F01N 2490/10
Two or more expansion chambers in parallel
F01N2490/10 (Two or more expansion chambers in parallel) appears on 35 US grants and 26 published applications in this corpus.
Search patents in F01N- Granted patents
- 35
- Published applications
- 26
- Assignees
- 29
- Inventors
- 80
- Latest grant
- 1 Apr 2025
Filings by year
| Year | Granted patents | Published applications |
|---|---|---|
| 1988 | 1 | 0 |
| 1989 | 2 | 0 |
| 1990 | 0 | 0 |
| 1991 | 0 | 0 |
| 1992 | 0 | 0 |
| 1993 | 0 | 0 |
| 1994 | 0 | 0 |
| 1995 | 1 | 0 |
| 1996 | 0 | 0 |
| 1997 | 0 | 0 |
| 1998 | 0 | 0 |
| 1999 | 2 | 0 |
| 2000 | 0 | 0 |
| 2001 | 2 | 0 |
| 2002 | 0 | 1 |
| 2003 | 1 | 0 |
| 2004 | 0 | 0 |
| 2005 | 0 | 0 |
| 2006 | 0 | 2 |
| 2007 | 0 | 0 |
| 2008 | 0 | 1 |
| 2009 | 1 | 0 |
| 2010 | 1 | 1 |
| 2011 | 1 | 0 |
| 2012 | 1 | 0 |
| 2013 | 0 | 0 |
| 2014 | 1 | 1 |
| 2015 | 0 | 1 |
| 2016 | 2 | 1 |
| 2017 | 1 | 1 |
| 2018 | 0 | 0 |
| 2019 | 1 | 6 |
| 2020 | 1 | 3 |
| 2021 | 5 | 4 |
| 2022 | 6 | 4 |
| 2023 | 4 | 0 |
| 2024 | 0 | 0 |
| 2025 | 1 | 0 |
By publication year. Applications have been published since 2001.
Recent patents
- Muffler1 Apr 2025US 12,263,954 B2Orbital Australia Pty Ltd
- Silencer for an exhaust system of an internal combustion engine12 Dec 2023US 11,840,948 B2Purem GmbH
- Acoustically tuned muffler18 Jul 2023US 11,702,969 B2Tenneco Automotive Operating Company Inc.
- Exhaust muffler for an exhaust system of an internal combustion engine9 May 2023US 11,643,953 B2Purem GmbH
- Decomposition chamber for aftertreatment systems24 Jan 2023US 11,560,821 B2Cummins Emission Solutions Inc.
- Silencer for an exhaust system of an internal combustion engine15 Dec 2022US 2022/0397050 A1Purem GmbH
- Muffler1 Sep 2022US 2022/0274714 A1Orbital Australia Pty Ltd
- Acoustically Tuned Muffler1 Sep 2022US 2022/0275738 A1Tenneco Automotive Operating Company Inc.
- Decomposition chamber for aftertreatment systems16 Jun 2022US 2022/0186651 A1Cummins Emission Solutions Inc.
- Decomposition chamber for aftertreatment systems28 Oct 2021US 2021/0332733 A1Cummins Emission Solutions Inc.
Most cited
By later US patents
- Engine exhaust noise suppressor42US 5,984,045 ANissan Motor Co., Ltd. · 1999
- Multi-fold side branch muffler31US 5,952,625 AJB Design, Inc. · 1999
- Exhaust silencer and communicating pipe thereof30US 6,241,044 B1Komatsu Ltd. · 2001
- Silencer combined with catalytic converter for internal combustion engines and modular diaphragm elements for said silencer26US 5,378,435 AGavoni B. G. M. Silenziatori Di Albino Gavoni & C. S.a.s. · 1995
- Muffler20US 4,874,062 AKojima Press Industry Co., Ltd. · 1989