F02D 41/146
The characteristics being an nox content or concentration
Official title: {the characteristics being an NOx content or concentration}
F02D41/146 (The characteristics being an nox content or concentration) appears on 809 US grants and 827 published applications in this corpus.
Search patents in F02D- Granted patents
- 809
- Published applications
- 827
- Assignees
- 204
- Inventors
- 1,715
- Latest grant
- 6 Oct 2026
Filings by year
| Year | Granted patents | Published applications |
|---|---|---|
| 1989 | 2 | 0 |
| 1990 | 2 | 0 |
| 1991 | 0 | 0 |
| 1992 | 1 | 0 |
| 1993 | 2 | 0 |
| 1994 | 2 | 0 |
| 1995 | 5 | 0 |
| 1996 | 1 | 0 |
| 1997 | 3 | 0 |
| 1998 | 4 | 0 |
| 1999 | 3 | 0 |
| 2000 | 7 | 0 |
| 2001 | 16 | 10 |
| 2002 | 35 | 23 |
| 2003 | 22 | 33 |
| 2004 | 31 | 34 |
| 2005 | 28 | 20 |
| 2006 | 23 | 29 |
| 2007 | 23 | 23 |
| 2008 | 15 | 23 |
| 2009 | 15 | 32 |
| 2010 | 19 | 47 |
| 2011 | 19 | 41 |
| 2012 | 35 | 30 |
| 2013 | 39 | 45 |
| 2014 | 41 | 40 |
| 2015 | 39 | 44 |
| 2016 | 43 | 50 |
| 2017 | 40 | 33 |
| 2018 | 43 | 57 |
| 2019 | 52 | 37 |
| 2020 | 54 | 48 |
| 2021 | 40 | 26 |
| 2022 | 35 | 26 |
| 2023 | 21 | 19 |
| 2024 | 20 | 18 |
| 2025 | 21 | 22 |
| 2026 | 8 | 17 |
By publication year. Applications have been published since 2001. 2026 runs to 8 Oct.
Subgroups
Granted patents
Recent patents
- Engine control system, method for controlling a dual fuel engine, and non-transitory computer-readable medium6 Oct 2026US 12,753,726 B2Cummins Power Generation Inc.
- System and method for adaptive control of air-to-fuel ratio18 Aug 2026US 12,710,014 B2Caterpillar Inc.
- System and method for adaptive control of ammonia-NOx ratio28 Jul 2026US 12,692,810 B2Caterpillar Inc.
- System and method for balancing outputs from multiple cylinder banks of an internal combustion engine14 Jul 2026US 12,680,517 B2Cummins Inc.
- Method for reducing emissions from a hydrogen combustion engine2 Jun 2026US 12,644,403 B2Hyundai Motor Company
- 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
- Low emission, diesel-cycle engine158US 6,470,682 B2The United States of America as represented by the Administrator of the United States Environmental Protection Agency · 2002
- Low emission, diesel-cycle engine146US 6,301,888 B1The United States of America as represented by the Administrator of the Environmental Protection Agency · 2001
- 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