F01N 3/0205
Using heat exchangers
Official title: {using heat exchangers}
F01N3/0205 (Using heat exchangers) appears on 332 US grants and 408 published applications in this corpus.
Search patents in F01N- Granted patents
- 332
- Published applications
- 408
- Assignees
- 204
- Inventors
- 926
- Latest grant
- 24 Mar 2026
Filings by year
| Year | Granted patents | Published applications |
|---|---|---|
| 1976 | 3 | 0 |
| 1977 | 1 | 0 |
| 1978 | 0 | 0 |
| 1979 | 0 | 0 |
| 1980 | 0 | 0 |
| 1981 | 0 | 0 |
| 1982 | 1 | 0 |
| 1983 | 0 | 0 |
| 1984 | 0 | 0 |
| 1985 | 0 | 0 |
| 1986 | 0 | 0 |
| 1987 | 2 | 0 |
| 1988 | 1 | 0 |
| 1989 | 0 | 0 |
| 1990 | 0 | 0 |
| 1991 | 0 | 0 |
| 1992 | 1 | 0 |
| 1993 | 2 | 0 |
| 1994 | 2 | 0 |
| 1995 | 3 | 0 |
| 1996 | 0 | 0 |
| 1997 | 2 | 0 |
| 1998 | 2 | 0 |
| 1999 | 1 | 0 |
| 2000 | 1 | 0 |
| 2001 | 4 | 0 |
| 2002 | 0 | 0 |
| 2003 | 1 | 3 |
| 2004 | 2 | 2 |
| 2005 | 0 | 6 |
| 2006 | 4 | 4 |
| 2007 | 3 | 3 |
| 2008 | 2 | 5 |
| 2009 | 3 | 3 |
| 2010 | 0 | 5 |
| 2011 | 2 | 5 |
| 2012 | 3 | 2 |
| 2013 | 5 | 8 |
| 2014 | 6 | 11 |
| 2015 | 12 | 26 |
| 2016 | 14 | 30 |
| 2017 | 25 | 30 |
| 2018 | 25 | 45 |
| 2019 | 31 | 39 |
| 2020 | 32 | 47 |
| 2021 | 40 | 36 |
| 2022 | 31 | 31 |
| 2023 | 24 | 30 |
| 2024 | 25 | 12 |
| 2025 | 14 | 13 |
| 2026 | 2 | 12 |
By publication year. Applications have been published since 2001. 2026 runs to 8 Oct.
Recent patents
- Engine cooling device24 Mar 2026US 12,584,436 B2Toyota Jidosha Kabushiki Kaisha
- Methods and systems for an exhaust system27 Jan 2026US 12,535,026 B2Ford Global Technologies, LLC
- Systems and methods for a hydrogen zero emissions vehicle2 Dec 2025US 12,486,796 B2Nabors Energy Transition Solutions LLC
- Marine ducted propeller mass flux propulsion system4 Nov 2025US 12,459,616 B2
- Vehicle exhaust assemblies and methods therefor30 Sep 2025US 12,428,983 B2Braun GmbH
- Exhaust heat recovery device8 Oct 2026US 2026/0309067 A1
- Tractor24 Sep 2026US 2026/0286874 A1Kubota Corporation
- System and method for controlled heat exchanger swapping17 Sep 2026US 2026/0275893 A1Innio Waukesha Gas Engines Inc.
- Internal combustion engine3 Sep 2026US 2026/0258740 A1Mitsubishi Heavy Industries Engine & Turbocharger, Ltd.
- Post-capture carbon dioxide processing and storage16 Jul 2026US 2026/0199830 A1Valero Services, Inc.
Most cited
By later US patents
- Onboard heater of auxiliary systems using exhaust gases and associated methods69US 11,428,165 B2BJ Energy Solutions, LLC · 2022
- Low NO.sub.x cogeneration process and system39US 5,224,334 ARadian Corporation · 1993
- Ceramic filter construction for use in catalytic incineration system32US 5,143,700 AAnguil Environmental Systems, Inc. · 1992
- Exhaust heat exchanger32US 6,269,870 B1Behr GmbH & Co. · 2001
- Disproportionation resistant metal hydride alloys for use at high temperatures in catalytic converters31US 5,673,556 AErgenics, Inc. · 1997