F15B 2211/80
Circuits for servomotor systems: other types of control related to particular problems
Official title: Other types of control related to particular problems or conditions
F15B2211/80 (Circuits for servomotor systems: other types of control related to particular problems) appears on 1,856 US grants and 2,104 published applications in this corpus.
Search patents in F15B- Granted patents
- 1,856
- Published applications
- 2,104
- Assignees
- 775
- Inventors
- 3,665
- Latest grant
- 15 Sep 2026
Filings by year
| Year | Granted patents | Published applications |
|---|---|---|
| 1976 | 6 | 0 |
| 1977 | 8 | 0 |
| 1978 | 6 | 0 |
| 1979 | 6 | 0 |
| 1980 | 3 | 0 |
| 1981 | 6 | 0 |
| 1982 | 5 | 0 |
| 1983 | 6 | 0 |
| 1984 | 1 | 0 |
| 1985 | 5 | 0 |
| 1986 | 1 | 0 |
| 1987 | 2 | 0 |
| 1988 | 8 | 0 |
| 1989 | 5 | 0 |
| 1990 | 3 | 0 |
| 1991 | 5 | 0 |
| 1992 | 7 | 0 |
| 1993 | 10 | 0 |
| 1994 | 6 | 0 |
| 1995 | 7 | 0 |
| 1996 | 5 | 0 |
| 1997 | 3 | 0 |
| 1998 | 9 | 0 |
| 1999 | 7 | 0 |
| 2000 | 13 | 0 |
| 2001 | 10 | 1 |
| 2002 | 18 | 20 |
| 2003 | 13 | 25 |
| 2004 | 32 | 23 |
| 2005 | 19 | 25 |
| 2006 | 12 | 29 |
| 2007 | 24 | 34 |
| 2008 | 19 | 46 |
| 2009 | 26 | 51 |
| 2010 | 22 | 37 |
| 2011 | 29 | 45 |
| 2012 | 30 | 31 |
| 2013 | 45 | 83 |
| 2014 | 35 | 122 |
| 2015 | 56 | 103 |
| 2016 | 93 | 89 |
| 2017 | 94 | 116 |
| 2018 | 86 | 128 |
| 2019 | 122 | 157 |
| 2020 | 152 | 156 |
| 2021 | 155 | 183 |
| 2022 | 154 | 166 |
| 2023 | 136 | 137 |
| 2024 | 133 | 112 |
| 2025 | 126 | 122 |
| 2026 | 72 | 63 |
By publication year. Applications have been published since 2001. 2026 runs to 8 Oct.
Subgroups
Granted patents
- F15B 2211/86Control during or prevention of abnormal conditionsIndexing code773
- F15B 2211/88Control measures for saving energyIndexing code442
- F15B 2211/875Control measures for coping with failuresIndexing code395
- F15B 2211/885Control specific to the type of fluidIndexing code324
- F15B 2211/85Control during special operating conditionsIndexing code279
- F15B 2211/857Monitoring of fluid pressure systemsIndexing code151
- F15B 2211/87Detection of failuresIndexing code137
- F15B 2211/865Prevention of failuresIndexing code71
Recent patents
- Hybrid electro-hydraulic load sensing system and control method thereof15 Sep 2026US 12,736,067 B2Chongqing University
- Hydraulic system for work machine, and work machine15 Sep 2026US RE51,031 E1Kubota Corporation
- Redundant hydraulic system1 Sep 2026US 12,722,687 B2Parker Hannfin EMEA S.à.r.l.
- Switching unit and pneumatic system1 Sep 2026US 12,723,604 B2Berlin Heart GmbH
- Hydraulic power steering system25 Aug 2026US 12,715,501 B2Hydac New Technologies GmbH
- Pneumatic automation device, maintenance assembly, pneumatic system, and method17 Sep 2026US 2026/0276012 A1Festo AG & Co.
- Hauling Vehicle27 Aug 2026US 2026/0249901 A1Hitachi Construction Machinery Co., Ltd.
- Transport vehicle20 Aug 2026US 2026/0241846 A1Hitachi Construction Machinery Co., Ltd.
- Leakage cause discrimination system and leakage cause discrimination method20 Aug 2026US 2026/0243281 A1KYB Corporation
- Load dampening system13 Aug 2026US 2026/0235142 A1J. C. Bamford Excavators Limited
Most cited
By later US patents
- Hydraulic circuit for automatic transmission1,004US 9,488,197 B2Hyundai Motor Company · 2016
- Fail-safe actuation system926US 9,239,064 B2Moog Inc. · 2016
- Dynamic activation of pumps of a fluid power system166US 10,040,541 B2The Boeing Company · 2018
- Hydraulic system with cross function regeneration90US 6,502,393 B1HUSCO International, Inc. · 2003
- Hydraulic circuit with a return line metering valve and method of operation81US 6,467,264 B1HUSCO International, Inc. · 2002