F01N 2550/03
Monitoring or diagnosing the deterioration of exhaust systems: of sorbing activity of
Official title: of sorbing activity of adsorbents or absorbents
F01N2550/03 (Monitoring or diagnosing the deterioration of exhaust systems: of sorbing activity of) appears on 299 US grants and 275 published applications in this corpus.
Search patents in F01N- Granted patents
- 299
- Published applications
- 275
- Assignees
- 79
- Inventors
- 625
- Latest grant
- 1 Sep 2026
Filings by year
| Year | Granted patents | Published applications |
|---|---|---|
| 1990 | 1 | 0 |
| 1991 | 0 | 0 |
| 1992 | 0 | 0 |
| 1993 | 0 | 0 |
| 1994 | 0 | 0 |
| 1995 | 3 | 0 |
| 1996 | 4 | 0 |
| 1997 | 1 | 0 |
| 1998 | 7 | 0 |
| 1999 | 3 | 0 |
| 2000 | 7 | 0 |
| 2001 | 14 | 10 |
| 2002 | 28 | 20 |
| 2003 | 19 | 23 |
| 2004 | 21 | 20 |
| 2005 | 12 | 9 |
| 2006 | 18 | 11 |
| 2007 | 2 | 9 |
| 2008 | 5 | 8 |
| 2009 | 6 | 16 |
| 2010 | 8 | 11 |
| 2011 | 7 | 9 |
| 2012 | 18 | 10 |
| 2013 | 4 | 6 |
| 2014 | 13 | 10 |
| 2015 | 5 | 6 |
| 2016 | 8 | 12 |
| 2017 | 8 | 20 |
| 2018 | 10 | 11 |
| 2019 | 22 | 12 |
| 2020 | 8 | 10 |
| 2021 | 7 | 8 |
| 2022 | 6 | 7 |
| 2023 | 6 | 6 |
| 2024 | 9 | 7 |
| 2025 | 6 | 2 |
| 2026 | 3 | 2 |
By publication year. Applications have been published since 2001. 2026 runs to 8 Oct.
Recent patents
- Diesel exhaust fluid sensor simulator device1 Sep 2026US 12,723,533 B1
- Systems and methods to assess state-of-health of an exhaust gas constituent capture device28 Jul 2026US 12,692,811 B2Cummins Inc.
- Purification system21 Jul 2026US 12,687,123 B2Isuzu Motors Limited
- Systems and methods for diagnosing component failure18 Nov 2025US 12,473,853 B2Cummins Inc.
- Systems and methods for cold operation NOx burden reduction23 Sep 2025US 12,421,910 B2Cummins Inc.
- Engine catalyst diagnosis apparatus11 Jun 2026US 2026/0160194 A1Mazda Motor Corporation
- Systems and methods for diagnosing component failure28 May 2026US 2026/0146555 A1Cummins Inc.
- Purification system28 Aug 2025US 2025/0270947 A1Isuzu Motors Limited
- 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 operating passive nitrogen oxide adsorbers in exhaust aftertreatment systems5 Dec 2024US 2024/0401512 A1Cummins Inc.
Most cited
By later US patents
- Exhaust purification device of internal combustion engine131US 5,437,153 AToyota Jidosha Kabushiki Kaisha · 1995
- Method for monitoring the performance of a NO.sub.x trap110US 5,771,685 AFord Global Technologies, LLC · 1998
- Method for monitoring the performance of a no.sub.x trap101US 5,743,084 AFord Global Technologies, LLC · 1998
- Exhaust purification device of internal combustion engine100US 5,483,795 AToyota Jidosha Kabushiki Kaisha · 1996
- Device for detecting deterioration of NO.sub.x absorbent99US 5,713,199 AToyota Jidosha Kabushiki Kaisha · 1998