| Patents for B01D 46 - Filters or filtering processes specially modified for separating dispersed particles from gases or vapours (42,125) |
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| 05/18/1989 | DE3736225A1 Chamber filter disc and membrane filter disc and process for the production thereof |
| 05/16/1989 | US4830642 Filter system with in situ cleaning of an operating filter unit |
| 05/16/1989 | US4830638 Filtration system with apparatus for altering the arrangement of electrons in particles |
| 05/16/1989 | US4829766 Method and apparatus to dispose of particulates separated-off via an exhaust gas filter of an internal combustion engine |
| 05/11/1989 | DE3737117A1 Filter device for gases, especially for air |
| 05/10/1989 | EP0315048A2 Microporous filter |
| 05/10/1989 | CN2037256U Cleaning machine for filter material in air filter |
| 05/10/1989 | CN2037198U Lampblack clarifier |
| 05/09/1989 | US4828719 Oscillating screen or filter surface |
| 05/09/1989 | US4828590 Filter arrangement |
| 05/09/1989 | US4828187 Asbestos removal |
| 05/05/1989 | WO1989003720A1 Methods and devices for gas cleaning |
| 05/03/1989 | EP0314253A1 Method and apparatus for separating fine particulates from a mixture of fine particulates and gas |
| 05/03/1989 | EP0314085A1 Air filtration system for ducted range hoods |
| 05/03/1989 | EP0313758A1 Process and device for the cooling of fine dust |
| 05/03/1989 | CN2036855U Diaphragm filter |
| 05/02/1989 | US4827154 Control system for air cleaner |
| 05/02/1989 | US4826519 Multilayer filter element |
| 05/02/1989 | US4826518 Filter assembly for a boiler filter housing |
| 05/02/1989 | US4826517 Disposable air cleaner with one piece housing |
| 05/02/1989 | US4826513 Laser smoke particulate/odor filter system |
| 05/02/1989 | US4826512 Self-cleaning air filter |
| 04/27/1989 | DE3834942A1 Filter apparatus |
| 04/27/1989 | DE3735251A1 Method and device for producing naturally refined air |
| 04/26/1989 | EP0313060A2 Inverse flow depth filter assembly |
| 04/26/1989 | CN2036444U Cloth bag dust collector |
| 04/25/1989 | US4824450 Air filter apparatus |
| 04/25/1989 | CA1253130A1 Ceramic honeycomb body |
| 04/20/1989 | WO1989003499A1 Process and installation for eliminating condensable noxious matter |
| 04/19/1989 | CN2036063U Disk air return dust filter |
| 04/18/1989 | US4822387 Inverse flow depth filter assembly |
| 04/18/1989 | US4822386 Filter replacement mechanism |
| 04/18/1989 | US4821737 Water separator |
| 04/18/1989 | CA1252742A1 Compact blower and filter assemblies for use in clean air environments |
| 04/13/1989 | DE3816245A1 Exhaust-air cleaning device |
| 04/13/1989 | DE3810545C1 Device for attaching a seal base to a filter bag support basket |
| 04/13/1989 | DE3732655A1 Heating furnace or water heater for burning solid, liquid or gaseous fuels |
| 04/12/1989 | EP0311557A2 Separation method and apparatus for carrying it out |
| 04/12/1989 | EP0310722A1 Membrane filter tube and method of preparation and use |
| 04/12/1989 | EP0310632A1 Cross-flow filtration device and method of making. |
| 04/12/1989 | CN1032407A Filter element in filter shell of boiler |
| 04/11/1989 | US4820426 Process for the processing of fluids containing suspended particles |
| 04/11/1989 | US4820320 Compact dust collector |
| 04/11/1989 | US4820319 Remote control and monitor means |
| 04/11/1989 | US4820317 Pneumatic |
| 04/11/1989 | US4820315 Vacuum loader and process for removing asbestos and other particulate material |
| 04/11/1989 | US4819549 End seal for clean room ceiling supports |
| 04/06/1989 | WO1989002977A1 Filter for the abatement of solid particles and unburned hydrocarbons entrained in the exhaust gases from internal combustion engines |
| 04/06/1989 | WO1989002976A1 Soot filter |
| 04/06/1989 | WO1989002788A1 A processing chamber and a method of preventing escape of contaminating substances therefrom |
