F15B 2211/00
Circuits for servomotor systems
F15B2211/00 (Circuits for servomotor systems) appears on 6,226 US grants and 5,996 published applications in this corpus.
Search patents in F15B- Granted patents
- 6,226
- Published applications
- 5,996
- Assignees
- 1,905
- Inventors
- 9,576
- Latest grant
- 6 Oct 2026
Filings by year
| Year | Granted patents | Published applications |
|---|---|---|
| 1976 | 76 | 0 |
| 1977 | 46 | 0 |
| 1978 | 39 | 0 |
| 1979 | 40 | 0 |
| 1980 | 40 | 0 |
| 1981 | 35 | 0 |
| 1982 | 42 | 0 |
| 1983 | 28 | 0 |
| 1984 | 24 | 0 |
| 1985 | 38 | 0 |
| 1986 | 26 | 0 |
| 1987 | 35 | 0 |
| 1988 | 42 | 0 |
| 1989 | 26 | 0 |
| 1990 | 28 | 0 |
| 1991 | 47 | 0 |
| 1992 | 43 | 0 |
| 1993 | 42 | 0 |
| 1994 | 52 | 0 |
| 1995 | 42 | 0 |
| 1996 | 37 | 0 |
| 1997 | 37 | 0 |
| 1998 | 65 | 0 |
| 1999 | 64 | 0 |
| 2000 | 72 | 0 |
| 2001 | 115 | 14 |
| 2002 | 86 | 67 |
| 2003 | 76 | 112 |
| 2004 | 97 | 103 |
| 2005 | 81 | 105 |
| 2006 | 80 | 128 |
| 2007 | 97 | 153 |
| 2008 | 84 | 138 |
| 2009 | 97 | 168 |
| 2010 | 88 | 162 |
| 2011 | 104 | 143 |
| 2012 | 103 | 150 |
| 2013 | 146 | 232 |
| 2014 | 149 | 246 |
| 2015 | 172 | 336 |
| 2016 | 234 | 325 |
| 2017 | 287 | 334 |
| 2018 | 289 | 399 |
| 2019 | 403 | 417 |
| 2020 | 452 | 451 |
| 2021 | 419 | 428 |
| 2022 | 386 | 351 |
| 2023 | 322 | 311 |
| 2024 | 301 | 285 |
| 2025 | 307 | 276 |
| 2026 | 185 | 162 |
By publication year. Applications have been published since 2001. 2026 runs to 8 Oct.
Subgroups
Granted patents
- F15B 2211/70Output membersIndexing code3,577
- F15B 2211/60Circuit components or control thereforIndexing code3,571
- F15B 2211/30Directional controlIndexing code3,450
- F15B 2211/20Fluid pressure sourceIndexing code3,371
- F15B 2211/40Flow controlIndexing code1,910
- F15B 2211/50Pressure controlIndexing code1,880
- F15B 2211/80Circuits for servomotor systems: other types of control related to particular problemsIndexing code1,856
Recent patents
- Construction machine6 Oct 2026US 12,753,569 B2Hitachi Construction Machinery Co., Ltd.
- Control method based on a four-chamber hydraulic cylinder6 Oct 2026US 12,753,780 B2Taiyuan University of Technology
- Electrohydraulic control device and adjustable hydraulic pump system6 Oct 2026US 12,753,781 B2HAWE Hydraulik SE
- Solenoid concept for pump control of a variable displacement piston pump29 Sep 2026US 12,747,727 B2Hamilton Sundstrand Corporation
- Fluid control assembly and system29 Sep 2026US 12,747,802 B2Precision Planting LLC
- Hydraulic system for a refuse vehicle1 Oct 2026US 2026/0296342 A1Oshkosh Corporation
- Hydraulic system for a vehicle1 Oct 2026US 2026/0296861 A1Oshkosh Corporation
- Pneumatic control device, process valve assembly and process24 Sep 2026US 2026/0286984 A1Festo AG & Co.
- Pneumatic automation device, maintenance assembly, pneumatic system, and method17 Sep 2026US 2026/0276012 A1Festo AG & Co.
- Methods of robust electrohydraulic pressure control with distributed damping17 Sep 2026US 2026/0276103 A1Sunstream Scientific, Inc.
Most cited
By later US patents
- Pneumatically operated mechanism1,103US 6,050,172 AEmhart Glass S. A. · 2000
- Hydraulic circuit for automatic transmission1,004US 9,488,197 B2Hyundai Motor Company · 2016
- Fail-safe actuation system926US 9,239,064 B2Moog Inc. · 2016
- Enhanced computer optimized adaptive suspension system and method196US 6,502,837 B1Kenmar Company Trust · 2003
- Enhanced computer optimized adaptive suspension system and method172US 7,076,351 B2Great Northern Technologies, LLC · 2006