F01N 2550/20
Monitoring artificially aged exhaust systems
F01N2550/20 (Monitoring artificially aged exhaust systems) appears on 60 US grants and 50 published applications in this corpus.
Search patents in F01N- Granted patents
- 60
- Published applications
- 50
- Assignees
- 33
- Inventors
- 141
- Latest grant
- 28 Jul 2026
Filings by year
| Year | Granted patents | Published applications |
|---|---|---|
| 1983 | 1 | 0 |
| 1984 | 2 | 0 |
| 1985 | 0 | 0 |
| 1986 | 0 | 0 |
| 1987 | 0 | 0 |
| 1988 | 1 | 0 |
| 1989 | 0 | 0 |
| 1990 | 0 | 0 |
| 1991 | 0 | 0 |
| 1992 | 0 | 0 |
| 1993 | 0 | 0 |
| 1994 | 0 | 0 |
| 1995 | 2 | 0 |
| 1996 | 1 | 0 |
| 1997 | 1 | 0 |
| 1998 | 1 | 0 |
| 1999 | 2 | 0 |
| 2000 | 1 | 0 |
| 2001 | 2 | 2 |
| 2002 | 3 | 2 |
| 2003 | 3 | 2 |
| 2004 | 1 | 4 |
| 2005 | 0 | 4 |
| 2006 | 3 | 2 |
| 2007 | 5 | 4 |
| 2008 | 2 | 2 |
| 2009 | 2 | 3 |
| 2010 | 2 | 0 |
| 2011 | 2 | 2 |
| 2012 | 0 | 0 |
| 2013 | 0 | 1 |
| 2014 | 3 | 2 |
| 2015 | 1 | 1 |
| 2016 | 0 | 1 |
| 2017 | 2 | 1 |
| 2018 | 0 | 1 |
| 2019 | 2 | 1 |
| 2020 | 1 | 4 |
| 2021 | 2 | 1 |
| 2022 | 3 | 1 |
| 2023 | 3 | 5 |
| 2024 | 3 | 2 |
| 2025 | 2 | 1 |
| 2026 | 1 | 1 |
By publication year. Applications have been published since 2001. 2026 runs to 8 Oct.
Recent patents
- Systems and methods to assess state-of-health of an exhaust gas constituent capture device28 Jul 2026US 12,692,811 B2Cummins Inc.
- Systems and methods for diagnosing component failure18 Nov 2025US 12,473,853 B2Cummins Inc.
- Method for checking an exhaust gas system in a vehicle, and control unit for performing the method29 Apr 2025US 12,286,919 B2Robert Bosch GmbH
- Computer for diagnosing clogging of a probe for a vehicle19 Nov 2024US 12,146,430 B2Vitesco Technologies GmbH
- Systems and methods for diagnosing component failure9 Jul 2024US 12,031,464 B2Cummins Inc.
- Systems and methods for diagnosing component failure28 May 2026US 2026/0146555 A1Cummins Inc.
- Systems and methods to assess state-of-health of an exhaust gas constituent capture device19 Jun 2025US 2025/0198321 A1Cummins Inc.
- Systems and methods for diagnosing component failure26 Sep 2024US 2024/0318585 A1Cummins Inc.
- Systems and methods for diagnosing component failure7 Mar 2024US 2024/0077010 A1Cummins Inc.
- Controller and control method for internal combustion engine14 Dec 2023US 2023/0399970 A1Toyota Jidosha Kabushiki Kaisha
Most cited
By later US patents
- Method and device for cleaning the atmosphere67US 6,190,627 B1Engelhard Corporation · 2001
- Method and device for cleaning the atmosphere67US 6,569,393 B1Engelhard Corporation · 2003
- Process for preparing palladium on carbon catalysts for purification of crude terephthalic acid32US 4,476,242 AStandard Oil Company (Indiana) · 1984
- Method and system for evaluating exhaust on-board diagnostics system30US 6,378,359 B1Ford Global Technologies, LLC · 2002
- Diesel OBD-II system for detection of degradation of catalyst activity30US 6,408,616 B1Ford Global Technologies, LLC · 2002