F02D 41/0045
Estimating, calculating or determining the purging rate, amount, flow or concentration
Official title: {Estimating, calculating or determining the purging rate, amount, flow or concentration}
F02D41/0045 (Estimating, calculating or determining the purging rate, amount, flow or concentration) appears on 397 US grants and 295 published applications in this corpus.
Search patents in F02D- Granted patents
- 397
- Published applications
- 295
- Assignees
- 82
- Inventors
- 607
- Latest grant
- 28 Apr 2026
Filings by year
| Year | Granted patents | Published applications |
|---|---|---|
| 1987 | 2 | 0 |
| 1988 | 1 | 0 |
| 1989 | 0 | 0 |
| 1990 | 0 | 0 |
| 1991 | 2 | 0 |
| 1992 | 5 | 0 |
| 1993 | 9 | 0 |
| 1994 | 12 | 0 |
| 1995 | 12 | 0 |
| 1996 | 10 | 0 |
| 1997 | 16 | 0 |
| 1998 | 6 | 0 |
| 1999 | 7 | 0 |
| 2000 | 15 | 0 |
| 2001 | 12 | 4 |
| 2002 | 9 | 6 |
| 2003 | 12 | 14 |
| 2004 | 13 | 10 |
| 2005 | 7 | 14 |
| 2006 | 10 | 8 |
| 2007 | 11 | 17 |
| 2008 | 17 | 6 |
| 2009 | 2 | 10 |
| 2010 | 6 | 7 |
| 2011 | 4 | 11 |
| 2012 | 7 | 3 |
| 2013 | 4 | 8 |
| 2014 | 10 | 7 |
| 2015 | 7 | 14 |
| 2016 | 11 | 19 |
| 2017 | 16 | 20 |
| 2018 | 23 | 17 |
| 2019 | 18 | 31 |
| 2020 | 30 | 33 |
| 2021 | 36 | 21 |
| 2022 | 17 | 5 |
| 2023 | 10 | 5 |
| 2024 | 6 | 2 |
| 2025 | 1 | 0 |
| 2026 | 1 | 3 |
By publication year. Applications have been published since 2001. 2026 runs to 8 Oct.
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Most cited
By later US patents
- Engine system and method with cylinder deactivation106US 6,978,204 B2Ford Global Technologies, LLC · 2005
- Vehicle fuel management system69US 6,877,488 B2Nartron Corporation · 2005
- System for controlling valve timing of an engine with cylinder deactivation69US 7,249,583 B2Ford Global Technologies, LLC · 2007
- Regulation of engine parameters in response to vapor recovery purge systems66US 4,748,959 AFord Motor Company · 1988
- System and method for engine with fuel vapor purging58US 7,302,933 B2Ford Global Technologies, LLC · 2007