F15B 2211/31
Characterised by the positions of the valve element
Official title: characterised by the positions of the valve element
F15B2211/31 (Characterised by the positions of the valve element) appears on 1,335 US grants and 1,039 published applications in this corpus.
Search patents in F15B- Granted patents
- 1,335
- Published applications
- 1,039
- Assignees
- 447
- Inventors
- 2,100
- Latest grant
- 6 Oct 2026
Filings by year
| Year | Granted patents | Published applications |
|---|---|---|
| 1976 | 25 | 0 |
| 1977 | 11 | 0 |
| 1978 | 19 | 0 |
| 1979 | 18 | 0 |
| 1980 | 16 | 0 |
| 1981 | 12 | 0 |
| 1982 | 11 | 0 |
| 1983 | 9 | 0 |
| 1984 | 5 | 0 |
| 1985 | 16 | 0 |
| 1986 | 10 | 0 |
| 1987 | 13 | 0 |
| 1988 | 10 | 0 |
| 1989 | 11 | 0 |
| 1990 | 7 | 0 |
| 1991 | 17 | 0 |
| 1992 | 14 | 0 |
| 1993 | 18 | 0 |
| 1994 | 21 | 0 |
| 1995 | 16 | 0 |
| 1996 | 19 | 0 |
| 1997 | 12 | 0 |
| 1998 | 25 | 0 |
| 1999 | 23 | 0 |
| 2000 | 22 | 0 |
| 2001 | 41 | 5 |
| 2002 | 37 | 23 |
| 2003 | 27 | 49 |
| 2004 | 34 | 40 |
| 2005 | 38 | 40 |
| 2006 | 25 | 34 |
| 2007 | 27 | 42 |
| 2008 | 26 | 37 |
| 2009 | 32 | 46 |
| 2010 | 27 | 37 |
| 2011 | 27 | 40 |
| 2012 | 21 | 37 |
| 2013 | 33 | 37 |
| 2014 | 40 | 34 |
| 2015 | 25 | 36 |
| 2016 | 35 | 23 |
| 2017 | 27 | 26 |
| 2018 | 34 | 47 |
| 2019 | 44 | 54 |
| 2020 | 50 | 55 |
| 2021 | 58 | 63 |
| 2022 | 56 | 60 |
| 2023 | 53 | 57 |
| 2024 | 54 | 59 |
| 2025 | 55 | 38 |
| 2026 | 29 | 20 |
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
- Hydraulic power steering system25 Aug 2026US 12,715,501 B2Hydac New Technologies GmbH
- Hydraulic drive apparatus21 Jul 2026US 12,687,182 B2Kawasaki Jukogyo Kabushiki Kaisha
- Control device of a pneumatic element23 Jun 2026US 12,663,024 B2Gimatic S.p.A.
- Volume follow supply9 Jun 2026US 12,650,135 B2Hydac Fluidtechnik GmbH
- Hauling Vehicle27 Aug 2026US 2026/0249901 A1Hitachi Construction Machinery Co., Ltd.
- Transport vehicle20 Aug 2026US 2026/0241846 A1Hitachi Construction Machinery Co., Ltd.
- Work machine6 Aug 2026US 2026/0226927 A1Komatsu Ltd.
- Operator group, especially for an operator vehicle25 Jun 2026US 2026/0176118 A1Manitou Italia S.R.L.
- Work machine25 Jun 2026US 2026/0176842 A1Sumitomo Construction Machinery Co., Ltd.
Most cited
By later US patents
- Pneumatically operated mechanism1,103US 6,050,172 AEmhart Glass S. A. · 2000
- Fluid power distribution and control system111US 10,161,423 B2Sauer-Danfoss ApS · 2018
- Hydraulic system providing down force on a work implement109US 6,460,623 B1Caterpillar Inc. · 2002
- Systems and methods for energy storage and recovery using compressed gas96US 7,832,207 B2SustainX, Inc. · 2010
- Hydraulic system with cross function regeneration90US 6,502,393 B1HUSCO International, Inc. · 2003