F01N 2250/02
Filtering and catalytic conversion
Official title: filtering and catalytic conversion
F01N2250/02 (Filtering and catalytic conversion) appears on 531 US grants and 563 published applications in this corpus.
Search patents in F01N- Granted patents
- 531
- Published applications
- 563
- Assignees
- 219
- Inventors
- 1,324
- Latest grant
- 14 Jul 2026
Filings by year
| Year | Granted patents | Published applications |
|---|---|---|
| 1976 | 1 | 0 |
| 1977 | 2 | 0 |
| 1978 | 1 | 0 |
| 1979 | 0 | 0 |
| 1980 | 2 | 0 |
| 1981 | 2 | 0 |
| 1982 | 5 | 0 |
| 1983 | 0 | 0 |
| 1984 | 0 | 0 |
| 1985 | 6 | 0 |
| 1986 | 6 | 0 |
| 1987 | 3 | 0 |
| 1988 | 5 | 0 |
| 1989 | 3 | 0 |
| 1990 | 10 | 0 |
| 1991 | 7 | 0 |
| 1992 | 10 | 0 |
| 1993 | 8 | 0 |
| 1994 | 2 | 0 |
| 1995 | 6 | 0 |
| 1996 | 5 | 0 |
| 1997 | 1 | 0 |
| 1998 | 10 | 0 |
| 1999 | 3 | 0 |
| 2000 | 1 | 0 |
| 2001 | 2 | 3 |
| 2002 | 6 | 16 |
| 2003 | 8 | 15 |
| 2004 | 16 | 29 |
| 2005 | 12 | 37 |
| 2006 | 16 | 22 |
| 2007 | 16 | 26 |
| 2008 | 19 | 28 |
| 2009 | 19 | 33 |
| 2010 | 19 | 28 |
| 2011 | 11 | 21 |
| 2012 | 16 | 15 |
| 2013 | 20 | 11 |
| 2014 | 19 | 17 |
| 2015 | 8 | 28 |
| 2016 | 29 | 23 |
| 2017 | 18 | 22 |
| 2018 | 22 | 34 |
| 2019 | 21 | 40 |
| 2020 | 29 | 16 |
| 2021 | 22 | 24 |
| 2022 | 22 | 29 |
| 2023 | 22 | 14 |
| 2024 | 24 | 14 |
| 2025 | 12 | 11 |
| 2026 | 4 | 7 |
By publication year. Applications have been published since 2001. 2026 runs to 8 Oct.
Recent patents
- Reducing agent supply device, method for controlling reducing agent supply device, and control device14 Jul 2026US 12,680,487 B2Komatsu Ltd.
- Exhaust component14 Jul 2026US 12,680,492 B2Futaba Industrial Co., Ltd.
- Catalytic heater for an exhaust gas system of an internal combustion engine, exhaust gas system and method of operating an exhaust gas system23 Jun 2026US 12,662,955 B2Purem GmbH
- Model predictive control for aftertreatment regeneration3 Feb 2026US 12,540,570 B2Caterpillar Inc.
- Construction machine emission device25 Nov 2025US 12,480,280 B2Yanmar Power Technology Co., Ltd.
- Honeycomb structure20 Aug 2026US 2026/0241375 A1NGK Insulators, Ltd.
- System and method for treatment of an exhaust stream and control system therefor23 Jul 2026US 2026/0210279 A1Scania CV AB
- Exhaust system for fire fighting vehicle2 Jul 2026US 2026/0185471 A1Oshkosh Corporation
- Exhaust system for fire fighting vehicle2 Jul 2026US 2026/0185472 A1Oshkosh Corporation
- Exhaust system for fire fighting vehicle2 Jul 2026US 2026/0185474 A1Oshkosh Corporation
Most cited
By later US patents
- Treatment of diesel exhaust gases207US 4,902,487 AJohnson Matthey PLC · 1990
- Method for purifying exhaust gas of a diesel engine146US 5,746,989 AToyota Jidosha Kabushiki Kaisha · 1998
- Method for regenerating a diesel particulate filter118US 6,594,990 B2Ford Global Technologies, LLC · 2003
- Catalyzed diesel exhaust particulate filter112US 5,100,632 AEngelhard Corporation · 1992
- Exhaust emission control device for a diesel engine106US 4,934,142 AToyota Jidosha Kabushiki Kaisha · 1990