Aircraft system and method for vertical takeoff and landing
US-2017369163-A1 · Dec 28, 2017 · US
characterised by elements which contact the ground or similar surface (arrester hooks B64C25/68)
characterised by elements which contact the ground or similar surface (arrester hooks B64C25/68) · 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 | B64C25/32 |
| Official title | characterised by elements which contact the ground or similar surface (arrester hooks B64C25/68) |
| Display label | characterised by elements which contact the ground or similar surface (arrester hooks B64C25/68) |
| Total patents | 255 |
Filing trend
Year-over-year patent counts classified under this CPC code.
Filing activity over the last five years is declining.
| Year | Patents |
|---|---|
| 2015 | 15 |
| 2016 | 28 |
| 2017 | 19 |
| 2018 | 20 |
| 2019 | 31 |
| 2020 | 26 |
| 2021 | 21 |
| 2022 | 36 |
| 2023 | 27 |
| 2024 | 17 |
| 2025 | 13 |
| 2026 | 2 |
Representative patents
Representative publications under this CPC code from precomputed stats, or recent filings when stats are unavailable.
Helicopter
US-2017313433-A1 · Nov 2, 2017 · US
Method and system for determining friction coefficient μ for an aircraft landing event
US-9798838-B2 · Oct 24, 2017 · US
Emergency Landing Stability System for Aircraft
US-2017297682-A1 · Oct 19, 2017 · US
Impact protection apparatus
US-9789969-B2 · Oct 17, 2017 · US
Landing platform for an unmanned aerial vehicle
US-2017217323-A1 · Aug 3, 2017 · US
Aerial vehicle with frame assemblies
US-2017144741-A1 · May 25, 2017 · US
Adjustable landing gear assembly for unmanned aerial vehicles
US-2017137118-A1 · May 18, 2017 · US
Unmanned aerial vehicle and operations thereof
US-2017121016-A1 · May 4, 2017 · US
Aerial vehicle with frame assemblies
US-2017096210-A1 · Apr 6, 2017 · US
Adjustable landing gear assembly for unmanned aerial vehicles
US-9592908-B2 · Mar 14, 2017 · US
Impact protection apparatus
US-2017057645-A1 · Mar 2, 2017 · US
Three-position aircraft tail skid mechanism and method of actuation
US-2017057625-A1 · Mar 2, 2017 · US
Vertical Takeoff and Landing Vehicle with Increased Cruise Efficiency
US-2017057631-A1 · Mar 2, 2017 · US
On-board water spray system for aircraft
US-9566597-B2 · Feb 14, 2017 · US
UAV docking system and method
US-9561871-B2 · Feb 7, 2017 · US
Aircraft grounding system
US-2017021945-A1 · Jan 26, 2017 · US
Aerial vehicle with frame assemblies
US-9493225-B2 · Nov 15, 2016 · US
Impact protection apparatus
US-9493250-B2 · Nov 15, 2016 · US
Apparatus and methods for controlling velocity of aircraft during landing roll-out and/or taxiing
US-2016325826-A1 · Nov 10, 2016 · US
Frequently asked questions
Answers are generated from the same data shown on this page.
- What is CPC B64C25/32?
- CPC B64C25/32 is the Cooperative Patent Classification code for “characterised by elements which contact the ground or similar surface (arrester hooks B64C25/68).”
- How many patents are filed under CPC B64C25/32 (characterised by elements which contact the ground or similar surface (arrester hooks B64C25/68))?
- Our database includes 255 publications tagged with this CPC code.
- Is patent activity under CPC B64C25/32 growing?
- Publication counts under this code: 17 in 2024 vs 13 in 2025 (latest complete years).