Systems and methods for flight control of evtol aircraft
US-2024400200-A1 · Dec 5, 2024 · US
using batteries
using batteries · 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 | B64D27/357 |
| Official title | using batteries |
| Display label | using batteries |
| Total patents | 1,156 |
Filing trend
Year-over-year patent counts classified under this CPC code.
Filing activity over the last five years is growing.
| Year | Patents |
|---|---|
| 2015 | 7 |
| 2016 | 22 |
| 2017 | 18 |
| 2018 | 38 |
| 2019 | 53 |
| 2020 | 73 |
| 2021 | 100 |
| 2022 | 155 |
| 2023 | 252 |
| 2024 | 211 |
| 2025 | 175 |
| 2026 | 52 |
Representative patents
Representative publications under this CPC code from precomputed stats, or recent filings when stats are unavailable.
Battery protection at altitude
US-2024291121-A1 · Aug 29, 2024 · US
Electric power system architecture and fault tolerant vtol aircraft using same
US-2024025543-A1 · Jan 25, 2024 · US
System and method for maintaining a fleet of aircraft batteries located at multiple airports
US-11881568-B2 · Jan 23, 2024 · US
Device and method for cooling at least one autonomous electric power source of an aircraft
US-10150570-B2 · Dec 11, 2018 · US
Electric vehicle hybrid battery system
US-2018339781-A1 · Nov 29, 2018 · US
Propulsion System for an Aircraft
US-2018305036-A1 · Oct 25, 2018 · US
Systems and methods of power allocation for hybrid electric architecture
US-2018291807-A1 · Oct 11, 2018 · US
Integrated cooling and venting system
US-2018287234-A1 · Oct 4, 2018 · US
Propulsion System for an Aircraft
US-2018230844-A1 · Aug 16, 2018 · US
Electrical drive system for an aircraft and operating method
US-10035607-B2 · Jul 31, 2018 · US
Gas-electric propulsion system for an aircraft
US-10000293-B2 · Jun 19, 2018 · US
Electric direct drive for aircraft propulsion and lift
US-9937803-B2 · Apr 10, 2018 · US
Aircraft battery containment pods
US-9845158-B2 · Dec 19, 2017 · US
Systems and methods for lighter-than-air high altitude platforms
US-2017334538-A1 · Nov 23, 2017 · US
Electrical assist for aircraft
US-2017327238-A1 · Nov 16, 2017 · US
Vertical take-off and landing aircraft with hybrid power and method
US-2017327219-A1 · Nov 16, 2017 · US
Hybrid electric aircraft propulsion incorporating a recuperated prime mover
US-2017291712-A1 · Oct 12, 2017 · US
Hybrid electric aircraft with rankine cycle heat recovery system
US-2017292447-A1 · Oct 12, 2017 · US
Electrical drive system for an aircraft and operating method
US-2017253344-A1 · Sep 7, 2017 · US
Frequently asked questions
Answers are generated from the same data shown on this page.
- What is CPC B64D27/357?
- CPC B64D27/357 is the Cooperative Patent Classification code for “using batteries.”
- How many patents are filed under CPC B64D27/357 (using batteries)?
- Our database includes 1,156 publications tagged with this CPC code.
- Is patent activity under CPC B64D27/357 growing?
- Publication counts under this code: 211 in 2024 vs 175 in 2025 (latest complete years).