- All sections
- B - Performing operationstransporting
- B64C - Aeroplaneshelicopters
- B64C 27/20 - Rotorcraft characterised by having shrouded rotors, e.g. flying platforms
Patent holdings for IPC class B64C 27/20
Total number of patents in this class: 482
10-year publication summary
|
62
|
57
|
85
|
101
|
74
|
50
|
41
|
33
|
16
|
10
|
| 2017 | 2018 | 2019 | 2020 | 2021 | 2022 | 2023 | 2024 | 2025 | 2026 |
Principal owners for this class
| Owner |
All patents
|
This class
|
|---|---|---|
| Amazon Technologies, Inc. | 28193 |
19 |
| Kitty Hawk Corporation | 304 |
18 |
| Textron Innovations Inc. | 2534 |
16 |
| SZ DJI Technology Co., Ltd | 6939 |
15 |
| MagLev Aero Inc. | 21 |
12 |
| Airbus Helicopters Deutschland GmbH | 332 |
10 |
| FLYON Aerosystems Ltd. | 9 |
8 |
| Mitsubishi Heavy Industries, Ltd. | 9168 |
7 |
| Panasonic Intellectual Property Management Co., Ltd. | 34265 |
6 |
| Eth Zurich | 1327 |
6 |
| The Boeing Company | 20186 |
5 |
| Korea Aerospace Research Institute | 326 |
5 |
| University of Kansas | 924 |
5 |
| Snap Inc. | 6782 |
4 |
| Dr. Ing. h.c. F. Porsche Aktiengesellschaft | 2822 |
4 |
| Airborne Motor Works Inc. | 19 |
4 |
| Dronexus Aero LLC | 12 |
4 |
| Disney Enterprises, Inc. | 6192 |
3 |
| Qualcomm Incorporated | 92859 |
3 |
| Honda Motor Co., Ltd. | 26105 |
3 |
| Other owners | 325 |