F15B 13/025
Pressure reducing valves
Official title: {Pressure reducing valves}
F15B13/025 (Pressure reducing valves) appears on 78 US grants and 94 published applications in this corpus.
Search patents in F15B- Granted patents
- 78
- Published applications
- 94
- Assignees
- 60
- Inventors
- 221
- Latest grant
- 9 Jun 2026
Filings by year
| Year | Granted patents | Published applications |
|---|---|---|
| 1991 | 1 | 0 |
| 1992 | 0 | 0 |
| 1993 | 0 | 0 |
| 1994 | 0 | 0 |
| 1995 | 0 | 0 |
| 1996 | 0 | 0 |
| 1997 | 0 | 0 |
| 1998 | 0 | 0 |
| 1999 | 0 | 0 |
| 2000 | 0 | 0 |
| 2001 | 1 | 0 |
| 2002 | 0 | 1 |
| 2003 | 1 | 0 |
| 2004 | 0 | 0 |
| 2005 | 0 | 0 |
| 2006 | 0 | 0 |
| 2007 | 0 | 0 |
| 2008 | 0 | 0 |
| 2009 | 0 | 0 |
| 2010 | 0 | 2 |
| 2011 | 0 | 1 |
| 2012 | 1 | 1 |
| 2013 | 0 | 3 |
| 2014 | 0 | 0 |
| 2015 | 2 | 6 |
| 2016 | 2 | 6 |
| 2017 | 4 | 3 |
| 2018 | 2 | 9 |
| 2019 | 6 | 7 |
| 2020 | 13 | 11 |
| 2021 | 7 | 11 |
| 2022 | 8 | 13 |
| 2023 | 7 | 6 |
| 2024 | 10 | 8 |
| 2025 | 11 | 4 |
| 2026 | 2 | 2 |
By publication year. Applications have been published since 2001. 2026 runs to 8 Oct.
Recent patents
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- Energy recovery charging of an accumulator in a low-pressure compensation circuit of an electro-hydrostatic actuator21 Apr 2026US 12,607,205 B2University of Manitoba
- Fork leveling system and method, and telescopic boom forklift9 Sep 2025US 12,410,046 B2Sany Marine Heavy Industry Co., Ltd.
- Load-controlled hydraulic supply for an attachment attached to an agricultural tractor8 Jul 2025US 12,352,292 B2Deere & Company
- Hydraulic system27 May 2025US 12,313,093 B2Hd Hyundai Infracore Co., Ltd.
- Variable blade float3 Sep 2026US 2026/0258636 A1Deere & Company
- Hydraulic Device with a Status Display16 Jul 2026US 2026/0201913 A1Robert Bosch GmbH
- Hydraulic system having at least two hydraulic circuits and two pressure supply devices21 Aug 2025US 2025/0263053 A1Ipgate AG
- Energy Recovery Charging of an Accumulator in a Low-Pressure Compensation Circuit of an Electro-Hydrostatic Actuator21 Aug 2025US 2025/0264116 A1University of Manitoba
- Brake system with at least two hydraulic circuits and at least two pressure supply devices29 May 2025US 2025/0171002 A1Ipgate AG
Most cited
By later US patents
- Hydrostatic transmission with spool valve driven motor15US 9,914,356 B2Parker-Hannifin Corporation · 2018
- Constant pressure hydraulic circuit with relief protection independent of pressure circuit8US 10,349,571 B2Kuhn Krause, Inc. · 2019
- Two-port electrohydraulic counterbalance valve7US 10,683,879 B1Sun Hydraulics, LLC · 2020
- Hydraulic drive system for construction machine5US 9,976,283 B2Hitachi Construction Machinery Tierra Co., Ltd. · 2018
- System for operating a circle drive gear of a machine4US 10,745,885 B2Caterpillar Inc. · 2020