F15B 2211/625
Accumulators
F15B2211/625 (Accumulators) appears on 374 US grants and 411 published applications in this corpus.
Search patents in F15B- Granted patents
- 374
- Published applications
- 411
- Assignees
- 239
- Inventors
- 838
- Latest grant
- 18 Aug 2026
Filings by year
| Year | Granted patents | Published applications |
|---|---|---|
| 1976 | 4 | 0 |
| 1977 | 0 | 0 |
| 1978 | 0 | 0 |
| 1979 | 1 | 0 |
| 1980 | 2 | 0 |
| 1981 | 1 | 0 |
| 1982 | 2 | 0 |
| 1983 | 0 | 0 |
| 1984 | 1 | 0 |
| 1985 | 2 | 0 |
| 1986 | 0 | 0 |
| 1987 | 1 | 0 |
| 1988 | 1 | 0 |
| 1989 | 2 | 0 |
| 1990 | 2 | 0 |
| 1991 | 2 | 0 |
| 1992 | 2 | 0 |
| 1993 | 3 | 0 |
| 1994 | 1 | 0 |
| 1995 | 1 | 0 |
| 1996 | 1 | 0 |
| 1997 | 1 | 0 |
| 1998 | 3 | 0 |
| 1999 | 1 | 0 |
| 2000 | 9 | 0 |
| 2001 | 8 | 2 |
| 2002 | 3 | 4 |
| 2003 | 6 | 5 |
| 2004 | 7 | 4 |
| 2005 | 5 | 9 |
| 2006 | 4 | 3 |
| 2007 | 4 | 12 |
| 2008 | 4 | 5 |
| 2009 | 4 | 19 |
| 2010 | 3 | 13 |
| 2011 | 3 | 6 |
| 2012 | 5 | 9 |
| 2013 | 14 | 21 |
| 2014 | 7 | 24 |
| 2015 | 16 | 15 |
| 2016 | 13 | 22 |
| 2017 | 20 | 19 |
| 2018 | 19 | 21 |
| 2019 | 18 | 16 |
| 2020 | 30 | 28 |
| 2021 | 30 | 24 |
| 2022 | 22 | 33 |
| 2023 | 29 | 28 |
| 2024 | 22 | 25 |
| 2025 | 23 | 30 |
| 2026 | 12 | 14 |
By publication year. Applications have been published since 2001. 2026 runs to 8 Oct.
Recent patents
- Hydraulic distributor with pressure compensator for directional valves18 Aug 2026US 12,710,062 B2Walvoil S.P.A.
- Hydraulic braking energy utilization for emergency steering, braking, charging accumulator(s), and/or work functions to reduce or prevent engine from overspeed, assist acceleration and/or unlimited towing21 Jul 2026US 12,687,181 B2Applied Industrial Technologies, Inc.
- Electrical accumulator system with internal transfer barrier30 Jun 2026US 12,669,029 B2Schlumberger Technology Corporation
- Energy storage and reutilization for a single-rod electro-hydrostatic actuator9 Jun 2026US 12,650,138 B2University of Manitoba
- Apparatus for control of multiple fluid powered actuators26 May 2026US 12,638,028 B2Universal City Studios LLC
- Fluid pressure circuit3 Sep 2026US 2026/0258821 A1Eagle Industry Co., Ltd.
- Hauling Vehicle27 Aug 2026US 2026/0249901 A1Hitachi Construction Machinery Co., Ltd.
- Transport vehicle20 Aug 2026US 2026/0241846 A1Hitachi Construction Machinery Co., Ltd.
- Load dampening system13 Aug 2026US 2026/0235142 A1J. C. Bamford Excavators Limited
- Mobile machine with improved electric powered actuator system6 Aug 2026US 2026/0226710 A1Moog Inc.
Most cited
By later US patents
- Hydraulic control system for downhole tools100US 6,536,530 B2Halliburton Energy Services.Inc. · 2003
- Hydraulic system with cross function regeneration90US 6,502,393 B1HUSCO International, Inc. · 2003
- Pneumo-hydraulic converter for energy storage76US 6,145,311 A2000
- Pneumatic-hydraulic actuator system74US 4,335,867 A1982
- Hydraulic system for supplying hydraulic fluid to a hydraulically operated device alternately at pressures of different value71US 4,142,368 AWelko Industriale S.p.A. · 1979