Ultra-quiet drone
US-2024002076-A1 · Jan 4, 2024 · US
Empennages, e.g. V-tails (foldable or collapsible UAVs B64U20/50)
Empennages, e.g. V-tails (foldable or collapsible UAVs B64U20/50) · 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 | B64U30/40 |
| Official title | Empennages, e.g. V-tails (foldable or collapsible UAVs B64U20/50) |
| Display label | Empennages, e.g. V-tails (foldable or collapsible UAVs B64U20/50) |
| Total patents | 192 |
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 | 4 |
| 2017 | 6 |
| 2018 | 9 |
| 2019 | 16 |
| 2020 | 21 |
| 2021 | 30 |
| 2022 | 24 |
| 2023 | 39 |
| 2024 | 22 |
| 2025 | 11 |
| 2026 | 6 |
Representative patents
Representative publications under this CPC code from precomputed stats, or recent filings when stats are unavailable.
System and method for gimbal lock avoidance in an aircraft
US-2020400430-A1 · Dec 24, 2020 · US
Unmanned aerial vehicle with monolithic wing and twin-rotor propulsion/lift modules
US-10850835-B2 · Dec 1, 2020 · US
Deep stall aircraft landing
US-10810894-B2 · Oct 20, 2020 · US
Elevon control system
US-2020307763-A1 · Oct 1, 2020 · US
Dual Tiltwing Aircraft having a Quadrilateral Linkage
US-2020307781-A1 · Oct 1, 2020 · US
Unmanned aircraft turn and approach system
US-10768624-B2 · Sep 8, 2020 · US
Method and computer program for controlling tilt angle of main rotor on basis of vertical attitude control signal low-speed flight state, and vertical take-off and landing aircraft
US-2020278701-A1 · Sep 3, 2020 · US
Battery Management System
US-2020274371-A1 · Aug 27, 2020 · US
Programmable Battery Pack
US-2020274203-A1 · Aug 27, 2020 · US
Robust amphibious aircraft
US-2020255137-A1 · Aug 13, 2020 · US
Rudder twist lock method and apparatus
US-2020216163-A1 · Jul 9, 2020 · US
Methods and systems for utilizing dual global positioning system (GPS) antennas in vertical take-off and landing (VTOL) aerial vehicles
US-10705224-B2 · Jul 7, 2020 · US
Elevon control system
US-10696375-B2 · Jun 30, 2020 · US
Robust amphibious aircraft
US-10676187-B2 · Jun 9, 2020 · US
Ruggedized autonomous helicopter platform
US-2020126431-A1 · Apr 23, 2020 · US
Rudder twist lock method and apparatus
US-10618627-B2 · Apr 14, 2020 · US
Dual tiltwing aircraft having a quadrilateral linkage
US-10597152-B2 · Mar 24, 2020 · US
Vertical take-off and landing (vtol) aircraft with cruise rotor positioning control for minimum drag
US-2020079501-A1 · Mar 12, 2020 · US
Elevon control system
US-10583910-B2 · Mar 10, 2020 · US
Frequently asked questions
Answers are generated from the same data shown on this page.
- What is CPC B64U30/40?
- CPC B64U30/40 is the Cooperative Patent Classification code for “Empennages, e.g. V-tails (foldable or collapsible UAVs B64U20/50).”
- How many patents are filed under CPC B64U30/40 (Empennages, e.g. V-tails (foldable or collapsible UAVs B64U20/50))?
- Our database includes 192 publications tagged with this CPC code.
- Is patent activity under CPC B64U30/40 growing?
- Publication counts under this code: 22 in 2024 vs 11 in 2025 (latest complete years).