F15B 2211/3144
The positions being continuously variable
Official title: the positions being continuously variable, e.g. as realised by proportional valves
F15B2211/3144 (The positions being continuously variable) appears on 367 US grants and 289 published applications in this corpus.
Search patents in F15B- Granted patents
- 367
- Published applications
- 289
- Assignees
- 187
- Inventors
- 739
- Latest grant
- 6 Oct 2026
Filings by year
| Year | Granted patents | Published applications |
|---|---|---|
| 1976 | 1 | 0 |
| 1977 | 0 | 0 |
| 1978 | 2 | 0 |
| 1979 | 4 | 0 |
| 1980 | 7 | 0 |
| 1981 | 5 | 0 |
| 1982 | 3 | 0 |
| 1983 | 3 | 0 |
| 1984 | 0 | 0 |
| 1985 | 1 | 0 |
| 1986 | 1 | 0 |
| 1987 | 2 | 0 |
| 1988 | 3 | 0 |
| 1989 | 5 | 0 |
| 1990 | 2 | 0 |
| 1991 | 6 | 0 |
| 1992 | 6 | 0 |
| 1993 | 6 | 0 |
| 1994 | 6 | 0 |
| 1995 | 3 | 0 |
| 1996 | 6 | 0 |
| 1997 | 7 | 0 |
| 1998 | 4 | 0 |
| 1999 | 11 | 0 |
| 2000 | 7 | 0 |
| 2001 | 13 | 2 |
| 2002 | 10 | 4 |
| 2003 | 8 | 15 |
| 2004 | 10 | 15 |
| 2005 | 8 | 12 |
| 2006 | 8 | 11 |
| 2007 | 17 | 16 |
| 2008 | 8 | 14 |
| 2009 | 9 | 13 |
| 2010 | 9 | 13 |
| 2011 | 9 | 11 |
| 2012 | 2 | 2 |
| 2013 | 5 | 8 |
| 2014 | 11 | 5 |
| 2015 | 3 | 6 |
| 2016 | 6 | 1 |
| 2017 | 3 | 6 |
| 2018 | 5 | 11 |
| 2019 | 11 | 12 |
| 2020 | 13 | 10 |
| 2021 | 11 | 19 |
| 2022 | 17 | 19 |
| 2023 | 17 | 19 |
| 2024 | 20 | 23 |
| 2025 | 22 | 15 |
| 2026 | 11 | 7 |
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
- Hydraulic system providing down force on a work implement109US 6,460,623 B1Caterpillar Inc. · 2002
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- Hydraulic circuit with a return line metering valve and method of operation81US 6,467,264 B1HUSCO International, Inc. · 2002
- System and method for controlling an independent metering valve77US 5,960,695 ACaterpillar Inc. · 1999
- Variable flow hydraulic system73US 6,029,445 ACase Corporation · 2000