F15B 2211/40
Flow control
F15B2211/40 (Flow control) appears on 1,910 US grants and 1,614 published applications in this corpus.
Search patents in F15B- Granted patents
- 1,910
- Published applications
- 1,614
- Assignees
- 743
- Inventors
- 3,231
- Latest grant
- 22 Sep 2026
Filings by year
| Year | Granted patents | Published applications |
|---|---|---|
| 1976 | 34 | 0 |
| 1977 | 19 | 0 |
| 1978 | 12 | 0 |
| 1979 | 16 | 0 |
| 1980 | 17 | 0 |
| 1981 | 14 | 0 |
| 1982 | 26 | 0 |
| 1983 | 12 | 0 |
| 1984 | 16 | 0 |
| 1985 | 15 | 0 |
| 1986 | 14 | 0 |
| 1987 | 24 | 0 |
| 1988 | 17 | 0 |
| 1989 | 12 | 0 |
| 1990 | 7 | 0 |
| 1991 | 23 | 0 |
| 1992 | 15 | 0 |
| 1993 | 17 | 0 |
| 1994 | 24 | 0 |
| 1995 | 20 | 0 |
| 1996 | 15 | 0 |
| 1997 | 19 | 0 |
| 1998 | 27 | 0 |
| 1999 | 30 | 0 |
| 2000 | 32 | 0 |
| 2001 | 52 | 6 |
| 2002 | 32 | 27 |
| 2003 | 30 | 49 |
| 2004 | 43 | 34 |
| 2005 | 33 | 42 |
| 2006 | 27 | 38 |
| 2007 | 33 | 47 |
| 2008 | 32 | 30 |
| 2009 | 20 | 32 |
| 2010 | 19 | 30 |
| 2011 | 23 | 43 |
| 2012 | 20 | 36 |
| 2013 | 33 | 44 |
| 2014 | 26 | 44 |
| 2015 | 37 | 94 |
| 2016 | 60 | 71 |
| 2017 | 60 | 88 |
| 2018 | 69 | 94 |
| 2019 | 105 | 115 |
| 2020 | 114 | 133 |
| 2021 | 128 | 107 |
| 2022 | 92 | 109 |
| 2023 | 89 | 90 |
| 2024 | 92 | 81 |
| 2025 | 107 | 90 |
| 2026 | 57 | 40 |
By publication year. Applications have been published since 2001. 2026 runs to 8 Oct.
Subgroups
Granted patents
- F15B 2211/405Characterised by the type of flow control means or valveIndexing code1,352
- F15B 2211/415Characterised by the connections of the flow control means in the circuitIndexing code965
- F15B 2211/42Characterised by the type of actuationIndexing code853
- F15B 2211/45Control of bleed-off flowIndexing code453
- F15B 2211/46Control of flow in the return line, i.e. meter-out controlIndexing code366
- F15B 2211/455Control of flow in the feed line, i.e. meter-in controlIndexing code351
- F15B 2211/41Characterised by the positions of the valve elementIndexing code297
- F15B 2211/47Flow control in one direction onlyIndexing code111
All 9 subgroupsShow fewer
Recent patents
- Valve section and hydraulic valve assembly22 Sep 2026US 12,742,463 B2HAWE Hydraulik SE
- Hydraulic power steering system25 Aug 2026US 12,715,501 B2Hydac New Technologies GmbH
- Temperature regulation system for vehicle hydraulic system25 Aug 2026US 12,716,434 B2Oshkosh Corporation
- Variable dither control system for a fluid actuator25 Aug 2026US 12,716,516 B2Hamilton Sundstrand Corporation
- Hydraulic drive device18 Aug 2026US 12,710,061 B2Kawasaki Jukogyo Kabushiki Kaisha
- Fluid pressure circuit3 Sep 2026US 2026/0258821 A1Eagle Industry Co., Ltd.
- Hauling Vehicle27 Aug 2026US 2026/0249901 A1Hitachi Construction Machinery Co., Ltd.
- Hydraulic system management method for machine control13 Aug 2026US 2026/0234895 A1Deere & Company
- Work Machine13 Aug 2026US 2026/0234907 A1Hitachi Construction Machinery Co., Ltd.
- Integrated Electrohydraulic Actuator30 Jul 2026US 2026/0218734 A1Parker-Hannifin Corporation
Most cited
By later US patents
- Pneumatically operated mechanism1,103US 6,050,172 AEmhart Glass S. A. · 2000
- 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
- Automotive hydraulic system and method for driving a hydraulic accessory in parallel with a power steering unit108US 6,073,536 A2000
- Systems and methods for energy storage and recovery using compressed gas96US 7,832,207 B2SustainX, Inc. · 2010