Noise reducing profile for helicopter rotor blade tracking wedges
US-9849976-B2 · Dec 26, 2017 · US
Aerodynamic features
Aerodynamic features · 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 | B64C27/467 |
| Official title | Aerodynamic features |
| Display label | Aerodynamic features |
| Total patents | 223 |
Filing trend
Year-over-year patent counts classified under this CPC code.
Filing activity over the last five years is declining.
| Year | Patents |
|---|---|
| 2015 | 4 |
| 2016 | 8 |
| 2017 | 48 |
| 2018 | 17 |
| 2019 | 23 |
| 2020 | 30 |
| 2021 | 20 |
| 2022 | 22 |
| 2023 | 16 |
| 2024 | 18 |
| 2025 | 15 |
| 2026 | 2 |
Representative patents
Representative publications under this CPC code from precomputed stats, or recent filings when stats are unavailable.
Propeller Blade Beta Twist
US-2017355454-A1 · Dec 14, 2017 · US
Elevator and rudder control of a rotorcraft
US-2017349275-A1 · Dec 7, 2017 · US
Control system for a stopped rotor aircraft
US-2017341741-A1 · Nov 30, 2017 · US
Stopped rotor aircraft
US-2017341740-A1 · Nov 30, 2017 · US
Trim tab retention system, an aircraft employing same and a method of retaining a trim tab within a blade housing
US-2017341743-A1 · Nov 30, 2017 · US
Monolithic blade, a rotorcraft rotor fitted with such a monolithic blade, and an associated rotorcraft
US-2017334555-A1 · Nov 23, 2017 · US
Aircraft and method of orienting an airframe of an aircraft
US-2017308101-A1 · Oct 26, 2017 · US
Noise modes for rotary wing aircraft
US-2017305540-A1 · Oct 26, 2017 · US
Rotorcraft footprint
US-2017305539-A1 · Oct 26, 2017 · US
Turn radius and bank angle for rotary wing aircraft
US-2017305544-A1 · Oct 26, 2017 · US
Rotorcraft systems to reduce pilot workload
US-2017305534-A1 · Oct 26, 2017 · US
Sealed hub and shaft fairing for rotary wing aircraft
US-2017305543-A1 · Oct 26, 2017 · US
Aircraft main rotor drag to airframe drag
US-2017297696-A1 · Oct 19, 2017 · US
Rotor speed management
US-2017297694-A1 · Oct 19, 2017 · US
Hub separation in dual rotor rotary wing aircraft
US-2017297690-A1 · Oct 19, 2017 · US
Rotary wing aircraft
US-2017297692-A1 · Oct 19, 2017 · US
Propeller assembly with at least two propeller blades
US-2017297677-A1 · Oct 19, 2017 · US
Dual rotor, rotary wing aircraft
US-2017291699-A1 · Oct 12, 2017 · US
Collective to elevator mixing of a rotary wing aircraft
US-2017291702-A1 · Oct 12, 2017 · US
Frequently asked questions
Answers are generated from the same data shown on this page.
- What is CPC B64C27/467?
- CPC B64C27/467 is the Cooperative Patent Classification code for “Aerodynamic features.”
- How many patents are filed under CPC B64C27/467 (Aerodynamic features)?
- Our database includes 223 publications tagged with this CPC code.
- Is patent activity under CPC B64C27/467 growing?
- Publication counts under this code: 18 in 2024 vs 15 in 2025 (latest complete years).