| Patents for B01D 46 - Filters or filtering processes specially modified for separating dispersed particles from gases or vapours (42,125) |
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| 01/08/1992 | EP0465424A1 Thick filterbed, process for preparing a filterlayer and filtration module |
| 01/08/1992 | EP0462227A4 Water separator for air data sensor |
| 01/08/1992 | CN2092364U Prismatic bag type dust catcher being able to catch dust continuously |
| 01/07/1992 | US5078765 Filter insert received exchangeably by a shaft along a channel |
| 01/07/1992 | US5078764 Air purification apparatus |
| 01/07/1992 | US5078763 Air filter cleaning device |
| 01/07/1992 | US5078760 Roughing cyclones cooperating with cross-flow filters |
| 01/02/1992 | EP0463437A1 Sintered bodies based on aluminium titanate, process for their production and use thereof |
| 01/02/1992 | EP0463342A2 Variable air filter arrangement for convection and ventilation air currents |
| 01/02/1992 | EP0276253B1 Pulse jet fabric filter |
| 01/02/1992 | DE4019833A1 Dust filters used to clean gases at high temps. - has filter cartridges formed of segments divided at right angles to longitudinal axis stacked on top of each other |
| 01/01/1992 | CN2091708U Bath filter |
| 01/01/1992 | CN2091707U Air washer |
| 01/01/1992 | CN1015231B Bag for removal of solid material from gases and for treatment of said gases |
| 12/27/1991 | EP0462227A1 Water separator for air data sensor. |
| 12/27/1991 | EP0382742B1 Process of guiding a stream of bulk solids in at least one circulating bed reactor and reactor installation for realising the process |
| 12/26/1991 | WO1991019898A1 Filter and process for manufacturing a filter |
| 12/25/1991 | CN1015220B Filter element in filter shell of boiler |
| 12/24/1991 | US5074896 Cartridge device for gas filtration |
| 12/24/1991 | US5074895 Intermittent drive for bag house cleaning head |
| 12/22/1991 | WO1991019557A1 Device for mounting filter bags in a filtering chamber |
| 12/22/1991 | CA2085749A1 Device for mounting filter bags in a filtering chamber |
| 12/19/1991 | DE4019198A1 Filter unit with pressure monitoring circuit - connected to filter state memory circuit |
| 12/19/1991 | DE4014153A1 Microwave cleaning of ceramic filter element - esp. of diesel exhaust gas filter to remove soot particles |
| 12/10/1991 | US5071555 Filter folded in a zig-zag configuration |
| 12/10/1991 | US5071553 Self retaining fluid filter |
| 12/10/1991 | US5071456 Air filter with radially sealing filter insert |
| 12/10/1991 | US5071290 Tank truck manhole filter |
| 12/05/1991 | DE4017844A1 Process and assembly for removal of wood dust from air - recirculates cleaned warm air |
| 12/04/1991 | EP0459972A2 Apparatus for removing solid particles from gaseous or liquid fluids |
| 12/04/1991 | EP0459307A2 Filtering device with a plurality of filtering tubes |
| 12/04/1991 | EP0459163A2 Filter candle |
| 12/03/1991 | US5069697 Cordierite as main component of crystalline phase |
| 12/03/1991 | CA1292620C Process and device for the separation of a synthesis gas/fly-ash mixture |
| 11/28/1991 | WO1991017803A1 Mobile airborne air cleaning station |
| 11/27/1991 | EP0458084A1 Filter element |
| 11/27/1991 | CN2089366U Film air filter |
| 11/27/1991 | CA2042705A1 Filter candle |
| 11/21/1991 | EP0457125A1 Separator of finely divided milling products from a gaseous stream |
| 11/21/1991 | EP0457018A1 Disposition of filter elements and separating supports as a package in a filter housing |
| 11/21/1991 | DE4016206A1 Filter support mat - is of welded wire nettings with facing interior trough-shaped sections |
| 11/19/1991 | US5066400 Self-spaced pleated filter |
| 11/19/1991 | US5066319 Block-Like Construction Encompassing Zig-Zag Folding Of Filter Material |
| 11/19/1991 | US5066318 Filter element gasket |
| 11/14/1991 | WO1991017354A1 Method and apparatus for predicting life of air filter cartridges |
| 11/14/1991 | WO1991016963A1 Reducing atmospheric pollution by automatic processing of leaking filter bags in a baghouse network |
| 11/13/1991 | EP0456083A1 Air filter choke indication device for vacuum cleaners, room filters and the like |
| 11/12/1991 | US5064598 Process and apparatus for manufacturing a pleated filter insert |
| 11/12/1991 | US5064458 Heavy duty air filter with multipurpose end seal |
