F02D 41/221
Relating to the failure of actuators or electrically driven elements
Official title: {relating to the failure of actuators or electrically driven elements}
F02D41/221 (Relating to the failure of actuators or electrically driven elements) appears on 1,480 US grants and 1,340 published applications in this corpus.
Search patents in F02D- Granted patents
- 1,480
- Published applications
- 1,340
- Assignees
- 249
- Inventors
- 2,811
- Latest grant
- 29 Sep 2026
Filings by year
| Year | Granted patents | Published applications |
|---|---|---|
| 1983 | 2 | 0 |
| 1984 | 1 | 0 |
| 1985 | 6 | 0 |
| 1986 | 3 | 0 |
| 1987 | 2 | 0 |
| 1988 | 3 | 0 |
| 1989 | 7 | 0 |
| 1990 | 2 | 0 |
| 1991 | 13 | 0 |
| 1992 | 9 | 0 |
| 1993 | 11 | 0 |
| 1994 | 4 | 0 |
| 1995 | 14 | 0 |
| 1996 | 20 | 0 |
| 1997 | 12 | 0 |
| 1998 | 20 | 0 |
| 1999 | 17 | 0 |
| 2000 | 27 | 0 |
| 2001 | 29 | 16 |
| 2002 | 39 | 33 |
| 2003 | 36 | 46 |
| 2004 | 41 | 38 |
| 2005 | 41 | 43 |
| 2006 | 47 | 39 |
| 2007 | 35 | 45 |
| 2008 | 39 | 93 |
| 2009 | 39 | 76 |
| 2010 | 63 | 73 |
| 2011 | 58 | 50 |
| 2012 | 56 | 57 |
| 2013 | 54 | 60 |
| 2014 | 47 | 54 |
| 2015 | 57 | 67 |
| 2016 | 60 | 86 |
| 2017 | 71 | 77 |
| 2018 | 78 | 82 |
| 2019 | 98 | 86 |
| 2020 | 95 | 59 |
| 2021 | 72 | 57 |
| 2022 | 59 | 33 |
| 2023 | 41 | 24 |
| 2024 | 32 | 17 |
| 2025 | 16 | 9 |
| 2026 | 4 | 20 |
By publication year. Applications have been published since 2001. 2026 runs to 8 Oct.
Recent patents
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Most cited
By later US patents
- Internal combustion engine with on-board diagnostic system for detecting impaired fuel injectors83US 5,445,019 AFord Motor Company · 1995
- Hybrid vehicle and method of controlling hybrid vehicle75US 6,563,230 B2Toyota Jidosha Kabushiki Kaisha · 2003
- Method for operating an internal combustion engine67US 6,892,691 B1Robert Bosch GmbH · 2005
- Emission control system for an internal combustion engine65US 5,222,471 AKohler Co. · 1993
- Common-rail fuel injection system and related method62US 5,201,294 ANippondenso Co., Ltd. · 1993