| Patents for B08B 15 - Preventing escape of dirt or fumes from the area where they are produced; Collecting or removing dirt or fumes from that area (8,431) |
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| 07/09/1991 | US5030258 Mist recovery apparatus |
| 07/02/1991 | US5027694 Variable air flow eddy control |
| 07/02/1991 | CA1285499C Air purifier |
| 06/27/1991 | WO1991008821A1 Negative pressure filtration device |
| 06/18/1991 | US5024246 Apparatus for protecting ceiling work area from dispersal of asbestos fibers |
| 06/05/1991 | EP0429927A2 Extraction system for exhaust gas of motor vehicles |
| 06/04/1991 | US5021095 Process for removing asbestos and the device for removing the same |
| 05/29/1991 | DE3939063A1 Leg mounted fume cupboard with apertured internal partition - comprising lap separating vertical and inclined partitions and frontal air inlet ensuring transverse air flow |
| 05/28/1991 | US5018418 Apparatus for cutting laminated sheet material |
| 05/22/1991 | CN2077333U Constant-volume automatic ash ejector without escape |
| 05/21/1991 | US5017197 Glove bag and method of use |
| 05/21/1991 | US5016314 Asbestos-containing materials removal assembly |
| 05/15/1991 | EP0426688A1 Focussed ventilation procedure and focussed ventilation means. |
| 05/14/1991 | US5015243 Means for removing smoke from an operative site |
| 05/08/1991 | DE3936815A1 Work-table for semiconductor processing clean room - controls air flow vertically on to table to prevent air turbulence |
| 05/02/1991 | EP0424865A2 Removal of dioxins and furans |
| 04/24/1991 | EP0423785A2 Method for removal of sprayed-on asbestos and apparatus therefor |
| 04/24/1991 | CN2075556U Feed proportioning pot exhausting hood |
| 04/23/1991 | US5009685 System for improving the work environment in a contaminated room |
| 04/18/1991 | WO1991004805A1 An asbestos-containing materials removal assembly and method |
| 04/17/1991 | CN2075150U Precipitating blackboard eraser |
| 04/16/1991 | CA1282937C Fume control in strand casting of free machining steel |
| 04/09/1991 | US5005470 Portable work station |
| 04/03/1991 | CN2074216U Serial filter unit of fume |
| 04/02/1991 | US5004483 Particulate abatement and environmental control system |
| 03/21/1991 | WO1991003322A1 Method and apparatus for removing solvent vapours |
| 03/19/1991 | US5000221 Flow control system |
| 03/05/1991 | USH895 Filtered inflow and emergency HEPA exhaust during asbestos removal |
| 03/05/1991 | US4996999 Material handling apparatus and method |
| 03/05/1991 | CA1280930C System for exhausting fumes from residential garages |
| 02/28/1991 | DE3927063A1 Ventilating system e.g. for asbestos disposal - has two multi-stage ventilation units connected with inner space of building across monitor and signal response units |
| 02/27/1991 | CN2071976U Gas curtain type gas purifier |
| 02/26/1991 | US4995914 Conveying wastes from hermetically sealed removal zone to collection tanks; wetting, depressurization, filtration |
| 02/21/1991 | WO1991001821A1 A ventilation system |
| 02/21/1991 | WO1991001692A1 Device for use in the discharge of fumes from an operating site |
| 02/19/1991 | US4993313 Control system for doors of a negative air pressure enclosure |
| 02/12/1991 | US4991314 Fluid flow apparatus and process |
| 02/12/1991 | CA1280026C Laboratory work station with controllable environment |
| 02/07/1991 | WO1991001184A1 Material handling apparatus and method |
| 02/07/1991 | DE3925941A1 Air lock to chamber contaminated by asbestos dust - has progressively changing pressures and cleansing equipment in sub-divisions |
| 01/31/1991 | DE3923829A1 Suction extraction hood for laser cutting and sputtering unit - has inclined nozzles to direct curtain of gas to focus of laser beam and esp. neutralise and remove dangerous reaction products |
| 01/30/1991 | CN1048940A Micro computor controlling system for pulse cleaner |
| 01/29/1991 | CA1279522C Clean air cabinet |
| 01/17/1991 | DE3922536A1 Suction device for dust and chippings - has telescopic vertical rails for adjusting height of dust bag |
| 01/10/1991 | DE4004723C1 Double-sided fume cupboard - has box-shaped housing with two internal exhaust ducts, etc. |
| 01/08/1991 | US4982605 Air flow monitor and temperature compensating circuit therefor |
| 01/01/1991 | US4981581 Dust collection hood for sand reclaimer, cooling, and blending rotary drum |
| 12/27/1990 | EP0404070A1 Mist recovery apparatus |
