F01N 1/06
Silencing apparatus characterised by method of silencing: by using interference effect
Official title: by using interference effect
F01N1/06 (Silencing apparatus characterised by method of silencing: by using interference effect) appears on 295 US grants and 189 published applications in this corpus.
Search patents in F01N- Granted patents
- 295
- Published applications
- 189
- Assignees
- 165
- Inventors
- 523
- Latest grant
- 8 Jul 2025
Filings by year
| Year | Granted patents | Published applications |
|---|---|---|
| 1976 | 8 | 0 |
| 1977 | 3 | 0 |
| 1978 | 1 | 0 |
| 1979 | 3 | 0 |
| 1980 | 3 | 0 |
| 1981 | 2 | 0 |
| 1982 | 4 | 0 |
| 1983 | 5 | 0 |
| 1984 | 2 | 0 |
| 1985 | 2 | 0 |
| 1986 | 5 | 0 |
| 1987 | 3 | 0 |
| 1988 | 1 | 0 |
| 1989 | 2 | 0 |
| 1990 | 3 | 0 |
| 1991 | 7 | 0 |
| 1992 | 9 | 0 |
| 1993 | 9 | 0 |
| 1994 | 11 | 0 |
| 1995 | 13 | 0 |
| 1996 | 8 | 0 |
| 1997 | 7 | 0 |
| 1998 | 5 | 0 |
| 1999 | 8 | 0 |
| 2000 | 5 | 0 |
| 2001 | 6 | 2 |
| 2002 | 3 | 9 |
| 2003 | 7 | 5 |
| 2004 | 7 | 10 |
| 2005 | 6 | 10 |
| 2006 | 4 | 4 |
| 2007 | 2 | 7 |
| 2008 | 3 | 5 |
| 2009 | 7 | 5 |
| 2010 | 6 | 5 |
| 2011 | 5 | 4 |
| 2012 | 3 | 9 |
| 2013 | 9 | 10 |
| 2014 | 5 | 8 |
| 2015 | 6 | 13 |
| 2016 | 12 | 5 |
| 2017 | 12 | 18 |
| 2018 | 10 | 7 |
| 2019 | 15 | 15 |
| 2020 | 10 | 13 |
| 2021 | 6 | 10 |
| 2022 | 7 | 7 |
| 2023 | 9 | 2 |
| 2024 | 4 | 5 |
| 2025 | 2 | 1 |
By publication year. Applications have been published since 2001.
Subgroups
Granted patents
Recent patents
- Air-transparent selective sound silencer using ultra-open metamaterial8 Jul 2025US 12,352,190 B2Trustees of Boston University
- System and method for a cab-mounted muffler assembly4 Feb 2025US 12,215,612 B2Transportation IP Holdings, LLC
- Sound bypass17 Dec 2024US 12,170,078 B2McLaren Automotive Limited
- Sound attenuating engine exhaust system27 Aug 2024US 12,071,874 B2K&N Engineering, Inc.
- Methods and system for adjusting vehicle operation based on a predicted state of a vehicle occupant6 Aug 2024US 12,054,163 B2Ford Global Technologies, LLC
- Acoustic efficiency27 Feb 2025US 2025/0067202 A1McLaren Automotive Limited
- Sound attenuating engine exhaust system19 Dec 2024US 2024/0418111 A1K&N Engineering, Inc.
- Acoustic device for a vehicle19 Sep 2024US 2024/0308342 A1
- Automatic vehicle feature selection27 Jun 2024US 2024/0208507 A1GM Global Technology Operations LLC
- Air amplifier with noise suppression6 Jun 2024US 2024/0183293 A1MSG Entertainment Group, LLC
Most cited
By later US patents
- Silencer100US 6,283,246 B1Betech Co., Ltd. · 2001
- Active noise control system for attenuating engine generated noise89US 5,321,759 AGeneral Motors Corporation · 1994
- Hybrid active silencer80US 4,665,549 ANelson Industries, Inc. · 1987
- Integrated active vibration cancellation and machine diagnostic system67US 5,313,407 AFord Motor Company · 1994
- Active sound attenation system for engine exhaust systems and the like60US 5,097,923 ANoise Cancellation Technologies, Inc. · 1992