F15B 2211/7054
Having equal piston areas
F15B2211/7054 (Having equal piston areas) appears on 168 US grants and 154 published applications in this corpus.
Search patents in F15B- Granted patents
- 168
- Published applications
- 154
- Assignees
- 124
- Inventors
- 326
- Latest grant
- 25 Aug 2026
Filings by year
| Year | Granted patents | Published applications |
|---|---|---|
| 1976 | 1 | 0 |
| 1977 | 3 | 0 |
| 1978 | 2 | 0 |
| 1979 | 5 | 0 |
| 1980 | 1 | 0 |
| 1981 | 0 | 0 |
| 1982 | 2 | 0 |
| 1983 | 0 | 0 |
| 1984 | 1 | 0 |
| 1985 | 0 | 0 |
| 1986 | 1 | 0 |
| 1987 | 1 | 0 |
| 1988 | 0 | 0 |
| 1989 | 0 | 0 |
| 1990 | 0 | 0 |
| 1991 | 0 | 0 |
| 1992 | 1 | 0 |
| 1993 | 0 | 0 |
| 1994 | 2 | 0 |
| 1995 | 2 | 0 |
| 1996 | 2 | 0 |
| 1997 | 0 | 0 |
| 1998 | 5 | 0 |
| 1999 | 3 | 0 |
| 2000 | 2 | 0 |
| 2001 | 2 | 1 |
| 2002 | 2 | 2 |
| 2003 | 1 | 2 |
| 2004 | 4 | 4 |
| 2005 | 5 | 1 |
| 2006 | 0 | 3 |
| 2007 | 2 | 0 |
| 2008 | 1 | 7 |
| 2009 | 1 | 5 |
| 2010 | 4 | 2 |
| 2011 | 7 | 5 |
| 2012 | 1 | 3 |
| 2013 | 2 | 2 |
| 2014 | 3 | 6 |
| 2015 | 3 | 8 |
| 2016 | 7 | 6 |
| 2017 | 7 | 10 |
| 2018 | 5 | 16 |
| 2019 | 10 | 21 |
| 2020 | 20 | 13 |
| 2021 | 15 | 4 |
| 2022 | 10 | 17 |
| 2023 | 7 | 4 |
| 2024 | 7 | 3 |
| 2025 | 3 | 8 |
| 2026 | 5 | 1 |
By publication year. Applications have been published since 2001. 2026 runs to 8 Oct.
Recent patents
- Hydraulic power steering system25 Aug 2026US 12,715,501 B2Hydac New Technologies GmbH
- Cylinder/piston assembly with eccentric piston rod2 Jun 2026US 12,644,478 B2Weber-Hydraulik GmbH
- Hydraulic actuator and method for operating5 May 2026US 12,618,420 B2Airbus Operations GmbH
- Micro electro-hydraulic linear actuator and hand of electro-hydraulic driven robot21 Apr 2026US 12,605,850 B2Shenzhen Spherical Fluid Power Technology Co., Ltd.
- Stability and control augmentation system actuator10 Mar 2026US 12,570,393 B2Microtecnica S.R.L.
- Linear actuator assembly and system21 May 2026US 2026/0139694 A1Project Phoenix, LLC
- Hydraulic Cylinder Assembly and Method for Operating a Hydraulic Cylinder Assembly23 Oct 2025US 2025/0327467 A1Robert Bosch GmbH
- Welding machines for pipelines2 Oct 2025US 2025/0303506 A1Ritmo S.P.A.
- Cylinder/piston assembly with eccentric piston rod7 Aug 2025US 2025/0250997 A1Weber-Hydraulik GmbH
- Linear Actuator for Actuating a Process Valve8 May 2025US 2025/0146595 A1Robert Bosch GmbH
Most cited
By later US patents
- Fail-safe actuation system926US 9,239,064 B2Moog Inc. · 2016
- Hydraulic control system for downhole tools100US 6,536,530 B2Halliburton Energy Services.Inc. · 2003
- Regenerative adaptive fluid motor control77US 6,349,543 B12002
- Pneumatic-hydraulic actuator system74US 4,335,867 A1982
- Electro-hydraulic actuator system52US 7,191,593 B1Northrop Grumman Corporation · 2007