| Patents for B01D 46 - Filters or filtering processes specially modified for separating dispersed particles from gases or vapours (42,125) |
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| 06/13/1990 | EP0373045A1 Portable personal sampler for collecting a given fraction of airborne particles |
| 06/13/1990 | DE3900973C1 Filter unit with progressively responding warning and extinguishing device |
| 06/13/1990 | CN2058109U 氧气过滤器 Oxygen Filter |
| 06/13/1990 | CN1042891A Dust collecting technology of flue gas from vertical kiln of producing cement by wet forward ejection and counter filtering process |
| 06/12/1990 | US4932988 Air purification apparatus |
| 06/12/1990 | CA1270209A1 Down flow filter panel dust collector |
| 06/07/1990 | DE3915748C1 Waste gas purificn. appts. from solid particles - comprises candle mounting plate below hood, protection plate inside in hood with central ventilation passage, etc. |
| 06/06/1990 | EP0371531A1 Filter bed combined with a centrifugal separator |
| 06/06/1990 | EP0371189A2 Hollow fibre module, process for its manufacture and apparatus for carrying out said process |
| 06/06/1990 | CA2004657A1 Individual portable sampler to take a specific fraction of suspended solids in an atmosphere |
| 06/05/1990 | US4931073 Process of flue gas conditioning applied to fabric filtration |
| 05/31/1990 | WO1990005573A1 Phase-separating element |
| 05/30/1990 | EP0370521A1 In-line filter device for compressed air |
| 05/30/1990 | EP0370222A2 Filter for the air conditioning system of a motor vehicle |
| 05/29/1990 | US4929352 Device for filters, insert for filters and filter |
| 05/29/1990 | CA1269550A1 Seamless porous metal article and method of making |
| 05/23/1990 | EP0369985A1 Regenerative particle filter for exhaust gases |
| 05/23/1990 | EP0368861A1 Method and apparatus for treating process gases. |
| 05/23/1990 | CN2057364U Atmosphere vibrating cloth bag duster |
| 05/22/1990 | US4927435 Rotating drum filter |
| 05/17/1990 | DE3838540A1 Filter cartridge, in particular for an intake air filter of an internal combustion engine |
| 05/16/1990 | EP0367993A1 Filter insert exchangeably received by a shaft in the course of a conduit |
| 05/16/1990 | CN2057112U Lamp-black filter for air exhauster in kitchen |
| 05/16/1990 | CN1042182A Cucumber mosaic virus coat protein gene |
| 05/15/1990 | US4925623 Clamping arrangement for stainless steel fiber filter elements |
| 05/15/1990 | US4925561 Composite planar and triangularly pleated filter element |
| 05/15/1990 | US4925469 Air filter for heat engines |
| 05/15/1990 | US4925468 Filter device provided in an air conditioning device |
| 05/15/1990 | US4925466 Filter cartridge assembly |
| 05/15/1990 | US4924570 Filter for cleaning exhaust gases of diesel engines |
| 05/10/1990 | DE3935656A1 Waste air filter - of endless design with multilayer structure passing through-cleaning zone |
| 05/10/1990 | DE3837439A1 Process and apparatus for loosening dust and dirt particles in filter units |
| 05/08/1990 | US4923488 Apparatus for altering the density of particles |
| 05/08/1990 | US4923484 Method and apparatus for treating exhaust gas for removal of fine particles |
| 05/08/1990 | US4922691 Separator of vaporizing oil and smoke |
| 05/03/1990 | WO1990004445A1 Device for the parallel filtration of a plurality of samples with automatic control of filtered volumes and of clogging as well as with filter indexing, and filtration method |
| 05/01/1990 | USH773 Coalescer filter unit drain device |
| 05/01/1990 | US4921609 Circular lamella clarifier |
| 05/01/1990 | US4921509 Air filtration system for ducted range hoods |
| 05/01/1990 | CA1268430A1 Filter cleaning device |
| 04/26/1990 | DE3836147A1 Clean-room ceiling |
| 04/25/1990 | EP0365167A2 Method of making motor vehicle filter elements |
| 04/25/1990 | CN2056361U Rotation friction decreasing device for dust precipitator of combined dust cleaner |
| 04/19/1990 | WO1990003836A1 Disposable air filter |
| 04/19/1990 | WO1990003831A1 Cross-flow filtration device and method of making |
| 04/18/1990 | CN2056090U Low-resistance air filter without division plate |
