Systems, methods, and mechanical designs for inverters for evtol aircraft
US-2024253796-A1 · Aug 1, 2024 · US
for electric power plants
for 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 | B64D35/021 |
| Official title | for electric power plants |
| Display label | for electric power plants |
| Total patents | 326 |
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 | 4 |
| 2016 | 4 |
| 2017 | 4 |
| 2018 | 7 |
| 2019 | 13 |
| 2020 | 13 |
| 2021 | 19 |
| 2022 | 32 |
| 2023 | 53 |
| 2024 | 81 |
| 2025 | 80 |
| 2026 | 16 |
Representative patents
Representative publications under this CPC code from precomputed stats, or recent filings when stats are unavailable.
Segmented input shaft for electric motor stack and gearbox unit
US-2021403174-A1 · Dec 30, 2021 · US
Electric motor stack with integral one-piece gearbox input shaft
US-2021399607-A1 · Dec 23, 2021 · US
Method and system for distributed electrical loads connected to shared power sources
US-11198515-B2 · Dec 14, 2021 · US
Gearbox with coaxial input and output shafts
US-2021371120-A1 · Dec 2, 2021 · US
Drone motor and drone comprising same
US-11180247-B2 · Nov 23, 2021 · US
Tilting duct compound helicopter
US-11148799-B2 · Oct 19, 2021 · US
Electric drive system line replaceable unit with integrated collective actuation
US-2021276706-A1 · Sep 9, 2021 · US
Electric drive system line replaceable unit with integrated cyclic actuation
US-2021276707-A1 · Sep 9, 2021 · US
Aircraft propulsion system
US-2021214094-A1 · Jul 15, 2021 · US
Aircraft turbine with counter-rotating propellers
US-11056955-B2 · Jul 6, 2021 · US
Varying quantities of motor poles for noise reduction
US-10988035-B2 · Apr 27, 2021 · US
Autonomous propeller propulsion system for an aircraft, said autonomous propeller propulsion system comprising a fuel cell
US-2021078719-A1 · Mar 18, 2021 · US
Flexible battery system for a vehicle
US-2021061110-A1 · Mar 4, 2021 · US
Redundant propulsion device and electric aircraft
US-2021039796-A1 · Feb 11, 2021 · US
Thrust producing unit with a fail-safe electrical drive unit
US-2020407052-A1 · Dec 31, 2020 · US
Dual motor input with overrunning clutch
US-2020361622-A1 · Nov 19, 2020 · US
Battery Switch with Current Control
US-2020274368-A1 · Aug 27, 2020 · US
Air-cooled electric motor with an enclosed housing
US-2020244139-A1 · Jul 30, 2020 · US
Flexible battery system for a vehicle
US-10723235-B1 · Jul 28, 2020 · US
Frequently asked questions
Answers are generated from the same data shown on this page.
- What is CPC B64D35/021?
- CPC B64D35/021 is the Cooperative Patent Classification code for “for electric power plants.”
- How many patents are filed under CPC B64D35/021 (for electric power plants)?
- Our database includes 326 publications tagged with this CPC code.
- Is patent activity under CPC B64D35/021 growing?
- Publication counts under this code: 81 in 2024 vs 80 in 2025 (latest complete years).