F15B 13/02
Fluid distribution or supply devices characterised by their adaptation to the control
Official title: Fluid distribution or supply devices characterised by their adaptation to the control of servomotors
F15B13/02 (Fluid distribution or supply devices characterised by their adaptation to the control) appears on 4,593 US grants and 3,566 published applications in this corpus.
Search patents in F15B- Granted patents
- 4,593
- Published applications
- 3,566
- Assignees
- 1,578
- Inventors
- 7,140
- Latest grant
- 6 Oct 2026
Filings by year
| Year | Granted patents | Published applications |
|---|---|---|
| 1976 | 64 | 0 |
| 1977 | 47 | 0 |
| 1978 | 59 | 0 |
| 1979 | 42 | 0 |
| 1980 | 58 | 0 |
| 1981 | 53 | 0 |
| 1982 | 49 | 0 |
| 1983 | 35 | 0 |
| 1984 | 48 | 0 |
| 1985 | 73 | 0 |
| 1986 | 53 | 0 |
| 1987 | 51 | 0 |
| 1988 | 55 | 0 |
| 1989 | 56 | 0 |
| 1990 | 34 | 0 |
| 1991 | 59 | 0 |
| 1992 | 46 | 0 |
| 1993 | 56 | 0 |
| 1994 | 50 | 0 |
| 1995 | 61 | 0 |
| 1996 | 60 | 0 |
| 1997 | 64 | 0 |
| 1998 | 70 | 0 |
| 1999 | 85 | 0 |
| 2000 | 87 | 0 |
| 2001 | 103 | 30 |
| 2002 | 99 | 77 |
| 2003 | 84 | 96 |
| 2004 | 80 | 92 |
| 2005 | 88 | 88 |
| 2006 | 65 | 65 |
| 2007 | 57 | 83 |
| 2008 | 43 | 89 |
| 2009 | 37 | 95 |
| 2010 | 54 | 87 |
| 2011 | 61 | 62 |
| 2012 | 66 | 104 |
| 2013 | 88 | 140 |
| 2014 | 70 | 114 |
| 2015 | 107 | 184 |
| 2016 | 132 | 180 |
| 2017 | 158 | 219 |
| 2018 | 171 | 257 |
| 2019 | 245 | 247 |
| 2020 | 265 | 251 |
| 2021 | 235 | 194 |
| 2022 | 200 | 181 |
| 2023 | 175 | 207 |
| 2024 | 190 | 173 |
| 2025 | 182 | 153 |
| 2026 | 123 | 98 |
By publication year. Applications have been published since 2001. 2026 runs to 8 Oct.
Subgroups
Granted patents
- F15B 13/04For use with a single servomotor2,928
- F15B 13/06For use with two or more servomotors1,216
- F15B 13/024Pressure relief valves210
- F15B 13/027Check valves162
- F15B 13/022Flow-dividers142
- F15B 13/021Valves for interconnecting the fluid chambers of an actuator139
- F15B 13/025Pressure reducing valves78
- F15B 13/026Pressure compensating valves70
All 11 subgroupsShow fewer
Recent patents
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- Weld cap and plug welds for fluid delivery systems8 Oct 2026US 2026/0309168 A1Compart Systems Pte. Ltd.
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- Method for operating a hydraulic device8 Oct 2026US 2026/0309224 A1Schaeffler Technologies AG & Co. KG
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Most cited
By later US patents
- Magnetic position sensor for measuring linear displacement1,173US 6,670,806 B2Koninklijke Philips Electronics N. V. · 2003
- Hydraulic circuit for automatic transmission1,004US 9,488,197 B2Hyundai Motor Company · 2016
- Moving microdroplets561US 6,130,098 AThe Regents of the University of Michigan · 2000
- Kinesthetic feedback apparatus and method552US 5,396,266 ATechnical Research Associates, Inc. · 1995
- Microscale devices and reactions in microscale devices407US 6,057,149 AUniversity of Michigan · 2000