F01N 5/00
Exhaust or silencing apparatus combined or associated with devices profiting by exhaust
Official title: Exhaust or silencing apparatus combined or associated with devices profiting by exhaust energy (using kinetic or wave energy of exhaust gases in exhaust systems for charging F02B)
F01N5/00 (Exhaust or silencing apparatus combined or associated with devices profiting by exhaust) appears on 1,433 US grants and 1,792 published applications in this corpus.
Search patents in F01N- Granted patents
- 1,433
- Published applications
- 1,792
- Assignees
- 590
- Inventors
- 3,129
- Latest grant
- 1 Sep 2026
Filings by year
| Year | Granted patents | Published applications |
|---|---|---|
| 1976 | 5 | 0 |
| 1977 | 4 | 0 |
| 1978 | 1 | 0 |
| 1979 | 2 | 0 |
| 1980 | 3 | 0 |
| 1981 | 0 | 0 |
| 1982 | 1 | 0 |
| 1983 | 4 | 0 |
| 1984 | 7 | 0 |
| 1985 | 4 | 0 |
| 1986 | 7 | 0 |
| 1987 | 3 | 0 |
| 1988 | 6 | 0 |
| 1989 | 7 | 0 |
| 1990 | 6 | 0 |
| 1991 | 9 | 0 |
| 1992 | 6 | 0 |
| 1993 | 4 | 0 |
| 1994 | 8 | 0 |
| 1995 | 8 | 0 |
| 1996 | 3 | 0 |
| 1997 | 7 | 0 |
| 1998 | 6 | 0 |
| 1999 | 7 | 0 |
| 2000 | 7 | 0 |
| 2001 | 10 | 0 |
| 2002 | 7 | 17 |
| 2003 | 14 | 26 |
| 2004 | 19 | 22 |
| 2005 | 14 | 29 |
| 2006 | 24 | 30 |
| 2007 | 20 | 39 |
| 2008 | 14 | 41 |
| 2009 | 23 | 62 |
| 2010 | 24 | 72 |
| 2011 | 29 | 110 |
| 2012 | 50 | 98 |
| 2013 | 61 | 123 |
| 2014 | 80 | 108 |
| 2015 | 97 | 134 |
| 2016 | 77 | 122 |
| 2017 | 100 | 138 |
| 2018 | 104 | 125 |
| 2019 | 106 | 122 |
| 2020 | 120 | 106 |
| 2021 | 97 | 74 |
| 2022 | 70 | 83 |
| 2023 | 67 | 42 |
| 2024 | 43 | 28 |
| 2025 | 24 | 24 |
| 2026 | 14 | 17 |
By publication year. Applications have been published since 2001. 2026 runs to 8 Oct.
Subgroups
Granted patents
Recent patents
- Exhaust heat conductor pipe system for scavenging waste heat1 Sep 2026US 12,723,532 B2
- Methane mitigation system with use of waste heat for power generation25 Aug 2026US 12,714,971 B2Enhanced Energy Group LLC
- Mild-hybrid electric vehicle (MHEV) emissions aftertreatment system18 Aug 2026US 12,710,025 B2Saudi Arabian Oil Company
- System, apparatus and method for managing heat transfer in post combustion (CO2 and H2S) gas treating systems21 Jul 2026US 12,685,961 B2
- Utility vehicle21 Jul 2026US 12,687,224 B2Kubota Corporation
- Exhaust heat recovery device8 Oct 2026US 2026/0309067 A1
- Engine system having recuperated catalyst in exhaust system and method20 Aug 2026US 2026/0243186 A1Caterpillar Inc.
- Fluid reactor device, method for operating a fluid reactor device, method for maintaining a fluid reactor device and method for installing a fluid reactor device30 Jul 2026US 2026/0216640 A1Dürr Systems AG
- Reduction of nox and n2o in the exhaust gas of ship motors operated using nh330 Jul 2026US 2026/0216649 A1
- Cold start hybrid system for automotive hydrogen fuel cell packs9 Jul 2026US 2026/0192792 A1International Truck Intellectual Property Company, LLC
Most cited
By later US patents
- Outlet silencer and heat recovery structures for gas turbine177US 6,851,514 B2Air Handling Engineering Ltd. · 2005
- Compact vacuum insulation176US 5,157,893 AMidwest Research Institute · 1992
- Compact vacuum insulation174US 5,175,975 AMidwest Research Institute · 1993
- Cooking utensil with improved heat retention150US 5,643,485 AMidwest Research Institute · 1997
- Control system for mobile NOx SCR applications125US 6,415,602 B1Engelhard Corporation · 2002