Inner casing for steam turbine engine
US-10844748-B2 · Nov 24, 2020 · US
varying effective number of nozzles or guide conduits {, e.g. sequentially operable valves for steam turbines}
varying effective number of nozzles or guide conduits {, e.g. sequentially operable valves for steam turbines} · 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 | F01D17/18 |
| Official title | varying effective number of nozzles or guide conduits {, e.g. sequentially operable valves for steam turbines} |
| Display label | varying effective number of nozzles or guide conduits {, e.g. sequentially operable valves for steam turbines} |
| Total patents | 95 |
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 | 4 |
| 2016 | 11 |
| 2017 | 9 |
| 2018 | 10 |
| 2019 | 18 |
| 2020 | 13 |
| 2021 | 8 |
| 2022 | 8 |
| 2023 | 6 |
| 2024 | 4 |
| 2025 | 3 |
| 2026 | 1 |
Representative patents
Representative publications under this CPC code from precomputed stats, or recent filings when stats are unavailable.
Dual redundant two-stage valve
US-2020271138-A1 · Aug 27, 2020 · US
Internal Combustion Engine for a Motor Vehicle and Motor Vehicle Having Such an Internal Combustion Engine
US-2020240322-A1 · Jul 30, 2020 · US
Compressor for gas turbine engine with variable vaneless gap
US-2020224549-A1 · Jul 16, 2020 · US
Steam valve, and power generation system
US-2020208534-A1 · Jul 2, 2020 · US
Partial admission operation turbine apparatus for improving efficiency of continuous partial admission operation and method for operating turbine apparatus using same
US-2020095885-A1 · Mar 26, 2020 · US
Steam valve and steam turbine system
US-10591084-B2 · Mar 17, 2020 · US
Gas turbine engine architecture with nested concentric combustor
US-2020025070-A1 · Jan 23, 2020 · US
Gas turbine engine variable stator vane
US-10502089-B2 · Dec 10, 2019 · US
On-off valve device and rotary machine
US-10472983-B2 · Nov 12, 2019 · US
Actuating drive for a control valve, in particular steam turbine control valve and method for operating same
US-10473128-B2 · Nov 12, 2019 · US
On-off valve device and rotary machine
US-10450887-B2 · Oct 22, 2019 · US
Actuating drive for a control valve, in particular a steam turbine control valve, and method for operating same
US-10400799-B2 · Sep 3, 2019 · US
Waste heat recovery system and turbine expander for the same
US-2019264606-A1 · Aug 29, 2019 · US
Variable geometry turbine
US-2019264576-A1 · Aug 29, 2019 · US
Valve device for turbine, turbine, and method for producing valve device and turbine
US-2019234230-A1 · Aug 1, 2019 · US
Connection valve for exhaust gas turbochargers with multi-flow turbines
US-2019203608-A1 · Jul 4, 2019 · US
Overload introduction into a steam turbine
US-10301975-B2 · May 28, 2019 · US
Gas turbine engine architecture with nested concentric combustor
US-10267229-B2 · Apr 23, 2019 · US
Engine supercharger
US-10260404-B2 · Apr 16, 2019 · US
Frequently asked questions
Answers are generated from the same data shown on this page.
- What is CPC F01D17/18?
- CPC F01D17/18 is the Cooperative Patent Classification code for “varying effective number of nozzles or guide conduits {, e.g. sequentially operable valves for steam turbines}.”
- How many patents are filed under CPC F01D17/18 (varying effective number of nozzles or guide conduits {, e.g. sequentially operable valves for steam turbines})?
- Our database includes 95 publications tagged with this CPC code.
- Is patent activity under CPC F01D17/18 growing?
- Publication counts under this code: 4 in 2024 vs 3 in 2025 (latest complete years).