| 2024/0418,111 | SOUND ATTENUATING ENGINE EXHAUST SYSTEM | Aug 26, 24 | Dec 19, 24 | K&N Engineering, Inc. |
| 2024/0183,293 | AIR AMPLIFIER WITH NOISE SUPPRESSION | Feb 12, 24 | Jun 06, 24 | MSG Entertainment Group, LLC |
| 2024/0077,008 | AIR-TRANSPARENT SELECTIVE SOUND SILENCER USING ULTRA-OPEN METAMATERIAL | Nov 08, 23 | Mar 07, 24 | Not available |
| 2022/0381,169 | SOUND PRESSURE GENERATOR | Apr 28, 22 | Dec 01, 22 | Not available |
| 2022/0298,940 | Noise abatement system for internal combustion engines | Sep 25, 20 | Sep 22, 22 | Not available |
| 2022/0042,430 | EXHAUSTER ASSEMBLY FOR A VEHICLE | Aug 07, 20 | Feb 10, 22 | Not available |
| 2021/0231,036 | MUFFLER SYSTEM | Jan 08, 21 | Jul 29, 21 | Not available |
| 2021/0123,364 | Sound Suppressor | Apr 05, 19 | Apr 29, 21 | Not available |
| 2021/0087,957 | AIR-TRANSPARENT SELECTIVE SOUND SILENCER USING ULTRA-OPEN METAMATERIAL | Dec 04, 20 | Mar 25, 21 | Not available |
| 2021/0062,696 | Exhaust Sound Bypass | Mar 18, 19 | Mar 04, 21 | Not available |
| 2020/0400,060 | EXHAUST SYSTEM AND MUFFLER | Jun 19, 19 | Dec 24, 20 | Not available |
| 2020/0355,101 | SOUND GENERATING DEVICE, VEHICLE EXHAUST SYSTEM AND METHOD OF MANUFACTURING A SOUND GENERATING DEVICE | Nov 21, 17 | Nov 12, 20 | Not available |
| 2020/0300,136 | METHOD OF SELECTING AN OPERATING MODE OF AN ACTIVE SOUND GENERATING DEVICE OF AN EXHAUST SYSTEM, EXHAUST SYSTEM, AND MOTOR VEHICLE | Mar 17, 20 | Sep 24, 20 | Not available |
| 2020/0291,837 | EXHAUST SYSTEM FOR AN INTERNAL COMBUSTION ENGINE OF A MOTOR VEHICLE AS WELL AS MOTOR VEHICLE | Mar 09, 20 | Sep 17, 20 | Not available |
| 2019/0301,320 | SOUND GENERATING SYSTEM, MOTOR VEHICLE WITH A SOUND GENERATING SYSTEM, AND SOUND SENSOR UNIT FOR A SOUND GENERATING SYSTEM | Mar 19, 19 | Oct 03, 19 | Not available |
| 2019/0301,321 | EXHAUST GAS SYSTEM FOR AN INTERNAL COMBUSTION ENGINE OF A MOTOR VEHICLE | Mar 27, 19 | Oct 03, 19 | Not available |
| 2019/0259,371 | NOISE REDUCTION DEVICE, MOBILE BODY DEVICE, AND NOISE REDUCTION METHOD | Jun 28, 17 | Aug 22, 19 | Not available |
| 2019/0162,090 | MOTOR VEHICLE HAVING A CONTROL APPARATUS FOR AT LEAST ONE LOUDSPEAKER OF AN EXHAUST SYSTEM OF THE MOTOR VEHICLE | Feb 23, 17 | May 30, 19 | Audi AG |
| 2019/0136,729 | ACTIVE NOISE CANCELATION SYSTEMS AND DEVICES | Dec 12, 18 | May 09, 19 | Not available |
| 2019/0055,866 | EXHAUST DEVICE FOR INTERNAL COMBUSTION ENGINE | Jan 13, 17 | Feb 21, 19 | Honda Motor Co. Ltd. |