F01N 13/141
Double-walled exhaust pipes or housings
Official title: {Double-walled exhaust pipes or housings}
F01N13/141 (Double-walled exhaust pipes or housings) appears on 301 US grants and 293 published applications in this corpus.
Search patents in F01N- Granted patents
- 301
- Published applications
- 293
- Assignees
- 165
- Inventors
- 715
- Latest grant
- 5 May 2026
Filings by year
| Year | Granted patents | Published applications |
|---|---|---|
| 1976 | 1 | 0 |
| 1977 | 1 | 0 |
| 1978 | 2 | 0 |
| 1979 | 3 | 0 |
| 1980 | 6 | 0 |
| 1981 | 2 | 0 |
| 1982 | 2 | 0 |
| 1983 | 4 | 0 |
| 1984 | 0 | 0 |
| 1985 | 1 | 0 |
| 1986 | 2 | 0 |
| 1987 | 5 | 0 |
| 1988 | 0 | 0 |
| 1989 | 2 | 0 |
| 1990 | 1 | 0 |
| 1991 | 3 | 0 |
| 1992 | 4 | 0 |
| 1993 | 4 | 0 |
| 1994 | 2 | 0 |
| 1995 | 4 | 0 |
| 1996 | 3 | 0 |
| 1997 | 4 | 0 |
| 1998 | 4 | 0 |
| 1999 | 2 | 0 |
| 2000 | 2 | 0 |
| 2001 | 2 | 1 |
| 2002 | 1 | 0 |
| 2003 | 0 | 1 |
| 2004 | 1 | 0 |
| 2005 | 0 | 1 |
| 2006 | 0 | 9 |
| 2007 | 2 | 8 |
| 2008 | 3 | 6 |
| 2009 | 2 | 21 |
| 2010 | 6 | 14 |
| 2011 | 9 | 12 |
| 2012 | 11 | 16 |
| 2013 | 10 | 16 |
| 2014 | 22 | 17 |
| 2015 | 9 | 26 |
| 2016 | 15 | 15 |
| 2017 | 19 | 13 |
| 2018 | 9 | 17 |
| 2019 | 18 | 21 |
| 2020 | 23 | 16 |
| 2021 | 15 | 20 |
| 2022 | 18 | 14 |
| 2023 | 20 | 14 |
| 2024 | 12 | 5 |
| 2025 | 6 | 6 |
| 2026 | 4 | 4 |
By publication year. Applications have been published since 2001. 2026 runs to 8 Oct.
Subgroups
Granted patents
Recent patents
- Exhaust aftertreatment unit5 May 2026US 12,618,348 B2Volvo Truck Corporation
- Mixer arrangement for mixing an injection medium injectable by an injector with the exhaust gas of an internal combustion engine5 May 2026US 12,618,350 B2Deere & Company
- Exhaust system and features thereof21 Apr 2026US 12,607,140 B2ECC TEC MSJ Incorporated
- Catalytic converter24 Feb 2026US 12,560,114 B2ECC TEC MSJ Incorporated
- Exhaust device30 Dec 2025US 12,510,009 B2Kawasaki Motors, Ltd.
- Exhaust system and features thereof27 Aug 2026US 2026/0251080 A1ECC TEC MSJ Incorporated
- Exhaust Assembly23 Jul 2026US 2026/0210277 A1AGCO International GmbH
- Vehicle and undercover for use under vehicle floor23 Jul 2026US 2026/0210280 A1Nissan Motor Co., Ltd.
- Exhaust purification device19 Mar 2026US 2026/0078692 A1Subaru Corporation
- Exhaust aftertreatment unit2 Oct 2025US 2025/0305433 A1Volvo Truck Corporation
Most cited
By later US patents
- Catalytic converter having a metallic monolith mounted by a heat-insulating mat of refractory ceramic fibers154US 5,250,269 AMinnesota Mining and Manufacturing Company · 1993
- Method of forming a double wall, air gap exhaust duct component66US 5,170,557 ABenteler Industries, Inc. · 1992
- Automotive catalytic converter exhaust system64US 4,345,430 AManville Service Corporation · 1982
- Exhaust sound and emission control systems56US 7,549,511 B22009
- Rainproof exhaust pipe47US 5,170,020 ADeere & Company · 1992