F01N 3/0233
Periodically cleaning filter by blowing a gas through the filter in a
Official title: {periodically cleaning filter by blowing a gas through the filter in a direction opposite to exhaust flow, e.g. exposing filter to engine air intake}
F01N3/0233 (Periodically cleaning filter by blowing a gas through the filter in a) appears on 172 US grants and 157 published applications in this corpus.
Search patents in F01N- Granted patents
- 172
- Published applications
- 157
- Assignees
- 96
- Inventors
- 396
- Latest grant
- 30 Jun 2026
Filings by year
| Year | Granted patents | Published applications |
|---|---|---|
| 1977 | 1 | 0 |
| 1978 | 0 | 0 |
| 1979 | 0 | 0 |
| 1980 | 0 | 0 |
| 1981 | 1 | 0 |
| 1982 | 1 | 0 |
| 1983 | 0 | 0 |
| 1984 | 0 | 0 |
| 1985 | 0 | 0 |
| 1986 | 0 | 0 |
| 1987 | 0 | 0 |
| 1988 | 1 | 0 |
| 1989 | 5 | 0 |
| 1990 | 2 | 0 |
| 1991 | 2 | 0 |
| 1992 | 2 | 0 |
| 1993 | 5 | 0 |
| 1994 | 3 | 0 |
| 1995 | 3 | 0 |
| 1996 | 2 | 0 |
| 1997 | 6 | 0 |
| 1998 | 5 | 0 |
| 1999 | 4 | 0 |
| 2000 | 1 | 0 |
| 2001 | 2 | 4 |
| 2002 | 4 | 11 |
| 2003 | 11 | 9 |
| 2004 | 7 | 13 |
| 2005 | 3 | 5 |
| 2006 | 6 | 11 |
| 2007 | 8 | 7 |
| 2008 | 8 | 6 |
| 2009 | 2 | 6 |
| 2010 | 5 | 5 |
| 2011 | 4 | 6 |
| 2012 | 6 | 5 |
| 2013 | 4 | 4 |
| 2014 | 2 | 3 |
| 2015 | 2 | 19 |
| 2016 | 4 | 6 |
| 2017 | 6 | 10 |
| 2018 | 9 | 7 |
| 2019 | 10 | 4 |
| 2020 | 4 | 3 |
| 2021 | 3 | 1 |
| 2022 | 5 | 6 |
| 2023 | 4 | 2 |
| 2024 | 4 | 1 |
| 2025 | 4 | 1 |
| 2026 | 1 | 2 |
By publication year. Applications have been published since 2001. 2026 runs to 8 Oct.
Recent patents
- Engine shutoff profile for hybrid vehicle gasoline particulate filter regeneration30 Jun 2026US 12,669,095 B2Fca US LLC
- Systems and methods for filter regeneration with cylinder deactivation16 Dec 2025US 12,497,927 B2Cummins Inc.
- Hydraulic cleaning apparatus for particulate matter reduction device with rapid drying and differential pressure measurement capability25 Nov 2025US 12,480,430 B1Hi-Tech Diesel Corp.
- Aftertreatment heat up strategies21 Oct 2025US 12,448,908 B2Eaton Intelligent Power Limited
- Exhaust gas cleaning system and method for cleaning exhaust gas and use of exhaust gas cleaning system25 Feb 2025US 12,234,756 B2Alfa Laval Corporate AB
- Engine system27 Aug 2026US 2026/0251110 A1Subaru Corporation
- Engine shutoff profile for hybrid vehicle gasoline particulate filter regeneration28 May 2026US 2026/0146571 A1Fca US LLC
- Aftertreatment heat up strategies13 Feb 2025US 2025/0052180 A1Eaton Intelligent Power Limited
- Systems and methods for filter regeneration with cylinder deactivation13 Jun 2024US 2024/0191667 A1Cummins Inc.
- Systems and methods for particulate filter regeneration with cylinder deactivation21 Dec 2023US 2023/0407804 A1Cummins Inc.
Most cited
By later US patents
- Method and apparatus for emission control148US 6,314,722 B1Matros Technologies, Inc. · 2001
- Exhaust gas purifying apparatus built-in to a muffler for a diesel engine76US 4,916,897 AToyota Jidosha Kabushiki Kaisha · 1990
- Back-flushable filtration device and method of forming and using same76US 5,114,581 ACeraMem Corporation · 1992
- Diesel engine exhaust gas recirculation system for NO.sub.x control incorporating a compressed air regenerative particulate control system76US 5,426,936 ACeraMem Corporation · 1995
- Catalytic filtration device and method75US 5,221,484 ACeraMem Separations Limited Partnership · 1993