F01N 2240/36
An exhaust flap
Official title: an exhaust flap
F01N2240/36 (An exhaust flap) appears on 560 US grants and 659 published applications in this corpus.
Search patents in F01N- Granted patents
- 560
- Published applications
- 659
- Assignees
- 209
- Inventors
- 1,310
- Latest grant
- 25 Aug 2026
Filings by year
| Year | Granted patents | Published applications |
|---|---|---|
| 1976 | 2 | 0 |
| 1977 | 0 | 0 |
| 1978 | 0 | 0 |
| 1979 | 0 | 0 |
| 1980 | 0 | 0 |
| 1981 | 0 | 0 |
| 1982 | 0 | 0 |
| 1983 | 0 | 0 |
| 1984 | 0 | 0 |
| 1985 | 0 | 0 |
| 1986 | 0 | 0 |
| 1987 | 0 | 0 |
| 1988 | 0 | 0 |
| 1989 | 1 | 0 |
| 1990 | 0 | 0 |
| 1991 | 2 | 0 |
| 1992 | 0 | 0 |
| 1993 | 0 | 0 |
| 1994 | 0 | 0 |
| 1995 | 1 | 0 |
| 1996 | 1 | 0 |
| 1997 | 3 | 0 |
| 1998 | 1 | 0 |
| 1999 | 2 | 0 |
| 2000 | 1 | 0 |
| 2001 | 1 | 1 |
| 2002 | 0 | 1 |
| 2003 | 1 | 1 |
| 2004 | 2 | 4 |
| 2005 | 0 | 6 |
| 2006 | 4 | 5 |
| 2007 | 1 | 7 |
| 2008 | 9 | 26 |
| 2009 | 5 | 28 |
| 2010 | 12 | 29 |
| 2011 | 16 | 30 |
| 2012 | 18 | 24 |
| 2013 | 26 | 30 |
| 2014 | 37 | 43 |
| 2015 | 38 | 37 |
| 2016 | 31 | 35 |
| 2017 | 33 | 49 |
| 2018 | 38 | 58 |
| 2019 | 40 | 42 |
| 2020 | 49 | 69 |
| 2021 | 44 | 46 |
| 2022 | 63 | 37 |
| 2023 | 36 | 20 |
| 2024 | 23 | 14 |
| 2025 | 16 | 8 |
| 2026 | 3 | 9 |
By publication year. Applications have been published since 2001. 2026 runs to 8 Oct.
Recent patents
- Muffler for internal combustion engines25 Aug 2026US 12,716,373 B2Plaggio & C. S.P.A.
- Exhaust system10 Mar 2026US 12,571,340 B2Mazda Motor Corporation
- Methods and systems for an exhaust system27 Jan 2026US 12,535,026 B2Ford Global Technologies, LLC
- Exhaust system for an engine2 Dec 2025US 12,485,997 B2Bombardier Recreational Products Inc.
- Engine device2 Dec 2025US 12,486,793 B2Yanmar Holdings Co., Ltd.
- Exhaust heat recovery device8 Oct 2026US 2026/0309067 A1
- Exhaust gas purification device, exhaust gas purification method, and control device20 Aug 2026US 2026/0243204 A1Komatsu Ltd.
- Switchable exhaust system13 Aug 2026US 2026/0235066 A1Keijtech
- Exhaust Closure Device16 Jul 2026US 2026/0201825 A1
- Catalyst preheating system23 Apr 2026US 2026/0110258 A1Fca US LLC
Most cited
By later US patents
- Exhaust gas control apparatus of an internal combustion engine79US 7,753,039 B2Toyota Jidosha Kabushiki Kaisha · 2010
- Deposition system and method61US 7,419,532 B2Caterpillar Inc. · 2008
- Exhaust emission purification system for diesel engine53US 6,823,660 B2Isuzu Motors Limited · 2004
- Exhaust gas purification system of internal combustion engine52US 5,946,906 AHonda Giken Kogyo Kabushiki Kaisha · 1999
- Apparatus for purifying exhaust gas of diesel engine51US 5,489,319 AMatsushita Electric Industrial Co., Ltd. · 1996