Fluidic propulsive system
US-10501197-B2 · Dec 10, 2019 · US
Influencing air flow over aircraft surfaces by affecting boundary layer flow
Influencing air flow over aircraft surfaces by affecting boundary layer flow · Cooperative Patent Classification (CPC)
Separating, mixing, shaping, printing, and transporting materials.
Related technology areas
Mapped technology topics for this CPC code.
| Metric | Value |
|---|---|
| CPC code | B64C21/00 |
| Official title | Influencing air flow over aircraft surfaces by affecting boundary layer flow |
| Display label | Influencing air flow over aircraft surfaces by affecting boundary layer flow |
| Total patents | 190 |
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 | 5 |
| 2016 | 10 |
| 2017 | 16 |
| 2018 | 16 |
| 2019 | 26 |
| 2020 | 24 |
| 2021 | 33 |
| 2022 | 19 |
| 2023 | 16 |
| 2024 | 12 |
| 2025 | 9 |
| 2026 | 4 |
Representative patents
Representative publications under this CPC code from precomputed stats, or recent filings when stats are unavailable.
Aircraft Having an Aft Engine
US-2019337630-A1 · Nov 7, 2019 · US
Configuration for vertical take-off and landing system for aerial vehicles
US-10464668-B2 · Nov 5, 2019 · US
Wing structure, method of controlling wing structure, and aircraft
US-2019329870-A1 · Oct 31, 2019 · US
Wing structure, method of controlling wing structure, and aircraft
US-2019322358-A1 · Oct 24, 2019 · US
Countermeasure dispenser with variable spoiler and method for launching a countermeasure
US-2019283879-A1 · Sep 19, 2019 · US
Aircraft having an aft engine
US-10370110-B2 · Aug 6, 2019 · US
Low-noise airfoil for an open rotor
US-10358926-B2 · Jul 23, 2019 · US
Seal plate for an aerodynamic surface
US-2019193832-A1 · Jun 27, 2019 · US
Fluidic propulsive system and thrust and lift generator for aerial vehicles
US-2019112062-A1 · Apr 18, 2019 · US
Aircraft
US-10246197-B2 · Apr 2, 2019 · US
Aircraft
US-2019061920-A1 · Feb 28, 2019 · US
Ejector and airfoil configurations
US-2019047712-A1 · Feb 14, 2019 · US
Dedicated fans for boundary layer ingestion
US-2018339765-A1 · Nov 29, 2018 · US
Ejector and airfoil configurations
US-2018312268-A1 · Nov 1, 2018 · US
Stabilizer assembly for an aircraft AFT engine
US-10106265-B2 · Oct 23, 2018 · US
Wing and Propeller Design for Aircraft
US-2018297693-A1 · Oct 18, 2018 · US
Vortex generating apparatus and vortex generating method
US-10086926-B2 · Oct 2, 2018 · US
Virtual aerodynamic surface systems
US-2018257756-A1 · Sep 13, 2018 · US
Propulsor
US-2018237126-A1 · Aug 23, 2018 · US
Frequently asked questions
Answers are generated from the same data shown on this page.
- What is CPC B64C21/00?
- CPC B64C21/00 is the Cooperative Patent Classification code for “Influencing air flow over aircraft surfaces by affecting boundary layer flow.”
- How many patents are filed under CPC B64C21/00 (Influencing air flow over aircraft surfaces by affecting boundary layer flow)?
- Our database includes 190 publications tagged with this CPC code.
- Is patent activity under CPC B64C21/00 growing?
- Publication counts under this code: 12 in 2024 vs 9 in 2025 (latest complete years).