F02M 26/41
Characterised by the arrangement of the recirculation passage in relation to the
Official title: characterised by the arrangement of the recirculation passage in relation to the engine, e.g. to cylinder heads, liners, spark plugs or manifolds; characterised by the arrangement of the recirculation passage in relation to specially adapted combustion chambers
F02M26/41 (Characterised by the arrangement of the recirculation passage in relation to the) appears on 221 US grants and 186 published applications in this corpus.
Search patents in F02M- Granted patents
- 221
- Published applications
- 186
- Assignees
- 99
- Inventors
- 525
- Latest grant
- 26 May 2026
Filings by year
| Year | Granted patents | Published applications |
|---|---|---|
| 1976 | 2 | 0 |
| 1977 | 1 | 0 |
| 1978 | 5 | 0 |
| 1979 | 3 | 0 |
| 1980 | 1 | 0 |
| 1981 | 1 | 0 |
| 1982 | 1 | 0 |
| 1983 | 4 | 0 |
| 1984 | 1 | 0 |
| 1985 | 3 | 0 |
| 1986 | 0 | 0 |
| 1987 | 3 | 0 |
| 1988 | 1 | 0 |
| 1989 | 2 | 0 |
| 1990 | 2 | 0 |
| 1991 | 0 | 0 |
| 1992 | 1 | 0 |
| 1993 | 3 | 0 |
| 1994 | 3 | 0 |
| 1995 | 1 | 0 |
| 1996 | 2 | 0 |
| 1997 | 5 | 0 |
| 1998 | 3 | 0 |
| 1999 | 2 | 0 |
| 2000 | 4 | 0 |
| 2001 | 2 | 2 |
| 2002 | 4 | 7 |
| 2003 | 4 | 3 |
| 2004 | 5 | 8 |
| 2005 | 6 | 5 |
| 2006 | 5 | 1 |
| 2007 | 2 | 3 |
| 2008 | 4 | 3 |
| 2009 | 3 | 5 |
| 2010 | 2 | 4 |
| 2011 | 2 | 8 |
| 2012 | 4 | 4 |
| 2013 | 4 | 8 |
| 2014 | 6 | 8 |
| 2015 | 7 | 5 |
| 2016 | 7 | 19 |
| 2017 | 14 | 13 |
| 2018 | 18 | 14 |
| 2019 | 10 | 19 |
| 2020 | 19 | 15 |
| 2021 | 18 | 12 |
| 2022 | 8 | 6 |
| 2023 | 5 | 3 |
| 2024 | 5 | 7 |
| 2025 | 2 | 3 |
| 2026 | 1 | 1 |
By publication year. Applications have been published since 2001. 2026 runs to 8 Oct.
Recent patents
- Turbine unit for a supercharging device26 May 2026US 12,637,992 B2BorgWarner Inc.
- Engine device10 Jun 2025US 12,326,125 B2Yanmar Holdings Co., Ltd.
- Engine4 Feb 2025US 12,215,641 B2Yanmar Power Technology Co., Ltd.
- Vented pre-chamber ignitor24 Dec 2024US 12,173,640 B2Ford Global Technologies, LLC
- Engine system configured for unburned hydrocarbon (HC) collection from exhaust port3 Dec 2024US 12,158,121 B2Caterpillar Inc.
- Egr system for rotary engine13 Aug 2026US 2026/0235067 A1Mazda Motor Corporation
- Engine4 Dec 2025US 2025/0369408 A1
- Turbine unit for a supercharging device11 Sep 2025US 2025/0283442 A1BorgWarner Inc.
- Engine8 May 2025US 2025/0146446 A1Yanmar Power Technology Co., Ltd.
- Turbulent jet ignition internal combustion engine with pre-chamber having a duct for exhaust gas recirculation21 Nov 2024US 2024/0384678 A1Ferrari S.P. A.
Most cited
By later US patents
- Fast acting exhaust gas recirculation system87US 6,138,649 ASouthwest Research Institute · 2000
- Internal combustion engine41US 5,305,720 AMitsubishi Jidosha Kogyo Kabushiki Kaisha · 1994
- Cylinder head structure in multi-cylinder engine38US 6,513,506 B1Honda Giken Kogyo Kabushiki Kaisha · 2003
- Engine with integral mounted EGR cooler36US 4,258,687 AFord Motor Company · 1981
- Outboard motor with exhaust gas recirculation cooling33US 7,942,138 B1Brunswick Corporation · 2011