F01N 1/086
Having means to impart a whirling motion to the exhaust gases
Official title: {having means to impart a whirling motion to the exhaust gases (with helically or spirally shaped channels F01N1/12)}
F01N1/086 (Having means to impart a whirling motion to the exhaust gases) appears on 99 US grants and 97 published applications in this corpus.
Search patents in F01N- Granted patents
- 99
- Published applications
- 97
- Assignees
- 62
- Inventors
- 208
- Latest grant
- 22 Sep 2026
Filings by year
| Year | Granted patents | Published applications |
|---|---|---|
| 1976 | 2 | 0 |
| 1977 | 0 | 0 |
| 1978 | 1 | 0 |
| 1979 | 1 | 0 |
| 1980 | 0 | 0 |
| 1981 | 0 | 0 |
| 1982 | 1 | 0 |
| 1983 | 0 | 0 |
| 1984 | 0 | 0 |
| 1985 | 1 | 0 |
| 1986 | 0 | 0 |
| 1987 | 0 | 0 |
| 1988 | 1 | 0 |
| 1989 | 0 | 0 |
| 1990 | 0 | 0 |
| 1991 | 0 | 0 |
| 1992 | 1 | 0 |
| 1993 | 1 | 0 |
| 1994 | 0 | 0 |
| 1995 | 1 | 0 |
| 1996 | 0 | 0 |
| 1997 | 2 | 0 |
| 1998 | 2 | 0 |
| 1999 | 3 | 0 |
| 2000 | 0 | 0 |
| 2001 | 1 | 0 |
| 2002 | 2 | 3 |
| 2003 | 2 | 2 |
| 2004 | 3 | 6 |
| 2005 | 7 | 10 |
| 2006 | 2 | 4 |
| 2007 | 2 | 2 |
| 2008 | 3 | 2 |
| 2009 | 2 | 6 |
| 2010 | 1 | 1 |
| 2011 | 6 | 3 |
| 2012 | 4 | 3 |
| 2013 | 1 | 2 |
| 2014 | 4 | 3 |
| 2015 | 5 | 16 |
| 2016 | 6 | 4 |
| 2017 | 11 | 3 |
| 2018 | 1 | 2 |
| 2019 | 1 | 5 |
| 2020 | 1 | 1 |
| 2021 | 3 | 3 |
| 2022 | 2 | 2 |
| 2023 | 5 | 3 |
| 2024 | 0 | 2 |
| 2025 | 6 | 6 |
| 2026 | 1 | 3 |
By publication year. Applications have been published since 2001. 2026 runs to 8 Oct.
Subgroups
Granted patents
Recent patents
- Decomposition chamber for aftertreatment system22 Sep 2026US 12,742,406 B2Cummins Emission Solutions Inc.
- SCR system and engine23 Dec 2025US 12,503,968 B2Weichai Power Co., Ltd.
- Exhaust-gas treatment arrangement2 Sep 2025US 12,404,796 B2Purem GmbH
- Exhaust mixer assembly29 Jul 2025US 12,372,021 B2Cummins Emission Solutions Inc.
- Air-transparent selective sound silencer using ultra-open metamaterial8 Jul 2025US 12,352,190 B2Trustees of Boston University
- Decomposition chamber for aftertreatment system1 Oct 2026US 2026/0298121 A1Cummins Emission Solutions Inc.
- Decomposition chamber for aftertreatment system13 Aug 2026US 2026/0235063 A1Cummins Emission Solutions Inc.
- Mixing device for mixing a reaction medium into a gas stream, exhaust gas path with such a mixing device and internal combustion engine30 Apr 2026US 2026/0117690 A1Rolls-Royce Solutions GmbH
- Exhaust mixer assembly23 Oct 2025US 2025/0327414 A1Cummins Emission Solutions Inc.
- Decomposition chamber for aftertreatment system2 Oct 2025US 2025/0305435 A1Cummins Emission Solutions Inc.
Most cited
By later US patents
- Combination spark arrestor and aspirating muffler129US 4,147,230 ANelson Industries, Inc. · 1979
- Doser and mixer for a vehicle exhaust system38US 9,266,075 B2Faurecia Emissions Control Technologies, USA, LLC · 2016
- Tuned exhaust system for small engines35US 6,959,782 B2Tecumseh Products Company · 2005
- Venturi muffler27US 7,905,319 B22011
- Adjustable sound attenuating device25US 5,183,976 A1993