Hydraulic System with a Counterbalance Valve Configured as a Meter-Out Valve and Controlled by an Independent Pilot Signal
US-2019301495-A1 · Oct 3, 2019 · US
Systems with load-holding valves
Systems with load-holding valves · Cooperative Patent Classification (CPC)
Engines, pumps, lighting, heating, and mechanical systems.
Related technology areas
Mapped technology topics for this CPC code.
| Metric | Value |
|---|---|
| CPC code | F15B11/003 |
| Official title | {Systems with load-holding valves} |
| Display label | Systems with load-holding valves |
| Total patents | 142 |
Filing trend
Year-over-year patent counts classified under this CPC code.
Filing activity over the last five years is rapidly declining.
| Year | Patents |
|---|---|
| 2015 | 7 |
| 2016 | 14 |
| 2017 | 11 |
| 2018 | 18 |
| 2019 | 20 |
| 2020 | 28 |
| 2021 | 16 |
| 2022 | 6 |
| 2023 | 5 |
| 2024 | 9 |
| 2025 | 4 |
| 2026 | 4 |
Representative patents
Representative publications under this CPC code from precomputed stats, or recent filings when stats are unavailable.
Hydraulic system with a counterbalance valve configured as a meter-out valve and controlled by an independent pilot signal
US-10428845-B1 · Oct 1, 2019 · US
Load sensing valve device
US-10408358-B2 · Sep 10, 2019 · US
Valve device and fluid pressure control device
US-10359057-B2 · Jul 23, 2019 · US
Hydraulic systems for shrinking landing gear
US-2019211848-A1 · Jul 11, 2019 · US
Pilot control mechanism for boom bounce reduction
US-10344783-B2 · Jul 9, 2019 · US
Hydraulic no-back device
US-2019203743-A1 · Jul 4, 2019 · US
Methods and apparatus to enable boom bounce reduction and prevent un-commanded motion in hydraulic systems
US-10323663-B2 · Jun 18, 2019 · US
Vehicle control device
US-2019178264-A1 · Jun 13, 2019 · US
Control method and system for using a pair of independent hydraulic metering valves to reduce boom oscillations
US-2019101137-A1 · Apr 4, 2019 · US
System and method for hydraulic actuator lock valve
US-2018371719-A1 · Dec 27, 2018 · US
Valve device
US-2018347599-A1 · Dec 6, 2018 · US
Fluid pressure control device
US-2018282974-A1 · Oct 4, 2018 · US
Construction machine
US-10047771-B2 · Aug 14, 2018 · US
Control method and system for using a pair of independent hydraulic metering valves to reduce boom oscillations
US-10036407-B2 · Jul 31, 2018 · US
Hydraulic apparatus
US-2018187396-A1 · Jul 5, 2018 · US
Split Spool Valve
US-2018156244-A1 · Jun 7, 2018 · US
Hydraulic system and method for reducing boom bounce with counter-balance protection
US-2018156243-A1 · Jun 7, 2018 · US
Latch Pin Assembly
US-2018148159-A1 · May 31, 2018 · US
Hydraulic steering arrangement for a thruster of a marine vessel
US-9969479-B2 · May 15, 2018 · US
Frequently asked questions
Answers are generated from the same data shown on this page.
- What is CPC F15B11/003?
- CPC F15B11/003 is the Cooperative Patent Classification code for “Systems with load-holding valves.”
- How many patents are filed under CPC F15B11/003 (Systems with load-holding valves)?
- Our database includes 142 publications tagged with this CPC code.
- Is patent activity under CPC F15B11/003 growing?
- Publication counts under this code: 9 in 2024 vs 4 in 2025 (latest complete years).