F02D 41/1461
Of the exhaust gases emitted by the engine
Official title: {of the exhaust gases emitted by the engine}
F02D41/1461 (Of the exhaust gases emitted by the engine) appears on 412 US grants and 422 published applications in this corpus.
Search patents in F02D- Granted patents
- 412
- Published applications
- 422
- Assignees
- 134
- Inventors
- 1,004
- Latest grant
- 18 Aug 2026
Filings by year
| Year | Granted patents | Published applications |
|---|---|---|
| 1989 | 1 | 0 |
| 1990 | 1 | 0 |
| 1991 | 0 | 0 |
| 1992 | 1 | 0 |
| 1993 | 1 | 0 |
| 1994 | 0 | 0 |
| 1995 | 3 | 0 |
| 1996 | 0 | 0 |
| 1997 | 3 | 0 |
| 1998 | 2 | 0 |
| 1999 | 2 | 0 |
| 2000 | 2 | 0 |
| 2001 | 6 | 3 |
| 2002 | 17 | 12 |
| 2003 | 9 | 15 |
| 2004 | 17 | 16 |
| 2005 | 12 | 7 |
| 2006 | 11 | 15 |
| 2007 | 9 | 10 |
| 2008 | 6 | 9 |
| 2009 | 10 | 16 |
| 2010 | 7 | 24 |
| 2011 | 9 | 14 |
| 2012 | 16 | 12 |
| 2013 | 17 | 23 |
| 2014 | 18 | 21 |
| 2015 | 16 | 25 |
| 2016 | 25 | 30 |
| 2017 | 22 | 17 |
| 2018 | 25 | 32 |
| 2019 | 31 | 23 |
| 2020 | 32 | 27 |
| 2021 | 24 | 14 |
| 2022 | 22 | 16 |
| 2023 | 12 | 9 |
| 2024 | 12 | 8 |
| 2025 | 8 | 10 |
| 2026 | 3 | 14 |
By publication year. Applications have been published since 2001. 2026 runs to 8 Oct.
Subgroups
Granted patents
Recent patents
- System and method for adaptive control of air-to-fuel ratio18 Aug 2026US 12,710,014 B2Caterpillar Inc.
- Method for reducing emissions from a hydrogen combustion engine2 Jun 2026US 12,644,403 B2Hyundai Motor Company
- Systems and methods for monitoring nitrogen dioxide variability in an engine aftertreatment system10 Feb 2026US 12,546,242 B1Caterpillar Inc.
- Intake and exhaust system28 Oct 2025US 12,454,923 B2Subaru Corporation
- Engine system21 Oct 2025US 12,448,927 B2Kabushiki Kaisha Toyota Jidoshokki
- Method for operating a drive device for a motor vehicle and corresponding drive device27 Aug 2026US 2026/0251101 A1Audi AG
- Method for Operating an Internal Combustion Engine of a Motor Vehicle, in Particular a Car13 Aug 2026US 2026/0235086 A1Bayerische Motoren Werke Aktiengesellschaft
- Exhaust monitoring apparatus6 Aug 2026US 2026/0226858 A1Toyota Jidosha Kabushiki Kaisha
- System and method for adaptive control of ammonia-nox ratio18 Jun 2026US 2026/0168418 A1Caterpillar Inc.
- System and method for adaptive control of air-to-fuel ratio18 Jun 2026US 2026/0168452 A1Caterpillar Inc.
Most cited
By later US patents
- Differential torque operation for internal combustion engine167US 7,503,312 B2Ford Global Technologies, LLC · 2009
- Exhaust purification device of internal combustion engine131US 5,437,153 AToyota Jidosha Kabushiki Kaisha · 1995
- Multivariable control for an engine131US 7,328,577 B2Honeywell International Inc. · 2008
- NOx emission-control system using a virtual sensor122US 6,882,929 B2Caterpillar Inc. · 2005
- Apparatus and method for internal-combustion engine control121US 5,595,060 AMitsubishi Jidosha Kogyo Kabushiki Kaisha · 1997