F15B 2211/50527
Using cross-pressure relief valves
Official title: using cross-pressure relief valves
F15B2211/50527 (Using cross-pressure relief valves) appears on 118 US grants and 107 published applications in this corpus.
Search patents in F15B- Granted patents
- 118
- Published applications
- 107
- Assignees
- 64
- Inventors
- 275
- Latest grant
- 9 Jun 2026
Filings by year
| Year | Granted patents | Published applications |
|---|---|---|
| 1976 | 1 | 0 |
| 1977 | 1 | 0 |
| 1978 | 1 | 0 |
| 1979 | 0 | 0 |
| 1980 | 0 | 0 |
| 1981 | 0 | 0 |
| 1982 | 0 | 0 |
| 1983 | 0 | 0 |
| 1984 | 0 | 0 |
| 1985 | 0 | 0 |
| 1986 | 2 | 0 |
| 1987 | 0 | 0 |
| 1988 | 2 | 0 |
| 1989 | 0 | 0 |
| 1990 | 1 | 0 |
| 1991 | 2 | 0 |
| 1992 | 1 | 0 |
| 1993 | 1 | 0 |
| 1994 | 4 | 0 |
| 1995 | 2 | 0 |
| 1996 | 2 | 0 |
| 1997 | 1 | 0 |
| 1998 | 0 | 0 |
| 1999 | 3 | 0 |
| 2000 | 2 | 0 |
| 2001 | 4 | 0 |
| 2002 | 2 | 0 |
| 2003 | 4 | 8 |
| 2004 | 4 | 2 |
| 2005 | 1 | 2 |
| 2006 | 2 | 4 |
| 2007 | 2 | 5 |
| 2008 | 2 | 7 |
| 2009 | 4 | 6 |
| 2010 | 4 | 5 |
| 2011 | 4 | 5 |
| 2012 | 3 | 4 |
| 2013 | 4 | 12 |
| 2014 | 10 | 11 |
| 2015 | 8 | 5 |
| 2016 | 5 | 1 |
| 2017 | 5 | 2 |
| 2018 | 2 | 4 |
| 2019 | 2 | 3 |
| 2020 | 4 | 4 |
| 2021 | 5 | 2 |
| 2022 | 3 | 5 |
| 2023 | 2 | 2 |
| 2024 | 2 | 3 |
| 2025 | 3 | 2 |
| 2026 | 1 | 3 |
By publication year. Applications have been published since 2001. 2026 runs to 8 Oct.
Recent patents
- Hydraulic machine swing system with anti-drift9 Jun 2026US 12,650,003 B2Caterpillar Inc.
- Ride control for work machines3 Jun 2025US 12,320,368 B2Danfoss A/S
- Pressure relief valve assembly, modular pressure relief valve assembly, and hydraulic control assembly having such a pressure relief valve assembly3 Jun 2025US 12,320,437 B2Robert Bosch GmbH
- Hydraulic arrangement with load-holding function and hydraulic arrangement control method27 May 2025US 12,313,104 B2Robert Bosch GmbH
- Pilot operated blow-off valves for hydraulic actuators15 Oct 2024US 12,117,024 B2ClearMotion, Inc.
- Hydraulic System having an Inertia Charging Arrangement25 Jun 2026US 2026/0177086 A1Robert Bosch GmbH
- Pilot operated blow-off valves for hydraulic actuators19 Mar 2026US 2026/0078778 A1ClearMotion, Inc.
- Hydraulic machine swing system with anti-drift29 Jan 2026US 2026/0028797 A1Caterpillar Inc.
- Mobile machine with battery powered actuator system13 Feb 2025US 2025/0052036 A1Moog Inc.
- Pilot operated blow-off valves for hydraulic actuators9 Jan 2025US 2025/0012299 A1ClearMotion, Inc.
Most cited
By later US patents
- Hydraulic system, manifold and volumetric compensator73US 6,519,939 B1M-Mac Actuators, Inc. · 2003
- Electro-hydraulic actuator system52US 7,191,593 B1Northrop Grumman Corporation · 2007
- Safety device for hydraulic closed circuit38US 5,048,294 AHitachi Construction Machinery Co., Ltd. · 1991
- Hydraulic swing motor control circuit36US 4,586,332 ACaterpillar Tractor Co. · 1986
- Swing-frame motor flow and sensed load pressure control system for hydraulic excavator33US 4,938,023 AShin Caterpillar Mitsubishi Ltd. · 1990