F01N 1/22
The parts being resilient walls
Official title: the parts being resilient walls
F01N1/22 (The parts being resilient walls) appears on 32 US grants and 13 published applications in this corpus.
Search patents in F01N- Granted patents
- 32
- Published applications
- 13
- Assignees
- 28
- Inventors
- 62
- Latest grant
- 21 May 2024
Filings by year
| Year | Granted patents | Published applications |
|---|---|---|
| 1977 | 4 | 0 |
| 1978 | 0 | 0 |
| 1979 | 1 | 0 |
| 1980 | 1 | 0 |
| 1981 | 0 | 0 |
| 1982 | 1 | 0 |
| 1983 | 0 | 0 |
| 1984 | 1 | 0 |
| 1985 | 1 | 0 |
| 1986 | 1 | 0 |
| 1987 | 0 | 0 |
| 1988 | 1 | 0 |
| 1989 | 1 | 0 |
| 1990 | 0 | 0 |
| 1991 | 1 | 0 |
| 1992 | 2 | 0 |
| 1993 | 3 | 0 |
| 1994 | 0 | 0 |
| 1995 | 1 | 0 |
| 1996 | 1 | 0 |
| 1997 | 0 | 0 |
| 1998 | 0 | 0 |
| 1999 | 0 | 0 |
| 2000 | 0 | 0 |
| 2001 | 0 | 0 |
| 2002 | 1 | 0 |
| 2003 | 0 | 0 |
| 2004 | 0 | 0 |
| 2005 | 1 | 1 |
| 2006 | 0 | 0 |
| 2007 | 0 | 1 |
| 2008 | 0 | 1 |
| 2009 | 0 | 0 |
| 2010 | 1 | 0 |
| 2011 | 0 | 0 |
| 2012 | 0 | 2 |
| 2013 | 3 | 0 |
| 2014 | 0 | 0 |
| 2015 | 0 | 0 |
| 2016 | 0 | 0 |
| 2017 | 0 | 1 |
| 2018 | 1 | 1 |
| 2019 | 0 | 2 |
| 2020 | 0 | 1 |
| 2021 | 2 | 2 |
| 2022 | 1 | 1 |
| 2023 | 1 | 0 |
| 2024 | 1 | 0 |
By publication year. Applications have been published since 2001.
Recent patents
- Exhaust sound bypass21 May 2024US 11,988,122 B2McLaren Automotive Limited
- Exhaust system component14 Mar 2023US 11,603,781 B2Faurecia Emissions Control Technologies, USA, LLC
- Variable restriction valve for vehicle exhaust system10 May 2022US 11,326,490 B2Faurecia Emissions Control Technologies, USA, LLC
- Passive flap valve for vehicle exhaust system19 Oct 2021US 11,149,602 B2Faurecia Emissions Control Technologies, USA, LLC
- Road vehicle with an internal combustion engine and provided with an exhaust noise transmission device8 Jun 2021US 11,028,743 B2Ferrari S.P. A.
- Exhaust component with flexible membrane27 Oct 2022US 2022/0341352 A1Faurecia Emissions Control Technologies, USA, LLC
- Exhaust system component5 Aug 2021US 2021/0239017 A1Faurecia Emissions Control Technologies, USA, LLC
- Exhaust Sound Bypass4 Mar 2021US 2021/0062696 A1McLaren Automotive Limited
- Active helmholtz resonator with actuated membrane20 Aug 2020US 2020/0265822 A1Faurecia Emissions Control Technologies, USA, LLC
- Passive flap valve for vehicle exhaust system28 Nov 2019US 2019/0360373 A1Faurecia Emissions Control Technologies, USA, LLC
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
- Device for reducing static and dynamic pressures in pipelines, particularly of solid-borne sound in tubular conduits47US 4,448,538 A1984
- Active silencer38US 4,805,733 ANippon Soken, Inc. · 1989
- Protective anc loudspeaker membrane31US 5,233,137 AFord Motor Company · 1993
- Single cavity automobile muffler28US 5,272,286 AActive Noise and Vibration Technologies, Inc. · 1993