| 04/17/1990 | US4917862 Container having plurality of cells partially filled with disintegration-filled activated carbon particles |
| 04/17/1990 | US4917713 Low-profile air filtration module |
| 04/17/1990 | US4917712 Method and apparatus for filtering conditioned air and separating dust from reusable waste |
| 04/17/1990 | US4917591 Apparatus for curing resin impregnated in filter element |
| 04/11/1990 | EP0362589A1 Device with moving layer filters for purifying crude gas |
| 04/11/1990 | CN2055738U Dual-chamber intercommunicated densely arranged flat filtering bag dust remover |
| 04/10/1990 | US4915714 Fiber bed element and process for removing small particles of liquids and solids from a gas stream |
| 04/10/1990 | CA1267611A1 Self-cleaning filter |
| 04/05/1990 | WO1990003214A1 Vacuum cleaner filter bag assembly |
| 04/05/1990 | DE3832730A1 Shaking device for dust filters |
| 04/05/1990 | DE3832420A1 Centrifugal-force vapour precipitator |
| 04/03/1990 | US4914065 Controlling the temperature of waste gas |
| 04/03/1990 | US4913712 Filter for cleaning exhaust gases of diesel engines |
| 04/03/1990 | US4913085 Coating booth for applying a coating powder to the surface of workpieces |
| 03/28/1990 | EP0360593A2 Method of producing porous ceramic honeycomb structural bodies |
| 03/28/1990 | EP0359779A1 Compressed air carbon monoxide filter. |
| 03/28/1990 | EP0260267B1 Method and arrangement for the manufacture of filters |
| 03/28/1990 | CN2055189U Non-fabric filter core made by polyurethane end cover thermoset process |
| 03/28/1990 | CN1007320B Panel air filter |
| 03/27/1990 | CA1267057A1 Air line vapor trap |
| 03/27/1990 | CA1267019A1 Method for forming filter element and forming apparatus therefor |
| 03/22/1990 | WO1990002598A1 Filter assembly |
| 03/22/1990 | WO1990002597A1 Filter assembly and cartridge therefor |
| 03/21/1990 | EP0359408A2 Filter assembly for non-welded inflator device |
| 03/21/1990 | EP0358923A1 Process and apparatus for purifying a raw gas originating from the gasification of solids |
| 03/21/1990 | EP0358919A1 Device for heating or combustion installations |
| 03/20/1990 | US4910047 Blower, jet means, deflector |
| 03/20/1990 | US4909815 Flat elongated base; cabinet supported by base; hood |
| 03/20/1990 | US4909814 Dust filtering and collection system |
| 03/20/1990 | US4909813 Flow control device for use with porous filter tubes |
| 03/15/1990 | DE3830688A1 Pressure filter |
| 03/15/1990 | DE3830618A1 Reactor for purifying industrial exhaust gases |
| 03/14/1990 | EP0358543A1 Apparatus for separating at least two elements present in a gaseous or a liquid fluid with the aid of a filtering or adsorbing material |
| 03/14/1990 | EP0358522A2 Regenerable diesel particulate trap |
| 03/14/1990 | EP0357931A1 Pressurized gas filter |
| 03/14/1990 | EP0357928A2 Process for removing asbest dust |
| 03/14/1990 | EP0357917A1 Protective filter |
| 03/13/1990 | US4908050 Oil mist remover |
| 03/06/1990 | US4906259 Prefilter for vacuum cleaners |
| 03/06/1990 | CA1266382A1 Air inlet filter for gas turbine engine |
| 02/28/1990 | EP0356022A1 Cartridge mount for powder collector |
| 02/28/1990 | CN1007011B Improved portable individual collector for dust analysis |
| 02/28/1990 | CN1006960B Improvement on dust collecting bag |
| 02/27/1990 | US4904384 Apparatus housing a plurality of filter elements for separating contaminants from a fluid |
| 02/27/1990 | US4904378 Flat element for filtering and separation |
| 02/27/1990 | US4904288 Polypropylene yarn woven in egg-crate pattern, corrugated metal screen, reusable |
| 02/27/1990 | US4904287 Compact ceramic tube filter array high-temperature gas filtration |
| 02/27/1990 | US4904282 Pneumatic cleaning of textile impurities |
| 02/27/1990 | US4904126 Truck mounted vacuum loading apparatus |
| 02/27/1990 | US4903462 Oil mist remover |
| 02/22/1990 | WO1990001364A1 Filter cartridge |
| 02/22/1990 | WO1990001363A1 Fiber bed filter |
| 02/22/1990 | WO1990001362A1 Filter device |
| 02/22/1990 | DE3827746A1 Dust filter with filter elements |