| Patents for F01N 1 - Silencing apparatus characterised by method of silencing (8,998) |
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| 11/11/1993 | WO1993022763A1 Noise control device |
| 11/03/1993 | EP0568129A2 Noise attenuation system |
| 11/03/1993 | EP0568127A2 Noise attenuation system |
| 10/28/1993 | WO1993021742A1 Tandem transducer and magnet structure |
| 10/28/1993 | WO1993021428A1 Adaptive multifrequency reactive muffler |
| 10/28/1993 | DE4213822A1 Internal combustion engine exhaust gas filter |
| 10/28/1993 | DE4213726A1 Exhaust gas system and silencer for IC engine - has coaxial end tubes of different length and cross=section |
| 10/27/1993 | CN2144715Y Electronic silencer for vehicle |
| 10/19/1993 | US5255321 Acoustic transducer for automotive noise cancellation |
| 10/14/1993 | WO1993020667A1 Noise cancelling transducer |
| 10/14/1993 | WO1993020551A1 An active noise cancellation apparatus for a motor vehicle |
| 10/14/1993 | WO1993020341A1 Internal combustion engine variable tuned exhaust system |
| 10/14/1993 | DE4211600A1 Exhaust system for 2-stroke IC engine - has single resonator chamber for each cylinder, with diffusor chamber next to ejector slot |
| 10/13/1993 | EP0564729A1 Automotive muffler and dust catcher assembly |
| 10/13/1993 | EP0564692A2 Stamp formed muffler with inline expansion chamber and arcuately formed effective flow tubes |
| 10/12/1993 | US5252788 Stamp formed muffler with in-line expansion chamber and arcuately formed effective flow tubes |
| 10/06/1993 | EP0563882A1 Method for catalytically cleaning the exhaust gas of an internal combustion engine and exhaust gas system |
| 10/05/1993 | US5250094 Fiber media composed of ceramic, glass and metallic thermoconductive fibers; longitudinal pleats define internal flow passageway |
| 09/30/1993 | WO1993019287A1 Fishbone standardised silencers for (internal) combustion engines |
| 09/30/1993 | WO1993018841A1 Ceramic filter construction and methods of filtering using such construction |
| 09/30/1993 | DE4306638A1 Spatial noise reducing device for vehicle passenger compartment - generates and updates compensating noise to interfere with transmitted periodic spatial noise |
| 09/30/1993 | CA2146166A1 Fishbone, standardised silencers for internal combustion engines |
| 09/28/1993 | US5248859 Collector/muffler/catalytic converter exhaust systems for evacuating internal combustion engine cylinders |
| 09/23/1993 | DE4308923A1 Active noise reduction system for vehicle passenger compartment - uses control noise sources for adaptive noise cancellation under control of detected residual noise level |
| 09/21/1993 | US5246473 High performance exhaust muffler |
| 09/21/1993 | US5246205 Valve assembly and use |
| 09/21/1993 | US5245933 Heat and smoke remover |
| 09/14/1993 | US5245140 Muffler |
| 09/14/1993 | US5244521 Pneumatic tool muffler system |
| 09/09/1993 | DE4206878A1 Supercharging system for IC piston engine - uses low pressure generated by nozzle in exhaust manifold to draw in air |
| 09/08/1993 | EP0558472A1 Improvements in attenuators |
| 09/01/1993 | EP0333815B1 An exhaust gas apparatus for internal combustion engines provided with a device for housing filters designed to trap solid particles and unburned hydrocarbons entrained in exhaust gases |
| 08/31/1993 | US5239950 2-cycle engine |
| 08/26/1993 | DE4205581A1 Exhaust pipe with adjustable throttle element - which has several shaped bodies determining free flow cross section |
| 08/11/1993 | EP0554875A1 Exhaust system for two-cycle internal combustion engines |
| 08/10/1993 | US5234364 Exhaust system for small planing boat |
| 08/03/1993 | US5233137 Active noise cancellation muffler for a motor vehicle |
| 08/03/1993 | CA1320910C Regenerable desiccant cartridge for automotive muffler |
| 07/21/1993 | EP0551713A1 Refrigerant compressor discharge muffler |
| 07/20/1993 | US5229557 Rigidified muffler assembly |
| 07/20/1993 | US5229556 Internal ported band pass enclosure for sound cancellation |
| 07/20/1993 | US5229078 Filter for the separation of impurities or contaminants |
| 07/14/1993 | EP0550562A1 Trap apparatus with bypass |
| 07/13/1993 | US5227593 Muffler assembly for engine |
| 07/13/1993 | CA1320136C Muffler with drain holes |
| 07/07/1993 | EP0458891B1 Screw rotor machine comprising a sound silencing device |
