Propulsion system for an aircraft
US-2018372588-A1 · Dec 27, 2018 · US
for hybrid-electric power plants
for hybrid-electric power plants · 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 | B64D31/18 |
| Official title | for hybrid-electric power plants |
| Display label | for hybrid-electric power plants |
| Total patents | 951 |
Filing trend
Year-over-year patent counts classified under this CPC code.
Filing activity over the last five years is growing.
| Year | Patents |
|---|---|
| 2015 | 9 |
| 2016 | 17 |
| 2017 | 17 |
| 2018 | 51 |
| 2019 | 42 |
| 2020 | 98 |
| 2021 | 86 |
| 2022 | 106 |
| 2023 | 170 |
| 2024 | 153 |
| 2025 | 162 |
| 2026 | 40 |
Representative patents
Representative publications under this CPC code from precomputed stats, or recent filings when stats are unavailable.
Propulsion System for an Aircraft
US-2018304753-A1 · Oct 25, 2018 · US
Method for managing imbalance in a distributed propulsion system
US-2018305033-A1 · Oct 25, 2018 · US
Systems and methods of power allocation for hybrid electric architecture
US-2018291807-A1 · Oct 11, 2018 · US
Gas-Electric Propulsion System for an Aircraft
US-2018257787-A1 · Sep 13, 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
Propulsor assembly for an aircraft
US-2018229851-A1 · Aug 16, 2018 · US
Forward folding rotor blades
US-2018186445-A1 · Jul 5, 2018 · US
Aircraft Electrically-Assisted Propulsion Control System
US-2018178920-A1 · Jun 28, 2018 · US
Gas-electric propulsion system for an aircraft
US-10000293-B2 · Jun 19, 2018 · US
Hybrid-electric drive system
US-2018163558-A1 · Jun 14, 2018 · US
Power source for an aircraft
US-2018134401-A1 · May 17, 2018 · US
System and method for augmenting a primary powerplant
US-2018118364-A1 · May 3, 2018 · US
Method of activating an electric motor in a hybrid power plant of a multi-engined aircraft, and an aircraft
US-9914536-B2 · Mar 13, 2018 · US
Tiltrotor propulsion system for an aircraft
US-2018065743-A1 · Mar 8, 2018 · US
Engine for propelling an aircraft and aircraft having at least one engine and at least one hydrogen tank
US-9897041-B2 · Feb 20, 2018 · US
Distributed propulsion systems
US-2017349293-A1 · Dec 7, 2017 · US
Electrical assist for aircraft
US-2017327238-A1 · Nov 16, 2017 · US
Optionally hybrid power system
US-2017320585-A1 · Nov 9, 2017 · US
Frequently asked questions
Answers are generated from the same data shown on this page.
- What is CPC B64D31/18?
- CPC B64D31/18 is the Cooperative Patent Classification code for “for hybrid-electric power plants.”
- How many patents are filed under CPC B64D31/18 (for hybrid-electric power plants)?
- Our database includes 951 publications tagged with this CPC code.
- Is patent activity under CPC B64D31/18 growing?
- Publication counts under this code: 153 in 2024 vs 162 in 2025 (latest complete years).