Oil exchange in hydraulically operated and electro-hydraulically operated hydraulic valves
US-10100849-B2 · Oct 16, 2018 · US
operated by fluid pressure {(F15B13/0401, F15B13/0416 take precedence)}
operated by fluid pressure {(F15B13/0401, F15B13/0416 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 | F15B13/042 |
| Official title | operated by fluid pressure {(F15B13/0401, F15B13/0416 take precedence)} |
| Display label | operated by fluid pressure {(F15B13/0401, F15B13/0416 take precedence)} |
| Total patents | 269 |
Filing trend
Year-over-year patent counts classified under this CPC code.
Filing activity over the last five years is stable.
| Year | Patents |
|---|---|
| 2015 | 17 |
| 2016 | 18 |
| 2017 | 18 |
| 2018 | 18 |
| 2019 | 28 |
| 2020 | 33 |
| 2021 | 25 |
| 2022 | 31 |
| 2023 | 31 |
| 2024 | 21 |
| 2025 | 25 |
| 2026 | 4 |
Representative patents
Representative publications under this CPC code from precomputed stats, or recent filings when stats are unavailable.
Flow passage unit and switching valve
US-10006474-B2 · Jun 26, 2018 · US
Hydraulic drive with rapid stroke and load stroke
US-2018142710-A1 · May 24, 2018 · US
Reversible Flow Path Construction
US-2018058043-A1 · Mar 1, 2018 · US
Servo valve spool
US-2018051817-A1 · Feb 22, 2018 · US
Horizontal stabilizer trim actuator systems and methods
US-2018022440-A1 · Jan 25, 2018 · US
Fluid pressure control apparatus
US-9874232-B2 · Jan 23, 2018 · US
Hydraulic Control Valve with Controlled Flow and Valve Safety Disable
US-2017364102-A1 · Dec 21, 2017 · US
Flow control valve for construction machine
US-2017350097-A1 · Dec 7, 2017 · US
Method for compensating for flow rate of hydraulic pump of construction machine
US-2017321394-A1 · Nov 9, 2017 · US
Hydraulic driving apparatus for working machine
US-9777750-B2 · Oct 3, 2017 · US
Valve device and use of such a valve device
US-9752700-B2 · Sep 5, 2017 · US
Latching solenoid regulator valve
US-9728314-B2 · Aug 8, 2017 · US
Change-over valve
US-9719609-B2 · Aug 1, 2017 · US
Oil exchange in hydraulically operated and electro-hydraulically operated hydraulic valves
US-2017198727-A1 · Jul 13, 2017 · US
Apparatus to bias spool valves using supply pressure
US-2017184208-A1 · Jun 29, 2017 · US
Actuator system
US-9657756-B2 · May 23, 2017 · US
Boom cylinder control circuit for construction machine
US-9651064-B2 · May 16, 2017 · US
Shovel and method of controlling shovel
US-2017107697-A1 · Apr 20, 2017 · US
Apparatus to bias spool valves using supply pressure
US-9625043-B2 · Apr 18, 2017 · US
Frequently asked questions
Answers are generated from the same data shown on this page.
- What is CPC F15B13/042?
- CPC F15B13/042 is the Cooperative Patent Classification code for “operated by fluid pressure {(F15B13/0401, F15B13/0416 take precedence)}.”
- How many patents are filed under CPC F15B13/042 (operated by fluid pressure {(F15B13/0401, F15B13/0416 take precedence)})?
- Our database includes 269 publications tagged with this CPC code.
- Is patent activity under CPC F15B13/042 growing?
- Publication counts under this code: 21 in 2024 vs 25 in 2025 (latest complete years).