F15B 2211/305
Characterised by the type of valves
Official title: characterised by the type of valves
F15B2211/305 (Characterised by the type of valves) appears on 2,793 US grants and 2,284 published applications in this corpus.
Search patents in F15B- Granted patents
- 2,793
- Published applications
- 2,284
- Assignees
- 938
- Inventors
- 4,179
- Latest grant
- 6 Oct 2026
Filings by year
| Year | Granted patents | Published applications |
|---|---|---|
| 1976 | 51 | 0 |
| 1977 | 30 | 0 |
| 1978 | 27 | 0 |
| 1979 | 30 | 0 |
| 1980 | 30 | 0 |
| 1981 | 21 | 0 |
| 1982 | 30 | 0 |
| 1983 | 23 | 0 |
| 1984 | 20 | 0 |
| 1985 | 25 | 0 |
| 1986 | 19 | 0 |
| 1987 | 26 | 0 |
| 1988 | 29 | 0 |
| 1989 | 16 | 0 |
| 1990 | 16 | 0 |
| 1991 | 34 | 0 |
| 1992 | 31 | 0 |
| 1993 | 27 | 0 |
| 1994 | 38 | 0 |
| 1995 | 28 | 0 |
| 1996 | 23 | 0 |
| 1997 | 23 | 0 |
| 1998 | 44 | 0 |
| 1999 | 39 | 0 |
| 2000 | 50 | 0 |
| 2001 | 76 | 10 |
| 2002 | 56 | 46 |
| 2003 | 51 | 81 |
| 2004 | 70 | 65 |
| 2005 | 62 | 63 |
| 2006 | 44 | 67 |
| 2007 | 52 | 66 |
| 2008 | 48 | 63 |
| 2009 | 34 | 59 |
| 2010 | 39 | 52 |
| 2011 | 49 | 58 |
| 2012 | 30 | 48 |
| 2013 | 44 | 90 |
| 2014 | 58 | 86 |
| 2015 | 66 | 120 |
| 2016 | 75 | 108 |
| 2017 | 98 | 117 |
| 2018 | 106 | 126 |
| 2019 | 140 | 147 |
| 2020 | 170 | 152 |
| 2021 | 143 | 160 |
| 2022 | 133 | 123 |
| 2023 | 112 | 114 |
| 2024 | 112 | 102 |
| 2025 | 121 | 108 |
| 2026 | 74 | 53 |
By publication year. Applications have been published since 2001. 2026 runs to 8 Oct.
Subgroups
Granted patents
Recent patents
- Control method based on a four-chamber hydraulic cylinder6 Oct 2026US 12,753,780 B2Taiyuan University of Technology
- Fluid control assembly and system29 Sep 2026US 12,747,802 B2Precision Planting LLC
- Valve section and hydraulic valve assembly22 Sep 2026US 12,742,463 B2HAWE Hydraulik SE
- 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
- Hydraulic system management method for machine control13 Aug 2026US 2026/0234895 A1Deere & Company
- Work Machine13 Aug 2026US 2026/0234907 A1Hitachi Construction Machinery Co., Ltd.
- Mobile machine with improved electric powered actuator system6 Aug 2026US 2026/0226710 A1Moog Inc.
- Hydraulic Isolation Cylinder-Based System6 Aug 2026US 2026/0226921 A1SRI Energy, Inc.
- Method and system for transferring hydraulic power between a pump and an actuator6 Aug 2026US 2026/0226926 A1Allu Innovation and Research Center Oy
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
- Linear servoactuator with integrated transformer position sensor158US 4,628,499 AScientific-Atlanta, Inc. · 1986
- Force-controlled hydro-elastic actuator139US 6,494,039 B2Massachusetts Institute of Technology · 2002