F15B 15/204
Control means for piston speed or actuating force without external control
Official title: {Control means for piston speed or actuating force without external control, e.g. control valve inside the piston (F15B11/02, F15B15/22 take precedence)}
F15B15/204 (Control means for piston speed or actuating force without external control) appears on 235 US grants and 239 published applications in this corpus.
Search patents in F15B- Granted patents
- 235
- Published applications
- 239
- Assignees
- 164
- Inventors
- 430
- Latest grant
- 25 Aug 2026
Filings by year
| Year | Granted patents | Published applications |
|---|---|---|
| 1976 | 1 | 0 |
| 1977 | 0 | 0 |
| 1978 | 0 | 0 |
| 1979 | 0 | 0 |
| 1980 | 0 | 0 |
| 1981 | 1 | 0 |
| 1982 | 1 | 0 |
| 1983 | 1 | 0 |
| 1984 | 1 | 0 |
| 1985 | 1 | 0 |
| 1986 | 1 | 0 |
| 1987 | 0 | 0 |
| 1988 | 0 | 0 |
| 1989 | 0 | 0 |
| 1990 | 0 | 0 |
| 1991 | 1 | 0 |
| 1992 | 1 | 0 |
| 1993 | 3 | 0 |
| 1994 | 1 | 0 |
| 1995 | 2 | 0 |
| 1996 | 0 | 0 |
| 1997 | 1 | 0 |
| 1998 | 0 | 0 |
| 1999 | 3 | 0 |
| 2000 | 4 | 0 |
| 2001 | 1 | 0 |
| 2002 | 3 | 2 |
| 2003 | 1 | 3 |
| 2004 | 5 | 3 |
| 2005 | 1 | 8 |
| 2006 | 5 | 7 |
| 2007 | 1 | 5 |
| 2008 | 1 | 11 |
| 2009 | 7 | 8 |
| 2010 | 8 | 7 |
| 2011 | 7 | 7 |
| 2012 | 6 | 4 |
| 2013 | 6 | 7 |
| 2014 | 6 | 6 |
| 2015 | 6 | 12 |
| 2016 | 3 | 12 |
| 2017 | 15 | 11 |
| 2018 | 15 | 11 |
| 2019 | 8 | 13 |
| 2020 | 15 | 17 |
| 2021 | 25 | 27 |
| 2022 | 16 | 14 |
| 2023 | 12 | 15 |
| 2024 | 14 | 10 |
| 2025 | 18 | 10 |
| 2026 | 7 | 9 |
By publication year. Applications have been published since 2001. 2026 runs to 8 Oct.
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