Control method of aero wind power generation device
US-12338801-B2 · Jun 24, 2025 · US
adapted to maintain predetermined altitude
adapted to maintain predetermined altitude · 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 | B64B1/44 |
| Official title | adapted to maintain predetermined altitude |
| Display label | adapted to maintain predetermined altitude |
| Total patents | 57 |
Filing trend
Year-over-year patent counts classified under this CPC code.
Filing activity over the last five years is rapidly declining.
| Year | Patents |
|---|---|
| 2015 | 4 |
| 2016 | 5 |
| 2017 | 8 |
| 2018 | 4 |
| 2019 | 6 |
| 2020 | 4 |
| 2021 | 10 |
| 2022 | 9 |
| 2023 | 4 |
| 2024 | 1 |
| 2025 | 2 |
Representative patents
Representative publications under this CPC code from precomputed stats, or recent filings when stats are unavailable.
Solar hot air balloon vent
US-2025066008-A1 · Feb 27, 2025 · US
Air control system and method using air in atmosphere
US-11946663-B2 · Apr 2, 2024 · US
High-place observation device including an extendable rod-shaped body and a detachable rotorcraft
US-11774832-B2 · Oct 3, 2023 · US
Aerial vehicle
US-11738848-B2 · Aug 29, 2023 · US
Control method of aero wind power generation device
US-2023250805-A1 · Aug 10, 2023 · US
High-place observation device including a gas balloon and a detachable rotorcraft
US-2023014788-A1 · Jan 19, 2023 · US
High-place observation device including a gas balloon and a detachable rotorcraft
US-11487189-B2 · Nov 1, 2022 · US
Propulsion and altitude control operation inhibitors in high altitude platforms
US-2022242548-A1 · Aug 4, 2022 · US
Storm Avoidance System for LTA Vehicle
US-2022242549-A1 · Aug 4, 2022 · US
Flight vehicle with drone and lift-producing protrusion
US-11352134-B2 · Jun 7, 2022 · US
Neutrally buoyant vehicle maneuvering system and methods for same
US-2022135199-A1 · May 5, 2022 · US
Aerial vehicle
US-2022073183-A1 · Mar 10, 2022 · US
Mixed lifting gases for high-altitude balloons
US-2022041262-A1 · Feb 10, 2022 · US
Neutrally buoyant vehicle maneuvering system and methods for same
US-11242126-B2 · Feb 8, 2022 · US
Air control system and method using air in atmosphere
US-2022026100-A1 · Jan 27, 2022 · US
Determining likelihood of failure of an aerial vehicle
US-2021341948-A1 · Nov 4, 2021 · US
Environmental detection systems and methods for high altitude platforms
US-2021242931-A1 · Aug 5, 2021 · US
Superpressure balloon thermal control with low-emissivity cap and active air venting
US-2021171180-A1 · Jun 10, 2021 · US
Air-buoyant structures and vehicles
US-11027816-B1 · Jun 8, 2021 · US
Frequently asked questions
Answers are generated from the same data shown on this page.
- What is CPC B64B1/44?
- CPC B64B1/44 is the Cooperative Patent Classification code for “adapted to maintain predetermined altitude.”
- How many patents are filed under CPC B64B1/44 (adapted to maintain predetermined altitude)?
- Our database includes 57 publications tagged with this CPC code.
- Is patent activity under CPC B64B1/44 growing?
- Publication counts under this code: 1 in 2024 vs 2 in 2025 (latest complete years).