the interior of a rotating mold |
| 05/09/1989 | US4828574 Process for producing an additive for lubricants, as well as for aqueous heating medium and fuel systems, as well as the special use possibilities thereof |
| 05/09/1989 | US4827924 High efficiency respirator |
| 05/05/1989 | WO1989003926A1 Gravel pack for petroleum or water wells |
| 05/05/1989 | WO1989003720A1 Methods and devices for gas cleaning |
| 05/05/1989 | WO1989003717A1 Device and method for depletion of the leukocyte content of blood and blood components |
| 05/05/1989 | WO1989003716A1 Air laid filtering material |
| 05/03/1989 | EP0313920A2 Method of making filter body formed of cellulose-spinbanded non-woven cloth |
| 05/03/1989 | EP0208629B1 Process for manufacturing an inorganic membrane support for separation techniques |
| 05/03/1989 | DE3735729A1 Process for manufacturing an activated-carbon filter, and an activated-carbon filter manufactured according to the process |
| 05/02/1989 | US4826609 Filter media for filter systems |
| 05/02/1989 | US4826597 Filter assembly with removable sheet |