F01N 2240/00
Combination or association of two or more different exhaust treating devices, or
Official title: Combination or association of two or more different exhaust treating devices, or of at least one such device with an auxiliary device, not covered by indexing codes F01N2230/00 or F01N2250/00, one of the devices being
F01N2240/00 (Combination or association of two or more different exhaust treating devices, or) appears on 3,864 US grants and 4,411 published applications in this corpus.
Search patents in F01N- Granted patents
- 3,864
- Published applications
- 4,411
- Assignees
- 976
- Inventors
- 7,218
- Latest grant
- 22 Sep 2026
Filings by year
| Year | Granted patents | Published applications |
|---|---|---|
| 1976 | 17 | 0 |
| 1977 | 3 | 0 |
| 1978 | 5 | 0 |
| 1979 | 1 | 0 |
| 1980 | 2 | 0 |
| 1981 | 3 | 0 |
| 1982 | 5 | 0 |
| 1983 | 9 | 0 |
| 1984 | 7 | 0 |
| 1985 | 5 | 0 |
| 1986 | 2 | 0 |
| 1987 | 9 | 0 |
| 1988 | 4 | 0 |
| 1989 | 3 | 0 |
| 1990 | 8 | 0 |
| 1991 | 9 | 0 |
| 1992 | 15 | 0 |
| 1993 | 16 | 0 |
| 1994 | 16 | 0 |
| 1995 | 41 | 0 |
| 1996 | 23 | 0 |
| 1997 | 30 | 0 |
| 1998 | 37 | 0 |
| 1999 | 42 | 0 |
| 2000 | 35 | 0 |
| 2001 | 33 | 16 |
| 2002 | 37 | 55 |
| 2003 | 52 | 79 |
| 2004 | 52 | 117 |
| 2005 | 63 | 109 |
| 2006 | 79 | 123 |
| 2007 | 71 | 139 |
| 2008 | 60 | 165 |
| 2009 | 80 | 209 |
| 2010 | 90 | 201 |
| 2011 | 92 | 199 |
| 2012 | 141 | 166 |
| 2013 | 175 | 217 |
| 2014 | 202 | 199 |
| 2015 | 191 | 198 |
| 2016 | 160 | 198 |
| 2017 | 178 | 215 |
| 2018 | 164 | 241 |
| 2019 | 219 | 247 |
| 2020 | 238 | 290 |
| 2021 | 257 | 236 |
| 2022 | 262 | 267 |
| 2023 | 240 | 201 |
| 2024 | 186 | 133 |
| 2025 | 148 | 117 |
| 2026 | 47 | 74 |
By publication year. Applications have been published since 2001. 2026 runs to 8 Oct.
Subgroups
Granted patents
- F01N 2240/20A flow director or deflectorIndexing code1,046
- F01N 2240/02A heat exchangerIndexing code774
- F01N 2240/16An electric heater, i.e. a resistance heaterIndexing code693
- F01N 2240/36An exhaust flapIndexing code560
- F01N 2240/30A fuel reformerIndexing code301
- F01N 2240/14A fuel burnerIndexing code236
- F01N 2240/28A plasma reactorIndexing code199
- F01N 2240/25An ammonia generatorIndexing code158
All 20 subgroupsShow fewer
- F01N 2240/40A hydrolysis catalystIndexing code134
- F01N 2240/22A condensation chamberIndexing code117
- F01N 2240/04An electricIndexing code112
- F01N 2240/18An adsorber or absorberIndexing code102
- F01N 2240/10A heat accumulatorIndexing code90
- F01N 2240/38An ozone generatorIndexing code51
- F01N 2240/05A magneticIndexing code48
- F01N 2240/26An exhaust gas reservoirIndexing code44
- F01N 2240/34An electrolyserIndexing code35
- F01N 2240/12A thermal reactorIndexing code31
- F01N 2240/06An inertialIndexing code26
- F01N 2240/32A fuel cellIndexing code23
Recent patents
- Electrically heatable honeycomb structure having corrugated layers of different cell density22 Sep 2026US 12,742,405 B2Vitesco Technologies GmbH
- Decomposition chamber for aftertreatment system22 Sep 2026US 12,742,406 B2Cummins Emission Solutions Inc.
- Display driving device comprising an emission circuit and positive feedback circuit22 Sep 2026US 12,742,407 B2Purem GmbH
- Exhaust heat conductor pipe system for scavenging waste heat1 Sep 2026US 12,723,532 B2
- Emissions management for diesel series hybrid powertrains25 Aug 2026US 12,715,426 B2Cummins Inc.
- Exhaust heat recovery device8 Oct 2026US 2026/0309067 A1
- Apparatus for leading off condensed water from an exhaust train24 Sep 2026US 2026/0286872 A1Bmw AG
- Exhaust aftertreatment system24 Sep 2026US 2026/0286878 A1Donaldson Company, Inc.
- System and method for controlled heat exchanger swapping17 Sep 2026US 2026/0275893 A1Innio Waukesha Gas Engines Inc.
- Method for powering a heating device for a catalytic converter3 Sep 2026US 2026/0258741 A1Schaeffler Technologies AG & Co. KG
Most cited
By later US patents
- Exhaust purification device of internal combustion engine199US 5,473,887 AToyota Jidosha Kabushiki Kaisha · 1995
- Compact vacuum insulation176US 5,157,893 AMidwest Research Institute · 1992
- Compact vacuum insulation174US 5,175,975 AMidwest Research Institute · 1993
- Method and apparatus for treating an engine exhaust gas stream154US 6,171,556 B2Engelhard Corporation · 2001
- NOx decreasing apparatus for an internal combustion engine153US 5,412,946 AKabushiki Kaisha Toyota Chuo Kenkyusho · 1995