| Patents for F01N 1 - Silencing apparatus characterised by method of silencing (8,998) |
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| 05/25/2004 | US6739922 Personal watercraft |
| 05/25/2004 | US6739921 Exhaust structure of exhaust system for a boat |
| 05/25/2004 | US6739426 Low-noise pressure reduction system |
| 05/21/2004 | WO2004042203A2 Muffler with spark arrestor |
| 05/21/2004 | CA2552091A1 Outlet silencer structures for turbine |
| 05/20/2004 | US20040096371 Shaped bodies in the housing of metallic fiber composite are used for diversion, particulate retention and muffling |
| 05/20/2004 | US20040094360 Acoustic dumper for exhaust system |
| 05/19/2004 | DE202004002341U1 Versorgungsaggregateanordnung für ein Kraftfahrzeug Supply equipment arrangement for a motor vehicle |
| 05/19/2004 | DE10251501A1 Schallreduzierendes Bauteil für ein Luftführungsrohr Schallreduzierendes component for an air guide tube |
| 05/19/2004 | CN1497137A Exhause pipe-structure |
| 05/18/2004 | US6736160 Valve structure for engine exhaust system |
| 05/13/2004 | US20040089500 Muffler with spark arrestor |
| 05/13/2004 | US20040088977 Exhaust device with an electric generator |
| 05/13/2004 | US20040088968 Gas discharge device for a construction vehicle |
| 05/13/2004 | DE10349367A1 Bauweise zur Abgasemissionsbegrenzung Construction exhaust emission limit |
| 05/12/2004 | EP1418569A1 Acoustic damper for exhaust system |
| 05/12/2004 | CN2615340Y Noise control device for high-pressure plunger pump centrifugal pump room |
| 05/11/2004 | US6732510 Exhaust processor with variable tuning system |
| 05/11/2004 | US6732509 Engine acoustical system |
| 05/06/2004 | US20040084240 Exhaust system sound-reducing componment |
| 05/06/2004 | EP1416148A2 Noise reduction part for an air intake tube |
| 05/06/2004 | EP1415073A1 Contraction limiter for a honeycomb body |
| 05/06/2004 | EP1144815B1 Perforated end pipe of silencer unit |
| 05/06/2004 | DE10248607A1 Verfahren zum Erzeugen eines Frequenzspektrums in einer Auspuffrohrleitung einer Hubkolbenmaschine A method for generating a frequency spectrum in an exhaust pipe of a reciprocating engine |
| 05/05/2004 | CN2614162Y Metal winding pad for locomotive exhaust pipe |
| 05/05/2004 | CN1493773A Noise reducing exhaust device |
| 05/04/2004 | US6729127 Exhaust cleaning system for motor vehicles, especially diesel-powered utility vehicles |
| 04/29/2004 | WO2004036001A1 Method for producing a frequency spectrum in an exhaust pipe of an internal combustion piston engine |
| 04/29/2004 | WO2004027231A3 Silencer and method for designing the same |
| 04/29/2004 | US20040079582 Muffler for suction system exhaust air used with an automatic cutting machine |
| 04/29/2004 | US20040079074 Construction for exhaust emission control |
| 04/28/2004 | EP1413717A1 Flapper finger valve assembly |
| 04/28/2004 | CN1492794A Pneumatic tool with muffler bypass mechanism |
| 04/27/2004 | US6726957 Thermal insulating and acoustic absorption coating |
| 04/27/2004 | US6725654 Vortex device and system for treating exhaust gas from internal combustion engine |
| 04/22/2004 | WO2004033866A1 Housing arranged in an exhaust gas system for a combustion engine |
| 04/22/2004 | US20040074694 Silencer and exhaust gas system comprising a silencer |
| 04/21/2004 | EP1411218A2 Method for manufacturing insulated bodies |
| 04/20/2004 | US6722123 Exhaust aftertreatment device, including chemical mixing and acoustic effects |
| 04/15/2004 | WO2004031545A1 Absorptive/reactive muffler for variable speed compressors |
| 04/15/2004 | WO2003056147A3 Silent gas expansion diffuser |
| 04/15/2004 | US20040069563 Silencer with a plurality of resonance chambers |
| 04/15/2004 | US20040069562 Exhaust pipe structure |
| 04/15/2004 | DE202004000659U1 Schalldämpfer für Kraftfahrzeuge mit Verbrennungsmotor Silencer for vehicles with internal combustion engine |
| 04/15/2004 | DE10246596A1 Schalldämpfer Silencer |
| 04/14/2004 | EP1408209A1 Exhaust pipe structure |
| 04/14/2004 | EP1408206A1 Valve device for silencer |
| 04/14/2004 | CN2611608Y Novel exhaust silencer of I.C. engine |
| 04/14/2004 | CN1488842A Exhaust silencer |
| 04/14/2004 | CN1488841A 内燃机 Internal combustion engine |
