Anti-rotation knife edge seals and gas turbine engines including the same
US-2016362994-A1 · Dec 15, 2016 · US
Preventing or minimising internal leakage of working-fluid, e.g. between stages (sealings in general F16J {; sealing arrangements for transition ducts of combustor cans F01D9/023})
Preventing or minimising internal leakage of working-fluid, e.g. between stages (sealings in general F16J {; sealing arrangements for transition ducts of combustor cans F01D9/023}) · 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 | F01D11/00 |
| Official title | Preventing or minimising internal leakage of working-fluid, e.g. between stages (sealings in general F16J {; sealing arrangements for transition ducts of combustor cans F01D9/023}) |
| Display label | Preventing or minimising internal leakage of working-fluid, e.g. between stages (sealings in general F16J {; sealing arrangements for transition ducts of combustor cans F01D9/023}) |
| Total patents | 546 |
Filing trend
Year-over-year patent counts classified under this CPC code.
Filing activity over the last five years is stable.
| Year | Patents |
|---|---|
| 2015 | 46 |
| 2016 | 62 |
| 2017 | 68 |
| 2018 | 72 |
| 2019 | 61 |
| 2020 | 51 |
| 2021 | 33 |
| 2022 | 44 |
| 2023 | 31 |
| 2024 | 36 |
| 2025 | 34 |
| 2026 | 8 |
Representative patents
Representative publications under this CPC code from precomputed stats, or recent filings when stats are unavailable.
Turbine Exhaust Housing
US-2016348524-A1 · Dec 1, 2016 · US
Control shaft seal
US-9488182-B2 · Nov 8, 2016 · US
Composite seals for turbomachinery
US-2016312633-A1 · Oct 27, 2016 · US
Diffuser seal for geared turbofan or turboprop engines
US-9447695-B2 · Sep 20, 2016 · US
Tapered Gas Turbine Segment Seals
US-2016237912-A1 · Aug 18, 2016 · US
Shaft seal device and rotary machine including shaft seal device
US-9404375-B2 · Aug 2, 2016 · US
Sealing assembly
US-2016153300-A1 · Jun 2, 2016 · US
Flow machine
US-2016130962-A1 · May 12, 2016 · US
Brush seal assembly
US-2016047475-A1 · Feb 18, 2016 · US
Fan for a multi-flow turboshaft engine, and turboshaft engine equipped with such a fan
US-2016032734-A1 · Feb 4, 2016 · US
Turbine ring for a turbomachine
US-2016024926-A1 · Jan 28, 2016 · US
Flap seal spring and sealing apparatus
US-9234433-B2 · Jan 12, 2016 · US
Brush seal device
US-9234592-B2 · Jan 12, 2016 · US
Brush seal system for sealing a clearance between components of a turbo engine that are movable in relation to one another
US-2015377049-A1 · Dec 31, 2015 · US
Gas turbine engine with thermoplastic for smoothing aerodynamic surfaces
US-2015369066-A1 · Dec 24, 2015 · US
Brush seal device
US-2015354707-A1 · Dec 10, 2015 · US
Thermally isolated turbine section for a gas turbine engine
US-2015354455-A1 · Dec 10, 2015 · US
Sealing device and gas turbine having the same
US-9206705-B2 · Dec 8, 2015 · US
Brush seal device
US-2015345640-A1 · Dec 3, 2015 · US
Frequently asked questions
Answers are generated from the same data shown on this page.
- What is CPC F01D11/00?
- CPC F01D11/00 is the Cooperative Patent Classification code for “Preventing or minimising internal leakage of working-fluid, e.g. between stages (sealings in general F16J {; sealing arrangements for transition ducts of combustor cans F01D9/023}).”
- How many patents are filed under CPC F01D11/00 (Preventing or minimising internal leakage of working-fluid, e.g. between stages (sealings in general F16J {; sealing arrangements for transition ducts of combustor cans F01D9/023}))?
- Our database includes 546 publications tagged with this CPC code.
- Is patent activity under CPC F01D11/00 growing?
- Publication counts under this code: 36 in 2024 vs 34 in 2025 (latest complete years).