Propulsion unit with selective coupling means
US-2017321601-A1 · Nov 9, 2017 · US
Hybrid electric aircraft
Hybrid electric 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 | B64D27/33 |
| Official title | Hybrid electric aircraft |
| Display label | Hybrid electric aircraft |
| Total patents | 1,716 |
Filing trend
Year-over-year patent counts classified under this CPC code.
Filing activity over the last five years is growing.
| Year | Patents |
|---|---|
| 2015 | 17 |
| 2016 | 28 |
| 2017 | 38 |
| 2018 | 90 |
| 2019 | 98 |
| 2020 | 189 |
| 2021 | 185 |
| 2022 | 197 |
| 2023 | 270 |
| 2024 | 254 |
| 2025 | 274 |
| 2026 | 76 |
Representative patents
Representative publications under this CPC code from precomputed stats, or recent filings when stats are unavailable.
Aircraft electrical network
US-2017305524-A1 · Oct 26, 2017 · US
Propulsion engine for an aircraft
US-2017297728-A1 · Oct 19, 2017 · US
Hybrid electric aircraft propulsion incorporating a recuperated prime mover
US-2017291712-A1 · Oct 12, 2017 · US
Electric propulsion engine for an aircraft
US-2017291693-A1 · Oct 12, 2017 · US
Hybrid electric aircraft with rankine cycle heat recovery system
US-2017292447-A1 · Oct 12, 2017 · US
Windmill synchronization in an electric propulsion system
US-2017275013-A1 · Sep 28, 2017 · US
Electromagnetic propeller brake
US-2017260872-A1 · Sep 14, 2017 · US
Aeroelastic wing shaping using distributed propulsion
US-9751614-B1 · Sep 5, 2017 · US
Hybrid propulsion system for a multi-engine aircraft
US-2017247114-A1 · Aug 31, 2017 · US
Hybrid electric power drive system for a rotorcraft
US-2017225573-A1 · Aug 10, 2017 · US
Converter with redundant circuit topology
US-2017197730-A1 · Jul 13, 2017 · US
Method for providing predefined drive characteristics in an aircraft, and associated drive device
US-9623978-B2 · Apr 18, 2017 · US
Autorotative enhancement system
US-2017096219-A1 · Apr 6, 2017 · US
Single blade rotor system for use in a vertical takeoff and landing (VTOL) aircraft
US-9598169-B1 · Mar 21, 2017 · US
Method of activating an electric motor in a hybrid power plant of a multi-engined aircraft, and an aircraft
US-2016375994-A1 · Dec 29, 2016 · US
Aircraft vapour trail control system
US-2016376918-A1 · Dec 29, 2016 · US
Autorotative enhancement system
US-9522730-B2 · Dec 20, 2016 · US
Varying quantities of motor poles for noise reduction
US-2016362187-A1 · Dec 15, 2016 · US
Aircraft propulsion system
US-2016355272-A1 · Dec 8, 2016 · US
Frequently asked questions
Answers are generated from the same data shown on this page.
- What is CPC B64D27/33?
- CPC B64D27/33 is the Cooperative Patent Classification code for “Hybrid electric aircraft.”
- How many patents are filed under CPC B64D27/33 (Hybrid electric aircraft)?
- Our database includes 1,716 publications tagged with this CPC code.
- Is patent activity under CPC B64D27/33 growing?
- Publication counts under this code: 254 in 2024 vs 274 in 2025 (latest complete years).