| 11/12/1991 | US5064454 Filtration removal of matter from gas streams, with off-line cleaning of filters |
| 11/12/1991 | CA1291854C Arrangement of filter bags in electric vacuum cleaners |
| 11/12/1991 | CA1291853C Electric vacuum cleaner |
| 11/07/1991 | DE4105074A1 Filter esp. compressor feed air filter - having corrugated filter element with integral holder |
| 11/06/1991 | EP0454715A1 Filtration apparatus |
| 11/06/1991 | CA2041829A1 Apparatus for indicating how dirty an air filter is in a vacuum-cleaning apparatus, in a room filter, etc. |
| 11/05/1991 | US5062911 Preparation of ceramic honeycomb structure having selectively sealed channels |
| 11/05/1991 | US5062875 Air cleaner |
| 11/05/1991 | US5062873 Device at a filter hose |
| 11/05/1991 | US5062872 Air filter with horizontal filter elements |
| 11/05/1991 | US5062867 Method of retrofitting a dust collecting apparatus |
| 11/05/1991 | US5062864 Gas filter element |
| 11/05/1991 | US5062353 Heating or air conditioning equipment for the passenger compartment of a motor vehicle |
| 11/05/1991 | CA1291714C Triangular filter cartridge and apparatus |
| 10/30/1991 | EP0454346A1 Exhaust particulate filter |
| 10/30/1991 | EP0453657A2 Air filter for an electronic casing |
| 10/30/1991 | EP0426850A4 Air cleaner |
| 10/30/1991 | EP0253820B1 Filter cartridge |
| 10/29/1991 | US5061303 Snap-in filter unit |
| 10/24/1991 | DE4110117A1 Gas and fluid filter element which can be automatically exchanged - comprises gas or fluid-permeable circular section sepd. from surrounding impermeable material by impermeable margin |
| 10/23/1991 | EP0453177A1 Unattended air cleaning system for surface maintenance machine |
| 10/23/1991 | EP0453156A1 Reinforced sleeve assembly |
| 10/23/1991 | EP0452964A1 Grease extractor |
| 10/23/1991 | EP0452592A1 Filter cartridge end cap assembly and method of manufacture |
| 10/23/1991 | EP0452373A1 Matter collection system including off-line filter cleaning. |
| 10/23/1991 | CN2087092U Air dust filter with glass fibre lining |
| 10/22/1991 | US5059227 Device for filtering hot, dust-laden gases |
| 10/17/1991 | CA2040361A1 Percussion tool fluid filter apparatus |
| 10/16/1991 | EP0452191A1 Deduster with rigid filter element and purification by countercurrant blowing with a nozzle |
| 10/16/1991 | CN2086625U Device for radially wiping up foam using corrosion-resisting sillk-screen |
| 10/15/1991 | US5057821 Filter sentry apparatus |
| 10/15/1991 | US5057129 Moisture separator |
| 10/15/1991 | CA1290707C Air filtering apparatus |
| 10/14/1991 | CA2038883A1 Filter element gasket |
| 10/10/1991 | DE4011419A1 Switch lever for multichamber filter - has safety lock connected to pressure equalisation valve actuator |
| 10/09/1991 | EP0450299A1 Filtering element with folded material in ring or flat disposition |
| 10/09/1991 | EP0250417B1 Method and an apparatus for wrapping an external tape support about a filter element assembly |
| 10/03/1991 | WO1991014495A1 Method and apparatus for filtering engine exhaust |
| 10/02/1991 | EP0449162A2 Ventilated animal caging system with cage racks and filter covers including valves operable by rack |
| 10/02/1991 | EP0448876A2 Filter cartridge |
| 10/01/1991 | US5053131 Block structure; zig-zag folded walls |
| 10/01/1991 | US5053063 Dust filtering and collection system |
| 09/30/1991 | CA2036639A1 Filter cartridge |
| 09/27/1991 | WO1991014903A1 Filtering and pressure stabilising device for a variable flow-rate ventilating installation |
| 09/26/1991 | DE4009552A1 Rotary air jet assembly for cleaning tubular-shaped filters - comprises rotary air filter jets mounted on H-frame secured to central tube rotating on bearings |
| 09/26/1991 | DE4008742A1 Dust removal filter for hot gas - composed of metallic or ceramic elements assembled in a honeycomb body in a filer housing |
| 09/24/1991 | US5051118 Filtration of gases charged with paint drops |
| 09/24/1991 | US5050487 Heating/air conditioning system for a motor vehicle with absorption filter |
| 09/19/1991 | WO1991013675A1 Heavy duty air filter with multipurpose end seal |
| 09/19/1991 | DE4029804C1 Cleaning powder metallurgical paint between runs - with soluble particles sepd. out by filter housing with partition from which bag filter element is suspended |
| 09/18/1991 | EP0446422A1 Soot filter for diesel engines |