F01N 1/16
Silencing apparatus characterised by method of silencing: by using movable parts
Official title: by using movable parts
F01N1/16 (Silencing apparatus characterised by method of silencing: by using movable parts) appears on 476 US grants and 426 published applications in this corpus.
Search patents in F01N- Granted patents
- 476
- Published applications
- 426
- Assignees
- 211
- Inventors
- 935
- Latest grant
- 25 Aug 2026
Filings by year
| Year | Granted patents | Published applications |
|---|---|---|
| 1976 | 2 | 0 |
| 1977 | 4 | 0 |
| 1978 | 2 | 0 |
| 1979 | 3 | 0 |
| 1980 | 5 | 0 |
| 1981 | 3 | 0 |
| 1982 | 6 | 0 |
| 1983 | 0 | 0 |
| 1984 | 3 | 0 |
| 1985 | 8 | 0 |
| 1986 | 2 | 0 |
| 1987 | 3 | 0 |
| 1988 | 1 | 0 |
| 1989 | 4 | 0 |
| 1990 | 9 | 0 |
| 1991 | 5 | 0 |
| 1992 | 5 | 0 |
| 1993 | 7 | 0 |
| 1994 | 1 | 0 |
| 1995 | 3 | 0 |
| 1996 | 5 | 0 |
| 1997 | 8 | 0 |
| 1998 | 11 | 0 |
| 1999 | 13 | 0 |
| 2000 | 3 | 0 |
| 2001 | 5 | 3 |
| 2002 | 9 | 14 |
| 2003 | 15 | 9 |
| 2004 | 9 | 14 |
| 2005 | 10 | 17 |
| 2006 | 7 | 20 |
| 2007 | 5 | 21 |
| 2008 | 14 | 22 |
| 2009 | 7 | 10 |
| 2010 | 15 | 19 |
| 2011 | 10 | 14 |
| 2012 | 7 | 18 |
| 2013 | 17 | 13 |
| 2014 | 16 | 11 |
| 2015 | 13 | 17 |
| 2016 | 15 | 20 |
| 2017 | 26 | 34 |
| 2018 | 11 | 29 |
| 2019 | 36 | 35 |
| 2020 | 24 | 26 |
| 2021 | 24 | 20 |
| 2022 | 26 | 15 |
| 2023 | 21 | 12 |
| 2024 | 9 | 7 |
| 2025 | 7 | 5 |
| 2026 | 2 | 1 |
By publication year. Applications have been published since 2001. 2026 runs to 8 Oct.
Subgroups
Granted patents
- F01N 1/166For changing the flow path through the silencer or for adjusting the214
- F01N 1/165For adjusting flow area165
- F01N 1/161For adjusting resonance or dead chambers or passages to resonance or dead114
- F01N 1/168For controlling or modifying silencing characteristics only72
- F01N 1/18Having rotary movement60
- F01N 1/22The parts being resilient walls32
- F01N 1/20Having oscillating or vibrating movement15
Recent patents
- Muffler for internal combustion engines25 Aug 2026US 12,716,373 B2Plaggio & C. S.P.A.
- Noise cancelling device21 Jul 2026US 12,688,841 B1King Fahd University of Petroleum and Minerals
- Variable exhaust control system11 Nov 2025US 12,467,399 B2
- Dual mode muffler21 Oct 2025US 12,448,907 B2Tenneco Automotive Operating Company Inc.
- Coupling device, valve system and method for assembling a coupling device14 Oct 2025US 12,442,460 B2Akrapovic d.d.
- Coupling device, valve system and method for operating a valve system10 Sep 2026US 2026/0266207 A1Akrapovic d.d.
- Convertible silencer25 Dec 2025US 2025/0389215 A1Discovery Energy, LLC
- Exhaust handling systems for marine vessels and related methods27 Nov 2025US 2025/0360999 A1Marathon Petroleum Company LP
- Dual Mode Muffler27 Feb 2025US 2025/0067201 A1Tenneco Automotive Operating Company Inc.
- Acoustic efficiency27 Feb 2025US 2025/0067202 A1McLaren Automotive Limited
Most cited
By later US patents
- Active sound attenation system for engine exhaust systems and the like60US 5,097,923 ANoise Cancellation Technologies, Inc. · 1992
- Engine exhaust control system and method59US 4,912,927 A1990
- Bypass muffler55US 5,959,263 ABiggs Manufacturing, Inc. · 1999
- Automobile exhaust noise suppressor54US 5,614,699 ANissan Motor Co., Ltd. · 1997
- Exhaust system for internal combustion engines51US 5,388,408 ALawrence-Keech Inc. · 1995