| Patents for F01N 1 - Silencing apparatus characterised by method of silencing (8,998) |
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| 08/28/1997 | WO1997031181A1 Muffler for an internal combustion engine |
| 08/27/1997 | EP0791131A1 Resonance exhaust silencer |
| 08/26/1997 | US5661272 For reducing the sound level of exhaust gases |
| 08/21/1997 | DE19605540A1 Exhaust gas silencer for motorcycle IC-engine |
| 08/19/1997 | US5659158 Of combustion gases from an internal combustion engine |
| 08/19/1997 | US5658656 Use of materials comprising microbubbles as acoustical barriers |
| 08/12/1997 | US5655367 Inlet or exhaust line for a reciprocating machine |
| 08/07/1997 | DE19603979A1 Induction tract silencer for internal combustion engine |
| 08/07/1997 | DE19603594A1 Pipe element in exhaust pipe of internal combustion engine |
| 08/06/1997 | EP0787247A1 Catalytic converter having a venturi formed from two stamped components |
| 07/31/1997 | WO1997027370A1 Soundabsorbing element and procedure for manufacture of this element and use of this element |
| 07/24/1997 | DE19619173C1 Pulsating-gas silencer with variable damping characteristics |
| 07/23/1997 | EP0785342A1 Muffler with catalytic converter |
| 07/23/1997 | EP0784845A1 Active control of aircraft engine inlet noise using compact sound sources and distributed error sensors |
| 07/15/1997 | US5649016 Automatic sound controlling method and apparatus for improving accuracy of producing a canceling sound |
| 07/15/1997 | US5647779 Manifold and water trap system for marine engine |
| 07/03/1997 | WO1997023712A1 Expansion chamber for two-cycle engine |
| 07/02/1997 | EP0781372A1 Internal combustion engine silencer device |
| 06/25/1997 | EP0780552A1 Exhaust system for motor vehicles |
| 06/25/1997 | EP0780550A1 Engine exhaust emission control system |
| 06/25/1997 | CN2256933Y Silencer casing |
| 06/18/1997 | EP0779415A1 Reactor chamber for catalytic cleaning of combustion exhausts |
| 06/12/1997 | WO1997021024A1 Reactive acoustic silencer |
| 06/11/1997 | EP0778399A1 Resonator |
| 06/11/1997 | EP0777823A1 Muffler for air operated reciprocating pumps |
| 06/11/1997 | CN1151487A Refrigeration compressor muffler |
| 06/05/1997 | CA2164370A1 Reactive acoustic silencer |
| 06/04/1997 | EP0636207B1 Adaptive multifrequency reactive muffler |
| 06/03/1997 | US5635687 Muffler for motor compressors for refrigeration appliances |
| 05/27/1997 | US5633482 Motorcycle exhaust system |
| 05/27/1997 | US5632660 Watercraft catalytic exhaust system |
| 05/21/1997 | EP0774581A1 Pulse damper or acoustic outlet piece for a compressor and compressor equipped therewith |
| 05/20/1997 | CA2074295C Automatic sound controlling apparatus |
| 05/15/1997 | WO1997017531A1 A noise attenuator for an induction system or an exhaust system |
| 05/14/1997 | CN1149672A Eliminating device for exhausting gas noise of closed compressor |
| 05/07/1997 | EP0771939A1 Silencer with variable damping characteristics |
| 05/07/1997 | DE19540660A1 Mineral fibre prepreg with long storage life, useful for filling vehicle silencer |
| 05/06/1997 | US5627897 Acoustic attenuation device with active double wall |
| 05/06/1997 | US5627351 Spark arrester for an exhaust unit of a vehicle |
| 04/29/1997 | US5625173 Single baffle linear muffler for marine engines |
| 04/24/1997 | WO1997005365A3 Silencer for a gas flow |
| 04/23/1997 | EP0769651A1 Refrigeration compressor muffler |
| 04/23/1997 | EP0647343B1 A transducer arrangement for active sound cancellation systems |
| 04/17/1997 | WO1997013443A1 A silencer for a suction cleaner |
| 04/09/1997 | CN2251623Y Silencer for automobile |
| 04/09/1997 | CN2251622Y Tractor silencer |
| 04/08/1997 | US5619020 Muffler |
| 04/03/1997 | DE19631431A1 interference-type sound damper |
| 04/02/1997 | EP0766288A2 Device and method for treating semiconductor elements |
