F01N 2550/06
Monitoring or diagnosing the deterioration of exhaust systems: by-pass systems
Official title: By-pass systems
F01N2550/06 (Monitoring or diagnosing the deterioration of exhaust systems: by-pass systems) appears on 62 US grants and 62 published applications in this corpus.
Search patents in F01N- Granted patents
- 62
- Published applications
- 62
- Assignees
- 51
- Inventors
- 146
- Latest grant
- 6 Oct 2026
Filings by year
| Year | Granted patents | Published applications |
|---|---|---|
| 1993 | 1 | 0 |
| 1994 | 1 | 0 |
| 1995 | 0 | 0 |
| 1996 | 1 | 0 |
| 1997 | 0 | 0 |
| 1998 | 1 | 0 |
| 1999 | 0 | 0 |
| 2000 | 1 | 0 |
| 2001 | 3 | 0 |
| 2002 | 1 | 2 |
| 2003 | 1 | 1 |
| 2004 | 0 | 2 |
| 2005 | 1 | 0 |
| 2006 | 2 | 3 |
| 2007 | 1 | 1 |
| 2008 | 0 | 4 |
| 2009 | 1 | 2 |
| 2010 | 1 | 1 |
| 2011 | 2 | 1 |
| 2012 | 2 | 0 |
| 2013 | 2 | 2 |
| 2014 | 3 | 5 |
| 2015 | 2 | 2 |
| 2016 | 2 | 4 |
| 2017 | 1 | 7 |
| 2018 | 4 | 1 |
| 2019 | 4 | 2 |
| 2020 | 0 | 2 |
| 2021 | 2 | 2 |
| 2022 | 1 | 4 |
| 2023 | 6 | 7 |
| 2024 | 8 | 2 |
| 2025 | 4 | 3 |
| 2026 | 3 | 2 |
By publication year. Applications have been published since 2001. 2026 runs to 8 Oct.
Subgroups
Granted patents
Recent patents
- Apparatus for diagnosing a post-processing system6 Oct 2026US 12,753,715 B2AVL Software and Functions GmbH
- System and method for controlling a cold light off catalyst8 Sep 2026US 12,729,639 B2Fca US LLC
- Exhaust system and method of operating the same21 Jul 2026US 12,687,125 B1Saudi Arabian Oil Company
- Valve arrangement for split-flow close-coupled catalyst2 Sep 2025US 12,404,794 B2Cummins Emission Solutions Inc.
- Vehicle with gasoline particulate filter soot regeneration strategy with criteria emission reduction for low NOX emissions19 Aug 2025US 12,392,300 B1GM Global Technology Operations LLC
- System and method for controlling a cold light off catalyst3 Sep 2026US 2026/0258742 A1Fca US LLC
- Apparatus for diagnosing a post-processing system18 Jun 2026US 2026/0168423 A1AVL Software and Functions GmbH
- Systems, devices, and methods for regenerating a particulate filter17 Jul 2025US 2025/0230761 A1Jtsmcdp, LLC
- Dual leg aftertreatment system19 Jun 2025US 2025/0198322 A1Cummins Power Generation Inc.
- Vehicle bypass catalyst diagnostic system2 Jan 2025US 2025/0003362 A1Fca US LLC
Most cited
By later US patents
- Emission control system51US 7,065,958 B2Extengine Transport Systems · 2006
- Method and system for diagnosing deterioration of NOx catalyst43US 6,167,695 ANissan Motor Co., Ltd. · 2001
- Apparatus and method for filtering particulate and reducing NOx emissions32US 6,989,045 B2Illinois Valley Holding Company · 2006
- Failure determination device for humidity sensor and control system for exhaust passage changeover valve28US 6,581,370 B2Honda Giken Kogyo Kabushiki Kaisha · 2003
- Diesel particulate filter monitoring using acoustic sensing27US 6,964,694 B2AVL North America Inc. · 2005