Aircraft hub fairing with movable members
US-2018334240-A1 · Nov 22, 2018 · US
Blades foldable to facilitate stowage of aircraft
Blades foldable to facilitate stowage of aircraft · 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 | B64C27/50 |
| Official title | Blades foldable to facilitate stowage of aircraft |
| Display label | Blades foldable to facilitate stowage of aircraft |
| Total patents | 295 |
Filing trend
Year-over-year patent counts classified under this CPC code.
Filing activity over the last five years is declining.
| Year | Patents |
|---|---|
| 2015 | 5 |
| 2016 | 10 |
| 2017 | 16 |
| 2018 | 30 |
| 2019 | 39 |
| 2020 | 58 |
| 2021 | 30 |
| 2022 | 30 |
| 2023 | 30 |
| 2024 | 22 |
| 2025 | 21 |
| 2026 | 4 |
Representative patents
Representative publications under this CPC code from precomputed stats, or recent filings when stats are unavailable.
Collapsible flying device
US-10106252-B1 · Oct 23, 2018 · US
Tail sitter vehicle with aerial and ground refueling system
US-10106274-B2 · Oct 23, 2018 · US
Vertically Oriented Tube-Launchable Rotary Wing Aircraft Having Respective Rotors at Opposite Ends of Main Body
US-2018281939-A1 · Oct 4, 2018 · US
Self-folding propeller
US-2018257769-A1 · Sep 13, 2018 · US
Storage modes for tiltrotor aircraft
US-10065736-B2 · Sep 4, 2018 · US
Distributed propulsion system for vertical take off and landing closed wing aircraft
US-2018244376-A1 · Aug 30, 2018 · US
Modular fuselage sections for vertical take off and landing distributed airframe aircraft
US-2018244364-A1 · Aug 30, 2018 · US
Vertical take off and landing closed wing aircraft
US-2018244381-A1 · Aug 30, 2018 · US
Foldable rotor blade assembly
US-2018229830-A1 · Aug 16, 2018 · US
Variable in-flight wing fold system
US-2018222577-A1 · Aug 9, 2018 · US
Distributed propulsion system
US-2018215462-A1 · Aug 2, 2018 · US
Rotorcraft flapping lock
US-10029783-B2 · Jul 24, 2018 · US
Forward folding rotor blades
US-2018186445-A1 · Jul 5, 2018 · US
Unfolding propellor unit type unmanned aerial vehicle
US-2018178896-A1 · Jun 28, 2018 · US
System and method of rotating rotor blades from a distance
US-9989098-B2 · Jun 5, 2018 · US
Self-contained aerial cargo vehicle
US-2018148168-A1 · May 31, 2018 · US
Drone
US-9981744-B2 · May 29, 2018 · US
Folding proprotor blade assembly having integral tang assembly
US-9981736-B2 · May 29, 2018 · US
Rotor Sequencing for Dual Rotor Aircraft
US-2018118334-A1 · May 3, 2018 · US
Frequently asked questions
Answers are generated from the same data shown on this page.
- What is CPC B64C27/50?
- CPC B64C27/50 is the Cooperative Patent Classification code for “Blades foldable to facilitate stowage of aircraft.”
- How many patents are filed under CPC B64C27/50 (Blades foldable to facilitate stowage of aircraft)?
- Our database includes 295 publications tagged with this CPC code.
- Is patent activity under CPC B64C27/50 growing?
- Publication counts under this code: 22 in 2024 vs 21 in 2025 (latest complete years).