| 04/06/1989 | WO1989002779A1 Reactor installation for countercurrent treatment of gases and bulk solids |
| 04/05/1989 | EP0310407A2 Coalescer filter unit drain device |
| 04/05/1989 | EP0207108B1 Booth for applying a powdered coating to the surface of workpieces |
| 04/04/1989 | US4818970 For removal of asbestos materials |
| 04/04/1989 | US4818396 Device for a filter |
| 04/04/1989 | US4818317 Masking, sealing through apetures, drying, solidification, and sintering |
| 04/04/1989 | US4818261 Reversed pulse cleaning filter |
| 04/04/1989 | US4818258 Filter module |
| 04/04/1989 | US4818257 Cylindrical mist eliminator bed element |
| 04/04/1989 | US4817661 Adjustable energy output/cyclic event filter cleaning control system |
| 04/04/1989 | US4817230 Dust collector |
| 03/30/1989 | DE3731620A1 Fastening of the air-filter holder of a ventilation system in a vehicle |
| 03/30/1989 | DE3731090A1 Process and apparatus for cleaning dust-laden untreated gases |
| 03/29/1989 | EP0308470A1 Process for removing dust from a dust-laden gas using a gas-permeable filter element arranged in a container. |
| 03/29/1989 | EP0167527B1 Apparatus for periodically oxidizing particulates collected from exhaust gases |
| 03/29/1989 | CN1031944A Filter device and method of operating it |
| 03/28/1989 | CA1251674A1 Apparatus and method for wrapping an external tape support about a filter element assembly |
| 03/23/1989 | DE3830991A1 Filter apparatus and method for the operation thereof |
| 03/23/1989 | DE3822443A1 Plate filter made of a pleated filter web material |
| 03/21/1989 | US4814033 Method of making a reinforced filter tube |
| 03/21/1989 | US4813985 Tensioning device for bag filters |
| 03/21/1989 | US4813984 Asbestos abatement action |
| 03/21/1989 | US4813385 General-purpose internal combustion engine |
| 03/15/1989 | EP0307234A2 Process for producing a filter element |
| 03/15/1989 | EP0236295B1 A filtering device for vehicle exhaust |
| 03/15/1989 | CN2034084U Flat bag type dust remover |
| 03/14/1989 | US4812149 Hot inert gas purging for filter blowback process |
| 03/09/1989 | WO1989001818A1 Cylindrical air filter with lightweight housing and radially directed seal |
| 03/09/1989 | DE3725242A1 Ventilation container for cleaning contaminated air volume flows for rooms providing protection against catastrophe |
| 03/08/1989 | EP0306350A1 Honeycomb structure for fluid filtration |
| 03/08/1989 | EP0306278A1 Filter for eliminating oil mist from air |
| 03/08/1989 | EP0306277A1 Oil mist remover |
| 03/08/1989 | CN2033685U Purifying apparatus for peculiar smell in air |
| 03/07/1989 | US4810272 Air inlet valve arrangement for pneumatic equipment |
| 03/07/1989 | US4810270 Separator |
| 03/07/1989 | US4810269 Portable, self contained multistage vacuum filter |
| 03/07/1989 | CA1250804A1 Moisture eliminator for air washer |
| 03/02/1989 | DE3727509A1 Filter-frame grid |
| 03/01/1989 | EP0304762A1 Particulate trap |
| 03/01/1989 | CN2033290U Mono-dust shroud fiber seperator |
| 02/28/1989 | US4808203 Dust collector |
| 02/23/1989 | DE3727233A1 Bulk-material feed and gas removal device, in particular for counterflow moving-bed filters |
| 02/23/1989 | DE3727143A1 Crank case venting filter |
| 02/23/1989 | DE3727141A1 Filter cartridge for boiler filter housing |
| 02/23/1989 | DE3726973A1 Dust filter having filter bags which hang above a preliminary separation space |
| 02/23/1989 | DE3726770A1 Filter device for filtering out readily volatile impurities from an airstream |
| 02/22/1989 | EP0304207A2 High surface area filter cartridge |
| 02/22/1989 | CN2032909U Fiber electric membrane tube coacervation composition filter |
| 02/21/1989 | US4805656 For the control of gas flow expansion |
| 02/21/1989 | CA1250107A1 Collapsible support cage for vacuum cleaner filter |