F01N 3/2053
By-passing catalytic reactors
Official title: {By-passing catalytic reactors, e.g. to prevent overheating}
F01N3/2053 (By-passing catalytic reactors) appears on 360 US grants and 294 published applications in this corpus.
Search patents in F01N- Granted patents
- 360
- Published applications
- 294
- Assignees
- 160
- Inventors
- 828
- Latest grant
- 6 Oct 2026
Filings by year
| Year | Granted patents | Published applications |
|---|---|---|
| 1976 | 15 | 0 |
| 1977 | 1 | 0 |
| 1978 | 2 | 0 |
| 1979 | 2 | 0 |
| 1980 | 5 | 0 |
| 1981 | 1 | 0 |
| 1982 | 1 | 0 |
| 1983 | 0 | 0 |
| 1984 | 1 | 0 |
| 1985 | 1 | 0 |
| 1986 | 0 | 0 |
| 1987 | 0 | 0 |
| 1988 | 0 | 0 |
| 1989 | 3 | 0 |
| 1990 | 6 | 0 |
| 1991 | 2 | 0 |
| 1992 | 6 | 0 |
| 1993 | 8 | 0 |
| 1994 | 10 | 0 |
| 1995 | 9 | 0 |
| 1996 | 7 | 0 |
| 1997 | 4 | 0 |
| 1998 | 13 | 0 |
| 1999 | 10 | 0 |
| 2000 | 6 | 0 |
| 2001 | 6 | 2 |
| 2002 | 5 | 8 |
| 2003 | 5 | 13 |
| 2004 | 8 | 9 |
| 2005 | 11 | 16 |
| 2006 | 5 | 12 |
| 2007 | 7 | 19 |
| 2008 | 5 | 16 |
| 2009 | 12 | 16 |
| 2010 | 11 | 20 |
| 2011 | 9 | 22 |
| 2012 | 15 | 10 |
| 2013 | 13 | 7 |
| 2014 | 16 | 12 |
| 2015 | 11 | 15 |
| 2016 | 16 | 10 |
| 2017 | 8 | 10 |
| 2018 | 10 | 12 |
| 2019 | 11 | 6 |
| 2020 | 9 | 11 |
| 2021 | 8 | 11 |
| 2022 | 11 | 9 |
| 2023 | 9 | 10 |
| 2024 | 13 | 6 |
| 2025 | 7 | 8 |
| 2026 | 6 | 4 |
By publication year. Applications have been published since 2001. 2026 runs to 8 Oct.
Recent patents
- Engine device6 Oct 2026US 12,753,713 B2Yanmar Holdings Co., Ltd.
- System and method for controlling a cold light off catalyst8 Sep 2026US 12,729,639 B2Fca US LLC
- Systems and methods for controlling the temperature of an aftertreatment system18 Aug 2026US 12,710,006 B2Cummins Inc.
- Cold start catalyst bypass system14 Jul 2026US 12,680,486 B1Fca US LLC
- Exhaust aftertreatment unit5 May 2026US 12,618,348 B2Volvo Truck Corporation
- System and method for controlling a cold light off catalyst3 Sep 2026US 2026/0258742 A1Fca US LLC
- Method for Introducing Heat into at Least One Component of an Exhaust-Gas Aftertreatment Device, Software and Open-Loop or Closed-Loop Control Device29 Jan 2026US 2026/0028927 A1Fraunhofer-Gesellschaft zur Förderung der angewandten Forschung e. V.
- Exhaust gas system15 Jan 2026US 2026/0015957 A1GM Global Technology Operations LLC
- Two-stroke engine assembly having a catalytic converter and method for controlling same8 Jan 2026US 2026/0009364 A1Bombardier Recreational Products Inc.
- Dual-acting valve enabled catalyst bypass27 Nov 2025US 2025/0361826 A1Fca US LLC
Most cited
By later US patents
- Dual converter engine exhaust system for reducing hydrocarbon emissions137US 5,125,231 ACorning Incorporated · 1992
- Exhaust gas purification device for an internal combustion engine114US 5,974,793 AToyota Jidosha Kabushiki Kaisha · 1999
- Device for purifying exhaust gas of engine114US 6,014,859 AToyota Jidosha Kabushiki Kaisha · 2000
- Exhaust gas purification system for an internal combustion engine99US 5,331,809 AToyota Jidosha Kabushiki Kaisha · 1994
- Exhaust gas purification system for an internal combustion engine96US 5,233,830 AToyota Jidosha Kabushiki Kaisha · 1993