| Patents for F01N 1 - Silencing apparatus characterised by method of silencing (8,998) |
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| 11/04/1998 | CN1197885A Exhaust muffler for internal combustion engine |
| 11/03/1998 | US5832095 For an air distribution structure |
| 11/03/1998 | US5831223 For a motor vehicle |
| 10/30/1998 | CA2235048A1 Noise attenuator |
| 10/27/1998 | US5828013 Muffler with catalytic converter arrangement; and method |
| 10/27/1998 | US5826573 Gas flow control element |
| 10/21/1998 | CN2295050Y Sheet-type micro-porous silencer |
| 10/20/1998 | US5824972 Acoustic muffler |
| 10/20/1998 | US5824970 Marine engine silencer having internal apertured baffle and weir plate |
| 10/15/1998 | DE19714983A1 Exhaust silencer e.g. for internal combustion engine |
| 10/13/1998 | US5822439 Noise control device |
| 10/13/1998 | US5821474 For pulsing gases |
| 10/13/1998 | US5821473 Silencer and a method for forming and attaching a silencer to a blower pipe |
| 10/08/1998 | WO1998044247A1 Muffler and its manufacturing method |
| 10/08/1998 | WO1998044243A1 Flue gas cleaning |
| 10/08/1998 | DE19713442A1 Combustion engine, especially diesel engine for land and water vehicles |
| 10/07/1998 | EP0868596A1 Sound suppressor exhaust structure |
| 10/06/1998 | US5816361 Exhaust mufflers with stamp formed internal components and method of manufacture |
| 10/01/1998 | WO1998042965A1 Stamp-formed muffler having a unitary inner cartridge |
| 10/01/1998 | CA2284070A1 Stamp-formed muffler having a unitary inner cartridge |
| 09/30/1998 | CN2292904Y Double diffraction absorption energy-saving silencer |
| 09/22/1998 | US5810566 Pulse damper or acoustic outlet piece for a compressor and compressor equipped therewith |
| 09/22/1998 | US5809770 Silencer for a gas flow |
| 09/16/1998 | CN1193072A 消音装置 Silencer |
| 09/15/1998 | US5808245 Vertical mount catalytic converter muffler |
| 09/15/1998 | CA2118211C Adaptive multifrequency reactive muffler |
| 09/11/1998 | WO1998039209A2 Sound reduction method and system for jet engines |
| 09/11/1998 | CA2282744A1 Sound reduction method and system for jet engines |
| 09/03/1998 | WO1998037944A1 Pollution abating filter for internal combustion engines |
| 09/03/1998 | DE19706883A1 Exhaust gas silencer for internal combustion engined motor vehicle e.g. motorcycles |
| 09/02/1998 | EP0862012A2 Sound damping device for reducing fluid and body noise |
| 09/02/1998 | EP0861756A2 Automotive bumper and muffler combination |
| 09/01/1998 | US5801344 Sound attenuator with throat tuner |
| 09/01/1998 | US5801343 Muffler for internal combustion engine |
| 08/27/1998 | WO1998025072A3 Method and apparatus for making preforms from glass fiber strand material |
| 08/27/1998 | DE19706155A1 Noise dampening system for currents and body shell |
| 08/26/1998 | EP0859906A1 A noise attenuator for an induction system or an exhaust system |
| 08/26/1998 | EP0791131B1 Resonance exhaust silencer |
| 08/26/1998 | CN1191589A Silencer for gas flow |
| 08/19/1998 | CN1039550C Muffler |
| 08/18/1998 | CA2118780C Stamp formed muffler with hermetically sealed laminated outer shell and method of manufacture |
| 08/17/1998 | CA2197721A1 Jet noise silencer |
| 08/11/1998 | CA2112368C Noise control device |
| 08/06/1998 | DE19703414A1 Noise damper for induction pipe of internal combustion engine |
| 08/05/1998 | EP0856647A1 Muffler with stamped internal plates defining tubes and separating chambers |
| 07/30/1998 | WO1998032957A1 Flexible uncoupling joint mounted in the exhaust line of a motor vehicle engine |
| 07/30/1998 | WO1998020237A3 Improved muffler with partition array |
| 07/29/1998 | EP0855496A1 Flexible decoupling joint mounted in an exhaust system of a motor vehicle |
| 07/29/1998 | CN1188843A Exhauster with catalytic agent |
| 07/28/1998 | US5785014 Expansion chamber for two-cycle engine |
