F01N 3/2892
Exhaust flow directors or the like
Official title: {Exhaust flow directors or the like, e.g. upstream of catalytic device}
F01N3/2892 (Exhaust flow directors or the like) appears on 1,049 US grants and 1,139 published applications in this corpus.
Search patents in F01N- Granted patents
- 1,049
- Published applications
- 1,139
- Assignees
- 363
- Inventors
- 2,216
- Latest grant
- 22 Sep 2026
Filings by year
| Year | Granted patents | Published applications |
|---|---|---|
| 1976 | 10 | 0 |
| 1977 | 5 | 0 |
| 1978 | 3 | 0 |
| 1979 | 2 | 0 |
| 1980 | 6 | 0 |
| 1981 | 2 | 0 |
| 1982 | 5 | 0 |
| 1983 | 7 | 0 |
| 1984 | 1 | 0 |
| 1985 | 1 | 0 |
| 1986 | 1 | 0 |
| 1987 | 0 | 0 |
| 1988 | 1 | 0 |
| 1989 | 1 | 0 |
| 1990 | 1 | 0 |
| 1991 | 6 | 0 |
| 1992 | 4 | 0 |
| 1993 | 4 | 0 |
| 1994 | 6 | 0 |
| 1995 | 4 | 0 |
| 1996 | 8 | 0 |
| 1997 | 11 | 0 |
| 1998 | 9 | 0 |
| 1999 | 11 | 0 |
| 2000 | 4 | 0 |
| 2001 | 7 | 0 |
| 2002 | 3 | 7 |
| 2003 | 4 | 16 |
| 2004 | 8 | 12 |
| 2005 | 5 | 18 |
| 2006 | 11 | 16 |
| 2007 | 6 | 13 |
| 2008 | 9 | 18 |
| 2009 | 11 | 21 |
| 2010 | 9 | 34 |
| 2011 | 9 | 37 |
| 2012 | 20 | 29 |
| 2013 | 29 | 46 |
| 2014 | 35 | 51 |
| 2015 | 48 | 83 |
| 2016 | 64 | 76 |
| 2017 | 62 | 90 |
| 2018 | 66 | 68 |
| 2019 | 82 | 81 |
| 2020 | 81 | 89 |
| 2021 | 90 | 80 |
| 2022 | 68 | 67 |
| 2023 | 71 | 58 |
| 2024 | 60 | 46 |
| 2025 | 54 | 49 |
| 2026 | 24 | 34 |
By publication year. Applications have been published since 2001. 2026 runs to 8 Oct.
Recent patents
- Display driving device comprising an emission circuit and positive feedback circuit22 Sep 2026US 12,742,407 B2Purem GmbH
- Exhaust gas rectifier and exhaust gas purification system1 Sep 2026US 12,723,530 B2Yanmar Holdings Co., Ltd.
- Mixers for exhaust aftertreatment systems25 Aug 2026US 12,716,377 B2Cummins Emission Solutions Inc.
- Decomposition chamber with guide swirl mixer11 Aug 2026US 12,704,086 B2Cummins Emission Solutions Inc.
- Exhaust system and components thereof28 Jul 2026US 12,692,809 B2ECC TEC MSJ Incorporated
- Containerized ultra-low nox diesel engine generator set with roof-mounted selective catalytic reduction system8 Oct 2026US 2026/0309075 A1Industrial Service Solutions WC, Inc.
- Exhaust aftertreatment system24 Sep 2026US 2026/0286878 A1Donaldson Company, Inc.
- Valv e assembly for internal combustion engine system with turbomachinery10 Sep 2026US 2026/0266208 A1Cummins Emission Solutions Inc.
- Exhaust system and features thereof27 Aug 2026US 2026/0251080 A1ECC TEC MSJ Incorporated
- Rapid exhaust catalyst heating using a glow plug27 Aug 2026US 2026/0251081 A1Saudi Arabian Oil Company
Most cited
By later US patents
- Low pressure injection and turbulent mixing in selective catalytic reduction system134US 6,449,947 B1Fleetguard, Inc. · 2002
- Catalyzed SCR filter and emission treatment system132US 7,229,597 B2BASFD Catalysts LLC · 2007
- System and methods for improved emission control of internal combustion engines using pulsed fuel flow93US 7,082,753 B2Catalytica Energy Systems, Inc. · 2006
- Exhaust aftertreatment device, including chemical mixing and acoustic effects87US 6,722,123 B2Fleetguard, Inc. · 2004
- Catalytic abatement system78US 4,054,418 AE. I. Du Pont de Nemours and Company · 1977