| 04/13/2004 | US6719084 Exhaust system for vehicular two-cylinder engine |
| 04/13/2004 | US6719078 Ventilable silencer unit for vehicles |
| 04/08/2004 | WO2004029561A2 Exhaust sound and emission control systems |
| 04/08/2004 | US20040065505 Muffler |
| 04/08/2004 | US20040065504 Absorptive/reactive muffler for variable speed compressors |
| 04/08/2004 | US20040065503 Valve device for silencer |
| 04/08/2004 | US20040065375 Constant acceleration and constant hydraulic diameter eliminate pressure loss in internal and external flow |
| 04/08/2004 | DE19726059B4 Schalldämpfer für einen Verbrennungsmotor Silencer for an internal combustion engine |
| 04/08/2004 | CA2499942A1 Exhaust sound and emission control systems |
| 04/07/2004 | EP1405988A2 Silencer |
| 04/06/2004 | US6715583 Silencer and power enhancement environmental device |
| 04/06/2004 | US6715581 Exhaust pipe and muffler for motorcycle that does not heat discolor |
| 04/06/2004 | CA2318254C Improved high performance muffler |
| 04/01/2004 | WO2004027231A2 Silencer and method for designing the same |
| 04/01/2004 | WO2004007108A3 Sound-absorbing hollow body for an air supply |
| 04/01/2004 | WO2003103477A3 Apparatus for containing noise generated by a pneumatically powered surgical instrument and related method |
| 04/01/2004 | US20040060769 Sound attenuation apparatus and method |
| 04/01/2004 | DE202004000522U1 Silencer box for exhaust gasses from IC engine has a number of compartments separated by bulkheads pierced by one piece ducts with lateral apertures produced by press operations |
| 04/01/2004 | DE10243884A1 Resonatorschalldämpfer Resonatorschalldämpfer |
| 03/31/2004 | EP1403476A2 Gas flow silencer |
| 03/31/2004 | CN2608695Y Exhaust silencing apparatus for internal combustion engine |
| 03/31/2004 | CN1143995C Silencer and air conditioner |
| 03/30/2004 | CA2440716A1 Sound attenuation apparatus and method |
| 03/30/2004 | CA2139122C Muffler assembly with balanced chamber and method |
| 03/25/2004 | US20040058597 Exhaust outlet equipment of small watercraft and pipe mounting structure |
| 03/25/2004 | US20040055815 Muffler for pneumatic hand tool |
| 03/25/2004 | DE10243225A1 Sound damper contained in housing with surface containing flanges and inlet and outlet for exhaust gas |
| 03/24/2004 | EP1400662A1 Silencer with resonator |
| 03/24/2004 | EP1399654A1 Combined catalytic muffler |
| 03/23/2004 | US6708798 Easily controlled exhaust pipe |
| 03/18/2004 | WO2004022932A1 Muffler |
| 03/18/2004 | WO2004022931A1 Active vent noise reduction device for use with an exhaust or intake pipe |
| 03/18/2004 | US20040050618 Exhaust sound and emission control systems |
| 03/17/2004 | EP1397673A2 Method and device for the comprehensive characterisation and monitoring of exhaust gases and the regulation of engines in particular internal combustion engines and components for the treatment of exhaust gases |
| 03/17/2004 | EP1397586A1 Exhaust flow guide for jet noise reduction |
| 03/16/2004 | US6705429 Muffler |
| 03/11/2004 | US20040048527 Exhaust system for a small watercraft |
| 03/11/2004 | DE10239133A1 Combustion engine, esp. 2-stroke motor for hand-held chain saws etc. has resonator tube partially/wholly integrated in engine housing wall, to save space |
| 03/11/2004 | DE10239132A1 Abgasschalldämpfer Exhaust muffler |
| 03/10/2004 | EP1395743A1 Silencer |
| 03/09/2004 | US6702061 Environmentally protected microphone for an active noise control system |
| 03/04/2004 | WO2003056223A3 Sound absorbing device in a pipe duct |
| 03/04/2004 | US20040040783 Exhaust-gas muffler |
| 03/04/2004 | US20040040782 Silencer containing one or more porous bodies |
| 03/04/2004 | US20040040293 Internal combustion engine |
| 03/04/2004 | DE10333021A1 HQ System of pipes for a passenger vehicle incorporates two transmission tracks, two outer walls, two inlets and three passages |
| 03/04/2004 | DE10239116A1 Verbrennungsmotor Combustion engine |
| 03/03/2004 | EP1141936B1 Controlled acoustic waveguide for soundproofing |
| 03/03/2004 | CN2605386Y Exhaust silencer for internal combustion engine |
| 03/03/2004 | CN2605385Y Exhaust silencer for internal combustion engine |