Steam turbine valve abnormality monitoring system, steam turbine valve drive device, steam turbine valve device, and steam turbine plant
US-11933183-B2 · Mar 19, 2024 · US
involving hydraulic means
involving hydraulic means · 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 | F01D21/18 |
| Official title | involving hydraulic means |
| Display label | involving hydraulic means |
| Total patents | 37 |
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 | 2 |
| 2016 | 4 |
| 2017 | 7 |
| 2018 | 8 |
| 2019 | 5 |
| 2020 | 5 |
| 2021 | 2 |
| 2022 | 1 |
| 2023 | 1 |
| 2024 | 2 |
Representative patents
Representative publications under this CPC code from precomputed stats, or recent filings when stats are unavailable.
On-line verifiable trip and throttle valve actuator
US-11867072-B2 · Jan 9, 2024 · US
On-line verifiable trip and throttle valve actuator
US-2023175415-A1 · Jun 8, 2023 · US
Emergency shut-off device
US-11352899-B2 · Jun 7, 2022 · US
Steam turbine valve abnormality monitoring system, steam turbine valve drive device, steam turbine valve device, and steam turbine plant
US-2021388735-A1 · Dec 16, 2021 · US
Dual trip manifold assembly for turbine systems
US-10989064-B2 · Apr 27, 2021 · US
Steam turbine valve drive apparatus
US-10871080-B2 · Dec 22, 2020 · US
Trip manifold assembly for turbine systems
US-10865655-B2 · Dec 15, 2020 · US
Emergency shut-off device
US-2020240284-A1 · Jul 30, 2020 · US
Hydraulic drive for executing a linear movement
US-10578227-B2 · Mar 3, 2020 · US
Trip system for steam turbine
US-10550719-B2 · Feb 4, 2020 · US
Hydraulic control device for an emergency stop valve of a steam turbine and steam turbine arrangement
US-10480346-B2 · Nov 19, 2019 · US
Dual trip manifold assembly for turbine systems
US-2019323376-A1 · Oct 24, 2019 · US
Emergency shutoff device and emergency shutoff system provided with same
US-10443513-B2 · Oct 15, 2019 · US
Dual trip manifold assembly for turbine systems
US-10273824-B2 · Apr 30, 2019 · US
Trip system for steam turbine
US-2019063255-A1 · Feb 28, 2019 · US
High reliability high flow redundant trip block
US-10119478-B2 · Nov 6, 2018 · US
Steam turbine valve drive apparatus
US-2018216485-A1 · Aug 2, 2018 · US
Dual trip manifold assembly for turbine systems
US-10018072-B2 · Jul 10, 2018 · US
Trip manifold assembly for turbine systems
US-2018171822-A1 · Jun 21, 2018 · US
Frequently asked questions
Answers are generated from the same data shown on this page.
- What is CPC F01D21/18?
- CPC F01D21/18 is the Cooperative Patent Classification code for “involving hydraulic means.”
- How many patents are filed under CPC F01D21/18 (involving hydraulic means)?
- Our database includes 37 publications tagged with this CPC code.
- Is patent activity under CPC F01D21/18 growing?
- Publication counts under this code: 1 in 2023 vs 2 in 2024 (latest complete years).