F01N 2240/02
A heat exchanger
Official title: a heat exchanger
F01N2240/02 (A heat exchanger) appears on 774 US grants and 808 published applications in this corpus.
Search patents in F01N- Granted patents
- 774
- Published applications
- 808
- Assignees
- 375
- Inventors
- 1,766
- Latest grant
- 1 Sep 2026
Filings by year
| Year | Granted patents | Published applications |
|---|---|---|
| 1976 | 8 | 0 |
| 1977 | 2 | 0 |
| 1978 | 2 | 0 |
| 1979 | 0 | 0 |
| 1980 | 0 | 0 |
| 1981 | 0 | 0 |
| 1982 | 1 | 0 |
| 1983 | 0 | 0 |
| 1984 | 3 | 0 |
| 1985 | 1 | 0 |
| 1986 | 1 | 0 |
| 1987 | 2 | 0 |
| 1988 | 0 | 0 |
| 1989 | 1 | 0 |
| 1990 | 0 | 0 |
| 1991 | 0 | 0 |
| 1992 | 5 | 0 |
| 1993 | 8 | 0 |
| 1994 | 8 | 0 |
| 1995 | 12 | 0 |
| 1996 | 10 | 0 |
| 1997 | 16 | 0 |
| 1998 | 9 | 0 |
| 1999 | 15 | 0 |
| 2000 | 12 | 0 |
| 2001 | 11 | 2 |
| 2002 | 10 | 11 |
| 2003 | 16 | 22 |
| 2004 | 11 | 21 |
| 2005 | 16 | 19 |
| 2006 | 19 | 31 |
| 2007 | 12 | 25 |
| 2008 | 8 | 18 |
| 2009 | 16 | 29 |
| 2010 | 12 | 32 |
| 2011 | 11 | 29 |
| 2012 | 19 | 38 |
| 2013 | 33 | 43 |
| 2014 | 28 | 46 |
| 2015 | 42 | 38 |
| 2016 | 27 | 37 |
| 2017 | 36 | 56 |
| 2018 | 43 | 73 |
| 2019 | 56 | 50 |
| 2020 | 54 | 66 |
| 2021 | 55 | 41 |
| 2022 | 55 | 32 |
| 2023 | 29 | 25 |
| 2024 | 20 | 9 |
| 2025 | 15 | 8 |
| 2026 | 4 | 7 |
By publication year. Applications have been published since 2001. 2026 runs to 8 Oct.
Recent patents
- Exhaust heat conductor pipe system for scavenging waste heat1 Sep 2026US 12,723,532 B2
- Marine methanol inert gas blanketing16 Jun 2026US 12,655,817 B2Caterpillar Inc.
- Conditioning system for a urea solution24 Mar 2026US 12,584,431 B2Errecinque S.R.L.
- Methods and systems for an exhaust system27 Jan 2026US 12,535,026 B2Ford Global Technologies, LLC
- Systems and methods for managing the temperature of an aftertreatment system30 Dec 2025US 12,510,011 B2Caterpillar Inc.
- Exhaust heat recovery device8 Oct 2026US 2026/0309067 A1
- System and method for controlled heat exchanger swapping17 Sep 2026US 2026/0275893 A1Innio Waukesha Gas Engines Inc.
- Engine Assembly20 Aug 2026US 2026/0241341 A1Perkins Engines Company Limited
- Exhaust system for internal combustion engine14 May 2026US 2026/0132726 A1Toyota Jidosha Kabushiki Kaisha
- Source gas conduit with sorbent coating for adsorbing gases from gas stream, with related method29 Jan 2026US 2026/0027518 A1GE Infrastructure Technology LLC
Most cited
By later US patents
- 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
- Cooking utensil with improved heat retention150US 5,643,485 AMidwest Research Institute · 1997
- Exhaust gas purification system for an internal combustion engine133US 5,201,802 AToyota Jidosha Kabushiki Kaisha · 1993