Fuel cell system and aircraft having an inerting system
US-2024379984-A1 · Nov 14, 2024 · US
using fuel cells
using fuel cells · 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 | B64D27/355 |
| Official title | using fuel cells |
| Display label | using fuel cells |
| Total patents | 289 |
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 | 1 |
| 2016 | 5 |
| 2017 | 4 |
| 2018 | 13 |
| 2019 | 1 |
| 2020 | 13 |
| 2021 | 12 |
| 2022 | 34 |
| 2023 | 52 |
| 2024 | 68 |
| 2025 | 66 |
| 2026 | 20 |
Representative patents
Representative publications under this CPC code from precomputed stats, or recent filings when stats are unavailable.
Tank system comprising a chassis, a tank for dihydrogen, and means for attaching the tank to the chassis
US-2022371743-A1 · Nov 24, 2022 · US
Electrical power generation on a vehicle
US-11505328-B2 · Nov 22, 2022 · US
Drive system of an aircraft, aircraft and method for operating an aircraft
US-2022348311-A1 · Nov 3, 2022 · US
Flight vehicle
US-2022344680-A1 · Oct 27, 2022 · US
Flight vehicle
US-2022344681-A1 · Oct 27, 2022 · US
Flight vehicle
US-2022340291-A1 · Oct 27, 2022 · US
Computer-implemented methods for controlling the operation of electric and hybrid electric aircraft
US-2022292987-A1 · Sep 15, 2022 · US
Computer-implemented methods for controlling the operation of electric and hybrid electric aircraft
US-2022291683-A1 · Sep 15, 2022 · US
Electric propulsion system of an aircraft
US-2022177146-A1 · Jun 9, 2022 · US
Fuel cell and fuel cell system for an aircraft
US-2022037685-A1 · Feb 3, 2022 · US
Wing integrated propulsion system
US-2021387715-A1 · Dec 16, 2021 · US
Energy management system for minimum fuel cell load, aircraft having an energy management system and method for ensuring minimum fuel cell load
US-11186380-B2 · Nov 30, 2021 · US
Hydrogen propulsion systems for aircraft
US-2021300575-A1 · Sep 30, 2021 · US
Propulsion apparatus, power supply apparatus, and flying body
US-2021261268-A1 · Aug 26, 2021 · US
Excess thrust control for an aircraft
US-2021254556-A1 · Aug 19, 2021 · US
Aircraft propulsion system
US-2021214094-A1 · Jul 15, 2021 · US
Aircraft propulsion system
US-10974836-B2 · Apr 13, 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
Aircraft having support stays for wings in which hydrogen pipes or electrical conductors are arranged
US-2021078702-A1 · Mar 18, 2021 · US
Frequently asked questions
Answers are generated from the same data shown on this page.
- What is CPC B64D27/355?
- CPC B64D27/355 is the Cooperative Patent Classification code for “using fuel cells.”
- How many patents are filed under CPC B64D27/355 (using fuel cells)?
- Our database includes 289 publications tagged with this CPC code.
- Is patent activity under CPC B64D27/355 growing?
- Publication counts under this code: 68 in 2024 vs 66 in 2025 (latest complete years).