Systems, methods, and mechanical designs for inverters for evtol aircraft
US-2024253796-A1 · Aug 1, 2024 · US
with forward-propulsion propellers pivotable to act as lifting rotors
with forward-propulsion propellers pivotable to act as lifting rotors · 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 | B64C27/28 |
| Official title | with forward-propulsion propellers pivotable to act as lifting rotors |
| Display label | with forward-propulsion propellers pivotable to act as lifting rotors |
| Total patents | 427 |
Filing trend
Year-over-year patent counts classified under this CPC code.
Filing activity over the last five years is stable.
| Year | Patents |
|---|---|
| 2015 | 13 |
| 2016 | 7 |
| 2017 | 11 |
| 2018 | 33 |
| 2019 | 49 |
| 2020 | 62 |
| 2021 | 53 |
| 2022 | 50 |
| 2023 | 44 |
| 2024 | 51 |
| 2025 | 47 |
| 2026 | 7 |
Representative patents
Representative publications under this CPC code from precomputed stats, or recent filings when stats are unavailable.
Retractable and deployable flight rotor system
US-2018362154-A1 · Dec 20, 2018 · US
Aerial vehicle
US-2018354613-A1 · Dec 13, 2018 · US
X-Tiltwing Aircraft
US-2018354615-A1 · Dec 13, 2018 · US
Fixed wing aircraft with trailing rotors
US-10144503-B1 · Dec 4, 2018 · US
Rotary pylon conversion actuator for tiltrotor aircraft
US-10106255-B2 · Oct 23, 2018 · US
Tilting ducted fan aircraft generating a pitch control moment
US-10106253-B2 · Oct 23, 2018 · US
Helicopter with Wing Augmented Lift
US-2018281936-A1 · Oct 4, 2018 · US
Tiltrotor Aircraft having Rotatable Wing Extensions
US-2018273169-A1 · Sep 27, 2018 · US
Multirotor aircraft with an airframe and a thrust producing units arrangement
US-2018265189-A1 · Sep 20, 2018 · US
Hybrid propulsion drive train system for tiltrotor aircraft
US-2018251226-A1 · Sep 6, 2018 · US
Tip rib mounted pylon assemblies
US-10065743-B2 · Sep 4, 2018 · US
Tiltrotor Aircraft having Vertical Lift and Hover Augmentation
US-2018237136-A1 · Aug 23, 2018 · US
Aircraft capable of vertical takeoff
US-10029785-B2 · Jul 24, 2018 · US
Tiltrotor aircraft having rotatable wing extensions
US-10011349-B2 · Jul 3, 2018 · US
Gearbox casing, a gearbox, and an aircraft
US-2018178909-A1 · Jun 28, 2018 · US
System and method of rotating rotor blades from a distance
US-9989098-B2 · Jun 5, 2018 · US
Cross-wing driveshaft channel
US-9981734-B2 · May 29, 2018 · US
Proprotor Systems for Tiltrotor Aircraft
US-2018141654-A1 · May 24, 2018 · US
Tiltwing multicopter with foldable and non-foldable propellers
US-9975631-B1 · May 22, 2018 · US
Frequently asked questions
Answers are generated from the same data shown on this page.
- What is CPC B64C27/28?
- CPC B64C27/28 is the Cooperative Patent Classification code for “with forward-propulsion propellers pivotable to act as lifting rotors.”
- How many patents are filed under CPC B64C27/28 (with forward-propulsion propellers pivotable to act as lifting rotors)?
- Our database includes 427 publications tagged with this CPC code.
- Is patent activity under CPC B64C27/28 growing?
- Publication counts under this code: 51 in 2024 vs 47 in 2025 (latest complete years).