Ultra-quiet drone
US-2024002076-A1 · Jan 4, 2024 · US
ducted or shrouded
ducted or shrouded · 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 | B64U50/14 |
| Official title | ducted or shrouded |
| Display label | ducted or shrouded |
| Total patents | 354 |
Filing trend
Year-over-year patent counts classified under this CPC code.
Filing activity over the last five years is declining.
| Year | Patents |
|---|---|
| 2015 | 7 |
| 2016 | 12 |
| 2017 | 32 |
| 2018 | 46 |
| 2019 | 41 |
| 2020 | 46 |
| 2021 | 39 |
| 2022 | 43 |
| 2023 | 33 |
| 2024 | 31 |
| 2025 | 22 |
| 2026 | 2 |
Representative patents
Representative publications under this CPC code from precomputed stats, or recent filings when stats are unavailable.
Cooling an unmanned aerial vehicle
US-2018362179-A1 · Dec 20, 2018 · US
Puffer: pop-up flat folding explorer robot
US-10106214-B2 · Oct 23, 2018 · US
Propeller alignment devices
US-10059440-B2 · Aug 28, 2018 · US
Collaborative unmanned aerial vehicle inventory system
US-10007890-B1 · Jun 26, 2018 · US
Contactless magnetic couplings for microfluidic devices and nautical propulsion
US-2018172007-A1 · Jun 21, 2018 · US
Collaborative unmanned aerial vehicle for an inventory system
US-10000284-B1 · Jun 19, 2018 · US
Mechanisms for lowering a payload to the ground from a UAV
US-9957046-B2 · May 1, 2018 · US
Unmanned aerial vehicle protective frame configuration
US-9889930-B2 · Feb 13, 2018 · US
Propeller
US-9849968-B2 · Dec 26, 2017 · US
System and Method for Modular Unmanned Aerial System
US-2017349281-A1 · Dec 7, 2017 · US
Aerial vehicle propeller ducts with active airflow channels
US-9809304-B1 · Nov 7, 2017 · US
Unmanned aerial vehicle
US-2017313441-A1 · Nov 2, 2017 · US
Mechanisms for lowering a payload to the ground from a UAV
US-9783297-B2 · Oct 10, 2017 · US
Dual-aircraft system
US-2017259918-A1 · Sep 14, 2017 · US
Configuration for vertical take-off and landing system for aerial vehicles
US-2017240275-A1 · Aug 24, 2017 · US
System, a method and a computer program product for maneuvering of an air vehicle with tiltable propulsion unit
US-9731818-B2 · Aug 15, 2017 · US
Aerial vehicle delivery shroud
US-9731839-B1 · Aug 15, 2017 · US
Propulsion system assembly
US-2017217600-A1 · Aug 3, 2017 · US
Methods and systems for assessing an emergency situation
US-2017217588-A1 · Aug 3, 2017 · US
Frequently asked questions
Answers are generated from the same data shown on this page.
- What is CPC B64U50/14?
- CPC B64U50/14 is the Cooperative Patent Classification code for “ducted or shrouded.”
- How many patents are filed under CPC B64U50/14 (ducted or shrouded)?
- Our database includes 354 publications tagged with this CPC code.
- Is patent activity under CPC B64U50/14 growing?
- Publication counts under this code: 31 in 2024 vs 22 in 2025 (latest complete years).