| 04/02/1997 | EP0766228A2 Method of and apparatus for controlling noise generated in confined spaces |
| 03/27/1997 | WO1997011451A1 Method for damping vibration and the pressure wave from a material |
| 03/26/1997 | EP0764237A1 Exhaust silencer |
| 03/26/1997 | CN2250428Y Gas-exhausting silencer for diesel engine |
| 03/26/1997 | CN2250427Y Silencer for preventing combustion explosion of combustible gas |
| 03/26/1997 | CN1034360C Silencer combined with catalytic converter for internal combustion engines and modular diaphragm elements for said silencer |
| 03/25/1997 | US5614699 Automobile exhaust noise suppressor |
| 03/19/1997 | CN1145448A Cyclone discharge silencer |
| 03/18/1997 | US5612006 Catalytic converter and phase-spreading spiral muffler assembly |
| 03/18/1997 | US5611409 Exhaust muffler for small internal combustion engine |
| 03/11/1997 | US5609028 Pneumatic tool |
| 03/04/1997 | US5608194 Exhaust pipe structure for a motorcycle |
| 02/27/1997 | WO1997007325A1 Sound attenuator with throat tuner |
| 02/26/1997 | EP0759501A1 Exhaust temperature control |
| 02/26/1997 | CN2248246Y Anti-overheating device for barrel type exhaust pipe of motorcycle |
| 02/18/1997 | US5603214 Exhaust system for an internal combustion engine and method of operation thereof |
| 02/13/1997 | WO1997005368A1 Filter for exhaust gases of a gasoline engine, respectively a diesel engine |
| 02/13/1997 | WO1997005365A2 Silencer for a gas flow |
| 02/13/1997 | CA2224295A1 Silencer for a gas flow |
| 02/11/1997 | US5602926 Method and apparatus of determining the sound transfer characteristic of an active noise control system |
| 02/11/1997 | US5602368 Muffler for an internal combustion engine |
| 02/06/1997 | WO1997004220A1 Internal combustion engine silencer device |
| 02/06/1997 | CA2200078A1 Internal combustion engine silencer device |
| 02/05/1997 | EP0756977A2 Silencer for air cut-off valve |
| 02/05/1997 | CN2246714Y Wet-type silencing apparatus |
| 02/04/1997 | US5600106 Actively sound reduced muffler having a venturi effect configuration |
| 01/28/1997 | US5597986 Stamp formed muffler with nested chambers |
| 01/22/1997 | EP0755045A2 Sound wave cancellation arrangement |
| 01/22/1997 | EP0708882B1 Silencer for internal combustion engines, in particular single-cylinder diesel engines |
| 01/21/1997 | US5595515 Outboard motor exhaust system |
| 01/21/1997 | CA2065913C Multi-channel active acoustic attenuation system |
| 01/15/1997 | EP0753650A1 Exhaust gas purification apparatus |
| 01/15/1997 | EP0708881B1 Silencer for internal combustion engines, in particular single-cylinder diesel engines |
| 01/15/1997 | CN2245124Y Exhaust silencer for car |
| 01/15/1997 | CN1140481A Exhaust gas purification apparatus |
| 01/09/1997 | WO1997001023A1 Muffler with catalytic converter |
| 01/08/1997 | EP0752057A1 Catalytic method |
| 01/02/1997 | DE19619039A1 Embossed components used in building elements |
| 01/02/1997 | DE19522274A1 Exhaust system e.g. for IC engine |
| 01/01/1997 | CN2244097Y Blasting protective device for automobile silencer |
| 12/27/1996 | EP0683849B1 A silencer |
| 12/25/1996 | CN2243541Y Multi-pore expansion noise silencer |
| 12/25/1996 | CN2243540Y Noise silencer |
| 12/24/1996 | CA2035182C Stamp formed muffler with compound reinforcement pattern for preventing shell ring |
| 12/18/1996 | CN1138362A Turbine sound reducer |
| 12/05/1996 | DE19520157A1 Motor vehicle exhaust silencer with choke flap |
| 12/03/1996 | US5581619 Vehicle internal noise reduction system and method |
| 12/03/1996 | US5581056 Muffler |
| 12/03/1996 | US5579577 Improved method for fabricating a muffler |
| 12/01/1996 | CA2150583A1 Exhaust temperature control |
| 11/28/1996 | DE19518622A1 Filter-silencer-scrubber for stationary or vehicular diesel engines |