| 07/28/1998 | US5784784 For use in a high pressure, closed circuit |
| 07/21/1998 | US5783782 Multi-chamber muffler with selective sound absorbent material placement |
| 07/21/1998 | US5783780 Sound absorption structure |
| 07/15/1998 | CN2286243Y Five-inner tube & double-pyramid noise silencer |
| 07/08/1998 | EP0852050A1 Method for damping vibration and the pressure wave from a material |
| 07/08/1998 | EP0708880B1 Fishbone standardised silencers for (internal) combustion engines |
| 07/07/1998 | US5777947 Apparatuses and methods for sound absorption using hollow beads loosely contained in an enclosure |
| 07/07/1998 | US5775306 For use with a fuel pump |
| 07/07/1998 | CA2223589A1 Tunable acoustic system |
| 06/30/1998 | US5773770 Cross flow path exhaust muffler |
| 06/25/1998 | WO1998027321A1 A device and a method for sound reduction in a transport system for gaseous medium and use of the device in an exhaust system for ships |
| 06/23/1998 | US5771300 Loudspeaker phase distortion control using velocity feedback |
| 06/16/1998 | US5767459 Muffler for pneumatic devices |
| 06/16/1998 | US5766541 Method and apparatus for making preforms from glass fiber strand material |
| 06/11/1998 | WO1998025072A2 Method and apparatus for making preforms from glass fiber strand material |
| 06/02/1998 | US5760348 Noise attenuating apparatus |
| 06/02/1998 | US5758497 Apparatus for silencing and catalytic treatment of gases |
| 05/28/1998 | WO1998022703A1 Internal combustion engine |
| 05/28/1998 | WO1998022700A2 Active exhaust silencer |
| 05/26/1998 | US5758311 Vibration/noise active control system for vehicles |
| 05/20/1998 | EP0842355A2 Silencer for a gas flow |
| 05/20/1998 | CN1182169A Silencing apparatus with catalyst inside |
| 05/14/1998 | WO1998020237A2 Improved muffler with partition array |
| 05/14/1998 | DE19644089A1 Schalldämpfer Silencer |
| 05/13/1998 | EP0840841A1 Muffler with catalytic converter |
| 05/07/1998 | WO1998019056A1 Exhaust apparatus of vehicles |
| 05/07/1998 | WO1998019054A1 Exhaust muff |
| 05/06/1998 | EP0840285A2 Active noise conditioning system |
| 05/06/1998 | EP0839993A2 Multi-chamber muffler with sound absorbent material |
| 05/06/1998 | CN1180980A Noise canceling system |
| 05/05/1998 | US5748749 Active noise cancelling muffler |
| 05/05/1998 | US5748748 Apparatus and method for influencing oscillations in the passenger compartment of a motor vehicle and apparatus and method for detecting defects in a motor vehicle |
| 05/05/1998 | US5747753 Muffler for an internal combustion engine, particularly a single-cylinder diesel engine |
| 05/05/1998 | US5746986 One-piece; high speed maintenance and replacement; internal combustion engines |
| 04/30/1998 | WO1998017898A1 Sound suppressor exhaust structure |
| 04/29/1998 | EP0838973A1 Loudspeaker phase distortion control using velocity feedback |
| 04/28/1998 | US5744762 Muffler controller for use in controllable exhaust system of internal combustion engine |
| 04/23/1998 | DE19744838A1 Motor vehicle exhaust |
| 04/23/1998 | DE19737799A1 Silencer for high-pressure output of compressor in vehicle air conditioner |
| 04/22/1998 | EP0837452A2 Noise cancelling system |
| 04/22/1998 | CN1179690A Loudspeaker phase distortion control using velocity feedback |
| 04/22/1998 | CN1179526A Compressor discharge muffler for use in air cooditioner |
| 04/22/1998 | CN1179505A Whirling type waste gas filtering silencer |
| 04/21/1998 | US5740671 Balance box exhaust accelerator |
| 04/14/1998 | US5739485 Motor vehicle exhaust muffler |
| 04/14/1998 | US5739484 Exhaust muffler |
| 04/14/1998 | US5739483 Automobile exhaust noise suppressor |
| 04/14/1998 | US5738184 Muffler for a two-stroke engine |
| 04/09/1998 | WO1998014693A1 Gas flow silencer |
| 04/08/1998 | EP0558472B1 Improvements in attenuators |