Closed circuit for cooling the engine of an aircraft propulsion plant
US-2020377222-A1 · Dec 3, 2020 · US
within, or attached to, fuselages
within, or attached to, fuselages · 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 | B64D27/32 |
| Official title | within, or attached to, fuselages |
| Display label | within, or attached to, fuselages |
| Total patents | 217 |
Filing trend
Year-over-year patent counts classified under this CPC code.
Filing activity over the last five years is stable.
| Year | Patents |
|---|---|
| 2015 | 1 |
| 2016 | 3 |
| 2017 | 8 |
| 2018 | 25 |
| 2019 | 21 |
| 2020 | 30 |
| 2021 | 21 |
| 2022 | 28 |
| 2023 | 30 |
| 2024 | 25 |
| 2025 | 20 |
| 2026 | 5 |
Representative patents
Representative publications under this CPC code from precomputed stats, or recent filings when stats are unavailable.
Aircraft having hybrid-electric propulsion system with electric storage located in fuselage
US-2020277061-A1 · Sep 3, 2020 · US
Nacelle for an aircraft aft fan
US-10501196-B2 · Dec 10, 2019 · US
Embedded electric machine
US-10487839-B2 · Nov 26, 2019 · US
Hybrid power system for an aircraft
US-10472078-B2 · Nov 12, 2019 · US
Quad-wing vertical takeoff and landing aircraft
US-2019337613-A1 · Nov 7, 2019 · US
Airfoil body including a moveable section of an outer surface carrying an array of transducer elements
US-10468545-B1 · Nov 5, 2019 · US
Vertical take-off and landing (vtol) aircraft with rotor configurations tolerant to rotor failure
US-2019329880-A1 · Oct 31, 2019 · US
Aircraft with tilting cross-flow fan wings
US-10421541-B2 · Sep 24, 2019 · US
Aircraft with electric batteries, in particular a hybrid aircraft
US-2019263498-A1 · Aug 29, 2019 · US
Propulsion engine for an aircraft
US-10392120-B2 · Aug 27, 2019 · US
Aircraft
US-10358229-B2 · Jul 23, 2019 · US
Deployable assembly for a propulsor
US-2019176971-A1 · Jun 13, 2019 · US
Air Management Systems for Stacked Motor Assemblies
US-2019144126-A1 · May 16, 2019 · US
Converter with redundant circuit topology
US-10287030-B2 · May 14, 2019 · US
Integrated heat management for hybrid propulsion
US-2019118957-A1 · Apr 25, 2019 · US
Deployable assembly for a propulsor
US-10252791-B2 · Apr 9, 2019 · US
Hybrid power systems for aircraft
US-2019100322-A1 · Apr 4, 2019 · US
Electrical interconnect system
US-2019097429-A1 · Mar 28, 2019 · US
Hybrid power system for an aircraft
US-10227137-B2 · Mar 12, 2019 · US
Frequently asked questions
Answers are generated from the same data shown on this page.
- What is CPC B64D27/32?
- CPC B64D27/32 is the Cooperative Patent Classification code for “within, or attached to, fuselages.”
- How many patents are filed under CPC B64D27/32 (within, or attached to, fuselages)?
- Our database includes 217 publications tagged with this CPC code.
- Is patent activity under CPC B64D27/32 growing?
- Publication counts under this code: 25 in 2024 vs 20 in 2025 (latest complete years).