F04B 49/20
Control: by changing the driving speed
Official title: by changing the driving speed
F04B49/20 (Control: by changing the driving speed) appears on 809 US grants and 917 published applications in this corpus.
Search patents in F04B- Granted patents
- 809
- Published applications
- 917
- Assignees
- 534
- Inventors
- 1,794
- Latest grant
- 22 Sep 2026
Filings by year
| Year | Granted patents | Published applications |
|---|---|---|
| 1976 | 8 | 0 |
| 1977 | 2 | 0 |
| 1978 | 5 | 0 |
| 1979 | 4 | 0 |
| 1980 | 4 | 0 |
| 1981 | 2 | 0 |
| 1982 | 10 | 0 |
| 1983 | 4 | 0 |
| 1984 | 4 | 0 |
| 1985 | 8 | 0 |
| 1986 | 8 | 0 |
| 1987 | 9 | 0 |
| 1988 | 4 | 0 |
| 1989 | 6 | 0 |
| 1990 | 3 | 0 |
| 1991 | 4 | 0 |
| 1992 | 4 | 0 |
| 1993 | 3 | 0 |
| 1994 | 1 | 0 |
| 1995 | 3 | 0 |
| 1996 | 0 | 0 |
| 1997 | 2 | 0 |
| 1998 | 2 | 0 |
| 1999 | 2 | 0 |
| 2000 | 3 | 0 |
| 2001 | 3 | 1 |
| 2002 | 8 | 9 |
| 2003 | 11 | 5 |
| 2004 | 2 | 10 |
| 2005 | 4 | 6 |
| 2006 | 7 | 7 |
| 2007 | 4 | 14 |
| 2008 | 0 | 6 |
| 2009 | 6 | 9 |
| 2010 | 9 | 13 |
| 2011 | 5 | 17 |
| 2012 | 8 | 17 |
| 2013 | 11 | 26 |
| 2014 | 12 | 37 |
| 2015 | 21 | 39 |
| 2016 | 15 | 63 |
| 2017 | 33 | 75 |
| 2018 | 49 | 76 |
| 2019 | 78 | 75 |
| 2020 | 63 | 52 |
| 2021 | 69 | 81 |
| 2022 | 49 | 68 |
| 2023 | 66 | 82 |
| 2024 | 61 | 57 |
| 2025 | 61 | 38 |
| 2026 | 49 | 34 |
By publication year. Applications have been published since 2001. 2026 runs to 8 Oct.
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