F01N 3/28
Construction of catalytic reactors
F01N3/28 (Construction of catalytic reactors) appears on 5,273 US grants and 4,951 published applications in this corpus.
Search patents in F01N- Granted patents
- 5,273
- Published applications
- 4,951
- Assignees
- 1,192
- Inventors
- 8,786
- Latest grant
- 6 Oct 2026
Filings by year
| Year | Granted patents | Published applications |
|---|---|---|
| 1976 | 71 | 0 |
| 1977 | 30 | 0 |
| 1978 | 35 | 0 |
| 1979 | 23 | 0 |
| 1980 | 36 | 0 |
| 1981 | 35 | 0 |
| 1982 | 39 | 0 |
| 1983 | 32 | 0 |
| 1984 | 19 | 0 |
| 1985 | 23 | 0 |
| 1986 | 20 | 0 |
| 1987 | 28 | 0 |
| 1988 | 32 | 0 |
| 1989 | 45 | 0 |
| 1990 | 46 | 0 |
| 1991 | 57 | 0 |
| 1992 | 85 | 0 |
| 1993 | 63 | 0 |
| 1994 | 76 | 0 |
| 1995 | 105 | 0 |
| 1996 | 78 | 0 |
| 1997 | 78 | 0 |
| 1998 | 92 | 0 |
| 1999 | 98 | 0 |
| 2000 | 83 | 0 |
| 2001 | 93 | 46 |
| 2002 | 68 | 120 |
| 2003 | 101 | 144 |
| 2004 | 94 | 155 |
| 2005 | 69 | 144 |
| 2006 | 75 | 167 |
| 2007 | 84 | 153 |
| 2008 | 91 | 144 |
| 2009 | 95 | 180 |
| 2010 | 125 | 154 |
| 2011 | 105 | 168 |
| 2012 | 136 | 138 |
| 2013 | 140 | 138 |
| 2014 | 158 | 221 |
| 2015 | 169 | 238 |
| 2016 | 193 | 225 |
| 2017 | 207 | 304 |
| 2018 | 206 | 278 |
| 2019 | 276 | 289 |
| 2020 | 265 | 304 |
| 2021 | 265 | 290 |
| 2022 | 270 | 303 |
| 2023 | 222 | 218 |
| 2024 | 190 | 193 |
| 2025 | 169 | 132 |
| 2026 | 78 | 105 |
By publication year. Applications have been published since 2001. 2026 runs to 8 Oct.
Subgroups
Granted patents
- F01N 3/2803Characterised by structure, by material or by manufacturing of catalyst support2,340
- F01N 3/2839Arrangements for mounting catalyst support in housing1,285
- F01N 3/2892Exhaust flow directors or the like1,049
- F01N 3/2882Catalytic reactors combined or associated with other devices838
- F01N 3/2896Liquid catalyst carrier113
Recent patents
- Mixing tube for exhaust system and operating strategy for same6 Oct 2026US 12,753,714 B2Caterpillar Inc.
- Layered tri-metallic catalytic article and method of manufacturing the catalytic article29 Sep 2026US 12,746,532 B2BASF Mobile Emissions Catalysts LLC
- Exhaust gas purification device and method for manufacturing exhaust gas purification device29 Sep 2026US 12,746,533 B2Cataler Corporation
- Method for manufacturing exhaust gas purification catalyst29 Sep 2026US 12,746,538 B2Cataler Corporation
- Electrically heatable honeycomb structure having corrugated layers of different cell density22 Sep 2026US 12,742,405 B2Vitesco Technologies GmbH
- Exhaust purification device8 Oct 2026US 2026/0307009 A1Mazda Motor Corporation
- Containerized ultra-low nox diesel engine generator set with roof-mounted selective catalytic reduction system8 Oct 2026US 2026/0309075 A1Industrial Service Solutions WC, Inc.
- Catalytic materials comprising fe-containing zeolitic material for the treatment of an exhaust gas1 Oct 2026US 2026/0295569 A1
- Composite of manganese-based oxide and zeolite useful as nh3-scr catalyst24 Sep 2026US 2026/0284594 A1
- Exhaust aftertreatment system24 Sep 2026US 2026/0286878 A1Donaldson Company, Inc.
Most cited
By later US patents
- Treatment of diesel exhaust gases207US 4,902,487 AJohnson Matthey PLC · 1990
- Flexible nonwoven mat204US 5,380,580 AMinnesota Mining and Manufacturing Company · 1995
- Compact vacuum insulation176US 5,157,893 AMidwest Research Institute · 1992
- Compact vacuum insulation174US 5,175,975 AMidwest Research Institute · 1993
- Catalytic converter having a metallic monolith mounted by a heat-insulating mat of refractory ceramic fibers154US 5,250,269 AMinnesota Mining and Manufacturing Company · 1993