F01N 5/02
The devices using heat
Official title: the devices using heat
F01N5/02 (The devices using heat) appears on 1,162 US grants and 1,495 published applications in this corpus.
Search patents in F01N- Granted patents
- 1,162
- Published applications
- 1,495
- Assignees
- 503
- Inventors
- 2,570
- Latest grant
- 1 Sep 2026
Filings by year
| Year | Granted patents | Published applications |
|---|---|---|
| 1976 | 4 | 0 |
| 1977 | 2 | 0 |
| 1978 | 1 | 0 |
| 1979 | 0 | 0 |
| 1980 | 0 | 0 |
| 1981 | 0 | 0 |
| 1982 | 0 | 0 |
| 1983 | 3 | 0 |
| 1984 | 3 | 0 |
| 1985 | 1 | 0 |
| 1986 | 3 | 0 |
| 1987 | 1 | 0 |
| 1988 | 4 | 0 |
| 1989 | 3 | 0 |
| 1990 | 3 | 0 |
| 1991 | 7 | 0 |
| 1992 | 4 | 0 |
| 1993 | 3 | 0 |
| 1994 | 5 | 0 |
| 1995 | 6 | 0 |
| 1996 | 2 | 0 |
| 1997 | 5 | 0 |
| 1998 | 6 | 0 |
| 1999 | 6 | 0 |
| 2000 | 7 | 0 |
| 2001 | 9 | 0 |
| 2002 | 6 | 17 |
| 2003 | 11 | 23 |
| 2004 | 17 | 20 |
| 2005 | 13 | 28 |
| 2006 | 23 | 26 |
| 2007 | 20 | 29 |
| 2008 | 10 | 37 |
| 2009 | 21 | 50 |
| 2010 | 23 | 61 |
| 2011 | 24 | 95 |
| 2012 | 43 | 86 |
| 2013 | 48 | 107 |
| 2014 | 71 | 97 |
| 2015 | 84 | 114 |
| 2016 | 66 | 97 |
| 2017 | 86 | 123 |
| 2018 | 90 | 107 |
| 2019 | 94 | 109 |
| 2020 | 97 | 79 |
| 2021 | 75 | 53 |
| 2022 | 49 | 58 |
| 2023 | 42 | 31 |
| 2024 | 32 | 19 |
| 2025 | 18 | 20 |
| 2026 | 11 | 9 |
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
- System, apparatus and method for managing heat transfer in post combustion (CO2 and H2S) gas treating systems21 Jul 2026US 12,685,961 B2
- Hydrogen generator for internal combusion engines16 Jun 2026US 12,655,818 B2MöbiVolt Defense LLC
- Thermoelectric device21 Apr 2026US 12,610,740 B2LG Innotek Co., Ltd.
- 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
- Cold start hybrid system for automotive hydrogen fuel cell packs9 Jul 2026US 2026/0192792 A1International Truck Intellectual Property Company, LLC
- Vehicle with a heat management group of exhaust gases28 May 2026US 2026/0146550 A1
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