F02D 9/02
Concerning induction conduits
Official title: concerning induction conduits (throttle valves, or arrangements thereof in conduits F02D9/08)
F02D9/02 (Concerning induction conduits) appears on 1,469 US grants and 1,105 published applications in this corpus.
Search patents in F02D- Granted patents
- 1,469
- Published applications
- 1,105
- Assignees
- 379
- Inventors
- 2,802
- Latest grant
- 25 Aug 2026
Filings by year
| Year | Granted patents | Published applications |
|---|---|---|
| 1976 | 5 | 0 |
| 1977 | 9 | 0 |
| 1978 | 4 | 0 |
| 1979 | 4 | 0 |
| 1980 | 7 | 0 |
| 1981 | 3 | 0 |
| 1982 | 10 | 0 |
| 1983 | 4 | 0 |
| 1984 | 17 | 0 |
| 1985 | 12 | 0 |
| 1986 | 7 | 0 |
| 1987 | 7 | 0 |
| 1988 | 10 | 0 |
| 1989 | 14 | 0 |
| 1990 | 18 | 0 |
| 1991 | 17 | 0 |
| 1992 | 23 | 0 |
| 1993 | 30 | 0 |
| 1994 | 24 | 0 |
| 1995 | 19 | 0 |
| 1996 | 32 | 0 |
| 1997 | 25 | 0 |
| 1998 | 26 | 0 |
| 1999 | 26 | 0 |
| 2000 | 37 | 0 |
| 2001 | 37 | 13 |
| 2002 | 46 | 39 |
| 2003 | 54 | 58 |
| 2004 | 39 | 58 |
| 2005 | 53 | 46 |
| 2006 | 60 | 46 |
| 2007 | 48 | 40 |
| 2008 | 34 | 32 |
| 2009 | 27 | 38 |
| 2010 | 18 | 32 |
| 2011 | 23 | 33 |
| 2012 | 27 | 41 |
| 2013 | 41 | 43 |
| 2014 | 35 | 43 |
| 2015 | 41 | 68 |
| 2016 | 53 | 60 |
| 2017 | 49 | 60 |
| 2018 | 65 | 73 |
| 2019 | 86 | 68 |
| 2020 | 63 | 57 |
| 2021 | 53 | 43 |
| 2022 | 47 | 35 |
| 2023 | 31 | 23 |
| 2024 | 26 | 21 |
| 2025 | 17 | 17 |
| 2026 | 6 | 18 |
By publication year. Applications have been published since 2001. 2026 runs to 8 Oct.
Subgroups
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Most cited
By later US patents
- Air induction control system for variable displacement internal combustion engine75US 5,431,139 AFord Motor Company · 1995
- Electronic throttle control mechanism with gear alignment and mesh maintenance system61US 6,386,178 B1Visteon Global Technologies, Inc. · 2002
- Exhaust gas purifying device for marine engine57US 4,848,082 ASanshin Kogyo Kabushiki Kaisha · 1989
- Gas distribution system57US 5,126,934 ASmart House, L.P. · 1992
- Fail safe throttle positioning system57US 5,429,090 AColtec Industries Inc. · 1995