Aircraft for fixed pitch lift
US-11208206-B1 · Dec 28, 2021 · US
in response to power plant failure
in response to power plant failure · 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 | B64D31/09 |
| Official title | in response to power plant failure |
| Display label | in response to power plant failure |
| Total patents | 145 |
Filing trend
Year-over-year patent counts classified under this CPC code.
Filing activity over the last five years is rapidly growing.
| Year | Patents |
|---|---|
| 2015 | 5 |
| 2016 | 8 |
| 2017 | 8 |
| 2018 | 10 |
| 2019 | 8 |
| 2020 | 15 |
| 2021 | 10 |
| 2022 | 15 |
| 2023 | 13 |
| 2024 | 22 |
| 2025 | 26 |
| 2026 | 5 |
Representative patents
Representative publications under this CPC code from precomputed stats, or recent filings when stats are unavailable.
Method and system for controlling an emergency device
US-11198505-B2 · Dec 14, 2021 · US
Autonomous safety mode for distributed conrtol of turbomachines
US-2021262399-A1 · Aug 26, 2021 · US
Method for controlling a hybrid helicopter in the event of an engine failure
US-2021253262-A1 · Aug 19, 2021 · US
Hybrid electric propulsion system and method of operation
US-11025181-B2 · Jun 1, 2021 · US
Varying quantities of motor poles for noise reduction
US-10988035-B2 · Apr 27, 2021 · US
Bleed-off valve drive controller for aircraft gas turbine engine
US-2020347789-A1 · Nov 5, 2020 · US
Operation of a hybrid electric aircraft propulsion system
US-10826415-B2 · Nov 3, 2020 · US
Short rejected takeoff system and method
US-10815000-B2 · Oct 27, 2020 · US
System for redundant supply of kinetic energy to drive system of aircraft
US-10787271-B2 · Sep 29, 2020 · US
Method for assisting a single-engine rotorcraft during an engine failure
US-2020277072-A1 · Sep 3, 2020 · US
Degraded mode operation of hybrid electric propulsion systems
US-2020277064-A1 · Sep 3, 2020 · US
Motor drive control device for a multicopter
US-10707794-B2 · Jul 7, 2020 · US
Hybrid flight vehicle
US-2020148376-A1 · May 14, 2020 · US
Hybrid electric propulsion system and method of operation
US-2020079518-A1 · Mar 12, 2020 · US
Hybrid electric aircraft propulsion system and method
US-2020079514-A1 · Mar 12, 2020 · US
Hybrid electric aircraft propulsion system
US-2020079515-A1 · Mar 12, 2020 · US
Operation of a hybrid electric aircraft propulsion system
US-2020083823-A1 · Mar 12, 2020 · US
Method for detecting a failure of a first turbine engine of a twin-engine helicopter and for operating the second turbine engine, and corresponding device
US-10578031-B2 · Mar 3, 2020 · US
Varying quantities of motor poles for noise reduction
US-2020047897-A1 · Feb 13, 2020 · US
Frequently asked questions
Answers are generated from the same data shown on this page.
- What is CPC B64D31/09?
- CPC B64D31/09 is the Cooperative Patent Classification code for “in response to power plant failure.”
- How many patents are filed under CPC B64D31/09 (in response to power plant failure)?
- Our database includes 145 publications tagged with this CPC code.
- Is patent activity under CPC B64D31/09 growing?
- Publication counts under this code: 22 in 2024 vs 26 in 2025 (latest complete years).