| 07/07/1993 | CN2137718Y Circular dismantle type silencer of boost vehicle |
| 06/24/1993 | WO1993012328A1 Silencer, in particular for internal combustion engines |
| 06/22/1993 | US5222148 Active noise control system for attenuating engine generated noise |
| 06/22/1993 | CA1319326C Engine exhaust control system and method |
| 06/15/1993 | US5220137 Engine exhaust muffler |
| 06/15/1993 | US5218817 Three way conversion catalyst; reduction in oxygen-poor front portion; intermittent pulsations of exhaust draw air into rear portion to accelerate oxidation |
| 06/10/1993 | WO1993011347A1 Muffler |
| 06/09/1993 | EP0285632B1 Active vibration control |
| 06/09/1993 | DE4140429A1 Noise damping for engine exhaust system - has exhaust pipework overlapped at joint and in configuration to separate damping housing into absorption sections |
| 06/08/1993 | US5216809 Acoustic muffler with one-piece housing |
| 06/08/1993 | CA1318956C Method of transfer function generation and active noise cancellation in a vibrating system |
| 06/01/1993 | US5216721 Multi-channel active acoustic attenuation system |
| 05/27/1993 | WO1993010339A1 A variable exhaust system for an internal combustion engine |
| 05/26/1993 | EP0542749A1 Noise cancellation apparatus |
| 05/25/1993 | US5214254 Triple cone exhaust wave tuner |
| 05/25/1993 | US5214253 Automotive exhaust system |
| 05/25/1993 | US5212948 Trap apparatus with bypass |
| 05/19/1993 | EP0542169A1 Silencer for a screw compressor |
| 05/19/1993 | EP0542124A1 Silencer |
| 05/19/1993 | CN2133677Y Dissipative muffler for automobile |
| 05/18/1993 | CA1317834C Exhaust control device of engine |
| 05/13/1993 | WO1993009334A1 Actively sound reduced muffler having a venturi effect configuration |
| 05/12/1993 | EP0540891A1 Exhaust installation for a motor vehicle reciprocating engine |
| 05/12/1993 | CN2132837Y 排气管 Exhaust pipe |
| 05/11/1993 | US5210805 Transducer flux optimization |
| 05/06/1993 | DE4217632A1 Exhaust gas system for IC engine - uses two tail pipes of different lengths with common inflow region |
| 05/05/1993 | EP0539939A1 Active noise cancellation system |
| 05/05/1993 | CN2131986Y Silencer for internal-combustion engine |
| 04/28/1993 | CN2130926Y Slit depressurization spouting dissipative muffler |
| 04/27/1993 | US5206467 Muffler with a catalyst |
| 04/27/1993 | US5205719 Refrigerant compressor discharge muffler |
| 04/21/1993 | EP0537603A1 Double-walled air-insulated pipe for exhaust installations in vehicles |
| 04/15/1993 | WO1993007375A1 Device for attenuating standing waves in an induction intake system |
| 04/14/1993 | CN1070985A Silencer combined with catalytic converter for internal combustionengines and modular diaphragm elements for said silencer |
| 04/13/1993 | US5201790 Fuel control apparatus of an engine |
| 04/06/1993 | US5200582 Passive muffler for low pass frequencies |
| 04/06/1993 | CA1315698C Stamp formed muffler with reinforced outer shell |
| 04/01/1993 | WO1993006588A1 Noise damper with fluid flowing through it |
| 03/30/1993 | US5198626 Heat protective, sound permeable lining |
| 03/30/1993 | US5198625 Exhaust muffler for internal combustion engines |
| 03/25/1993 | DE4131777A1 Fluiddurchstroemter schalldaempfer Fluiddurchstroemter EXHAUSTS |
| 03/23/1993 | US5196655 Muffler for marine engine |
| 03/23/1993 | US5196654 Compressor discharge muffler construction |
| 03/23/1993 | US5196653 Muffler for air powered turbine drive |
| 03/18/1993 | WO1993005282A1 Muffler |
| 03/18/1993 | CA2116695A1 Muffler |
| 03/10/1993 | EP0530892A2 Silencer device for internal combustion engines |
| 03/10/1993 | EP0530523A2 Active silencer with improved method of selecting coefficient sequence |
| 03/10/1993 | EP0530493A2 Silencer combined with catalytic converter for internal combustion engines and modular diaphragm elements for said silencer |
| 03/03/1993 | EP0530017A2 Combination muffler and catalytic converter |
| 02/25/1993 | DE4127401A1 Schalldaempferkulisse fuer den einsatz bei hohen temperaturen Schalldaempferkulisse for the use at high temperatures |
| 02/23/1993 | US5189267 Pneumatic tool muffler system |
| 02/23/1993 | US5189266 Vehicular exhaust resonance suppression system and sensing means therefore |
| 02/16/1993 | US5187334 Acoustic muffler with one-piece housing |