Integrated implement downforce control systems, methods, and apparatus
US-10443631-B2 · Oct 15, 2019 · US
Control means for piston speed or actuating force without external control, e.g. control valve inside the piston (F15B11/02, F15B15/22 take precedence)
Control means for piston speed or actuating force without external control, e.g. control valve inside the piston (F15B11/02, F15B15/22 take precedence) · 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 | F15B15/204 |
| Official title | {Control means for piston speed or actuating force without external control, e.g. control valve inside the piston (F15B11/02, F15B15/22 take precedence)} |
| Display label | Control means for piston speed or actuating force without external control, e.g. control valve inside the piston (F15B11/02, F15B15/22 take precedence) |
| Total patents | 200 |
Filing trend
Year-over-year patent counts classified under this CPC code.
Filing activity over the last five years is declining.
| Year | Patents |
|---|---|
| 2015 | 10 |
| 2016 | 10 |
| 2017 | 13 |
| 2018 | 20 |
| 2019 | 11 |
| 2020 | 25 |
| 2021 | 33 |
| 2022 | 27 |
| 2023 | 14 |
| 2024 | 20 |
| 2025 | 14 |
| 2026 | 3 |
Representative patents
Representative publications under this CPC code from precomputed stats, or recent filings when stats are unavailable.
Line rupture safeguard for a hydraulic cylinder
US-2019264715-A1 · Aug 29, 2019 · US
Cylinder device
US-10385889-B2 · Aug 20, 2019 · US
Systems and methods for control and monitoring of actuated valves
US-2019226937-A1 · Jul 25, 2019 · US
Integrated implement downforce control systems, methods, and apparatus
US-10359062-B2 · Jul 23, 2019 · US
Hydraulic device
US-2019085872-A1 · Mar 21, 2019 · US
Pneumatic volume booster
US-10197076-B2 · Feb 5, 2019 · US
Hydraulically actuated piston guided in a cylinder, and hydraulic working tool
US-2018319000-A1 · Nov 8, 2018 · US
Hydraulic displacement control system
US-10087960-B2 · Oct 2, 2018 · US
Automatic transmission
US-2018274600-A1 · Sep 27, 2018 · US
Hydraulic actuating device for a positive-locking shifing element of a transmission
US-10060528-B2 · Aug 28, 2018 · US
Hydraulic tools with rapid advance
US-10054139-B2 · Aug 21, 2018 · US
Cylinder device with force multiplication mechanism
US-10024340-B2 · Jul 17, 2018 · US
Tunable Actuator Joint Modules Having Energy Recovering Quasi-Passive Elastic Actuators with Internal Valve Arrangements
US-2018194000-A1 · Jul 12, 2018 · US
Cylinder apparatus
US-10018191-B2 · Jul 10, 2018 · US
Mistake proof ram air turbine downlock protection
US-10006476-B2 · Jun 26, 2018 · US
Integrated implement downforce control systems, methods, and apparatus
US-2018163752-A1 · Jun 14, 2018 · US
Hydraulic actuator
US-9994304-B2 · Jun 12, 2018 · US
Actuator apparatus and method enabling multiple piston velocities
US-9993953-B2 · Jun 12, 2018 · US
Cylinder device
US-2018156249-A1 · Jun 7, 2018 · US
Frequently asked questions
Answers are generated from the same data shown on this page.
- What is CPC F15B15/204?
- CPC F15B15/204 is the Cooperative Patent Classification code for “Control means for piston speed or actuating force without external control, e.g. control valve inside the piston (F15B11/02, F15B15/22 take precedence).”
- How many patents are filed under CPC F15B15/204 (Control means for piston speed or actuating force without external control, e.g. control valve inside the piston (F15B11/02, F15B15/22 take precedence))?
- Our database includes 200 publications tagged with this CPC code.
- Is patent activity under CPC F15B15/204 growing?
- Publication counts under this code: 20 in 2024 vs 14 in 2025 (latest complete years).