| 12/12/1990 | EP0401436A1 Process and device for removing cut objects |
| 12/12/1990 | EP0401291A1 Texture removal apparatus |
| 11/21/1990 | CN2065957U Gravitating jet type industrial bug dust sweeping vehicle |
| 11/07/1990 | EP0395730A1 Cooking apparatus ventilation system. |
| 11/06/1990 | CA1275847C Fume hood |
| 10/18/1990 | WO1990011844A1 Suction device |
| 10/17/1990 | CN2064010U Dust-collecting and slag-removing apparatus |
| 10/03/1990 | CN2063065U Dustless pneumatic polisher |
| 10/03/1990 | CN2063045U Table-type duster set |
| 10/02/1990 | US4960143 Containment apparatus |
| 09/27/1990 | DE4004717A1 Dust extraction system for furniture factory - has jet injectors installed at intervals in main duct |
| 09/12/1990 | CN2061867U Pressing in type dedusting chimney |
| 09/11/1990 | US4955244 Operating apparatus for clean room |
| 08/16/1990 | DE3931142A1 Atmos. pollution redn. e.g. of sprayed oil from metal processing - sucks particles into pivoting hood and through filter |
| 08/14/1990 | US4948946 Electric soldering iron with directed air flow for fume dissipation |
| 08/14/1990 | US4947510 Vacuum box for collecting small particles |
| 08/09/1990 | WO1990008842A1 Process for preventing the formation of flue gases in metallurgical processes and during the transport of molten metal from a metallurgical vessel to casting vessels and device for transporting molten metals from a metallurgical furnace to a casting vessel |
| 08/08/1990 | EP0380603A1 Focussed ventilation procedure of a work spot and a focussed ventilation means |
| 08/06/1990 | CA2009309A1 Method of preventing fume production during metallurgical processes and when transporting molten metal from a metallurgical vessel to casting and apparatus for transporting moltenmetal from a metallurgical furnace to a casting vessel |
| 07/26/1990 | DE3901859A1 Stabilised swirl flow |
| 07/18/1990 | EP0377942A1 Dust collection device |
| 07/17/1990 | US4942284 Laser cutting apparatus provided with a gas evacuation device |
| 07/13/1990 | WO1990007991A1 An exhausting device |
| 07/13/1990 | CA2045154A1 Exhausting device |
| 07/05/1990 | DE3914725C1 Exhaust gas disposal for fuel-burning rail vehicle - has inverted suction trough following track with neck-forming slot along bottom, vertical exhaust pipe leading into tube with cowled grid |
| 06/28/1990 | DE3841842A1 Device for sucking off gaseous harmful substances |
| 06/27/1990 | EP0375104A1 Bag construction for handling hazardous materials and the like |
| 06/27/1990 | CN2058625U Combination device for removing welding fume |
| 06/26/1990 | US4936198 System for decontaminating a polluted-air region |
| 06/19/1990 | US4934256 Fume hood ventilation control system |
| 06/14/1990 | WO1990006191A1 Apparatus for use in and a method of removing asbestos |
| 06/14/1990 | WO1990006190A1 Apparatus for use in and a method of removing asbestos |
| 06/14/1990 | WO1990006188A1 Texture removal apparatus |
| 06/13/1990 | EP0372054A1 Focussed ventilation procedure for a work spot and apparatus used in the procedure. |
| 06/12/1990 | US4932098 Grooming aid for collecting debris |
| 06/08/1990 | CA2004577A1 Apparatus for use in and a method of removing asbestos |
| 06/03/1990 | CA2004484A1 Apparatus for use in and a method of removing asbestos |
| 05/29/1990 | US4929261 HEPA filter module |
| 05/29/1990 | US4928581 Negative air control unit and closure structure |
| 05/29/1990 | US4928402 Fluid flow apparatus and process |
| 05/29/1990 | US4928348 Method and apparatus for removing and collecting dust |
| 05/15/1990 | US4926293 Lighting and air freshener fixture |
| 05/15/1990 | CA1268988A1 Industrial exhaust ventilation system |
| 05/08/1990 | US4923251 Apparatus for removing asbestos and like materials from a surface |
| 05/08/1990 | US4922806 Doors for negative air pressure enclosure |
| 05/03/1990 | WO1990004744A1 A method and an apparatus for ventilation of working plants |
| 04/24/1990 | CA1268074A1 Adjustable support for smoke- or fume-exhausters and the like |
| 04/18/1990 | CN1041329A Metering feed valve |
| 04/17/1990 | US4916992 Apparatus for cutting laminated sheet material |
| 04/12/1990 | DE3833860A1 Device for emptying generators of waste in the form of powder and/or chips |
| 04/04/1990 | CN2055486U 同步配水装置 Synchronous water distribution system |
| 04/04/1990 | CN1007424B Coating hood with air flow guide for minimizing deposition of coating compound on finish of containers |