Flight device
US-2024343423-A1 · Oct 17, 2024 · US
with two or more rotors
with two or more 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 | B64C27/08 |
| Official title | with two or more rotors |
| Display label | with two or more rotors |
| Total patents | 1,036 |
Filing trend
Year-over-year patent counts classified under this CPC code.
Filing activity over the last five years is declining.
| Year | Patents |
|---|---|
| 2015 | 8 |
| 2016 | 48 |
| 2017 | 114 |
| 2018 | 112 |
| 2019 | 124 |
| 2020 | 163 |
| 2021 | 112 |
| 2022 | 97 |
| 2023 | 91 |
| 2024 | 94 |
| 2025 | 65 |
| 2026 | 8 |
Representative patents
Representative publications under this CPC code from precomputed stats, or recent filings when stats are unavailable.
Flight body, landing method, and program
US-2024199203-A1 · Jun 20, 2024 · US
Rotorcraft operational altitude and airspeed
US-2017225775-A1 · Aug 10, 2017 · US
Aerial vehicle with frame assemblies
US-2017144741-A1 · May 25, 2017 · US
Invertible aircraft
US-9511859-B2 · Dec 6, 2016 · US
Vertical take-off aircraft
US-2016347447-A1 · Dec 1, 2016 · US
Aircraft with thrust vectoring tail
US-2016332727-A1 · Nov 17, 2016 · US
Device for folding/unfolding a tail boom of a rotorcraft, an associated rotorcraft, and a corresponding folding/unfolding method
US-2016332719-A1 · Nov 17, 2016 · US
Aerial vehicle with frame assemblies
US-9493225-B2 · Nov 15, 2016 · US
Multirotor type unmanned aerial vehicle available for adjusting direction of thrust
US-2016325829-A1 · Nov 10, 2016 · US
Unmanned aerial vehicle-based systems and methods associated with cell sites and cell towers with robotic arms for performing operations
US-2016309346-A1 · Oct 20, 2016 · US
System and method for operation and management of reconfigurable unmanned aircraft
US-2016304199-A1 · Oct 20, 2016 · US
Adjustable weight distribution for drone
US-9469394-B2 · Oct 18, 2016 · US
Multirotor mobile buoy for persistent surface and underwater exploration
US-9457900-B1 · Oct 4, 2016 · US
Rotorcraft
US-2016280369-A1 · Sep 29, 2016 · US
Reconfigurable unmanned aircraft system
US-2016272310-A1 · Sep 22, 2016 · US
Adjustable Weight Distribution for Drone
US-2016264234-A1 · Sep 15, 2016 · US
Aerial vehicle
US-2016236777-A1 · Aug 18, 2016 · US
Aerial vehicle
US-2016236772-A1 · Aug 18, 2016 · US
Helicopter-mediated system and method for launching and retrieving an aircraft
US-2016236797-A1 · Aug 18, 2016 · US
Frequently asked questions
Answers are generated from the same data shown on this page.
- What is CPC B64C27/08?
- CPC B64C27/08 is the Cooperative Patent Classification code for “with two or more rotors.”
- How many patents are filed under CPC B64C27/08 (with two or more rotors)?
- Our database includes 1,036 publications tagged with this CPC code.
- Is patent activity under CPC B64C27/08 growing?
- Publication counts under this code: 94 in 2024 vs 65 in 2025 (latest complete years).