- All sections
- B - Performing operationstransporting
- B64C - Aeroplaneshelicopters
- B64C 27/14 - Direct drive between power plant and rotor hub
Patent holdings for IPC class B64C 27/14
Total number of patents in this class: 313
10-year publication summary
|
66
|
54
|
43
|
46
|
26
|
27
|
14
|
11
|
4
|
8
|
| 2017 | 2018 | 2019 | 2020 | 2021 | 2022 | 2023 | 2024 | 2025 | 2026 |
Principal owners for this class
| Owner |
All patents
|
This class
|
|---|---|---|
| Sikorsky Aircraft Corporation | 1063 |
38 |
| SZ DJI Technology Co., Ltd | 6939 |
30 |
| Textron Innovations Inc. | 2534 |
25 |
| Airbus Helicopters | 952 |
19 |
| Safran Helicopter Engines | 847 |
13 |
| Amazon Technologies, Inc. | 28193 |
11 |
| Bell Helicopter Textron Inc. | 958 |
11 |
| Autel Robotics Co. Ltd. | 1076 |
10 |
| MagLev Aero Inc. | 21 |
9 |
| Leonardo S.p.A. | 698 |
8 |
| Lockheed Martin Corporation | 3255 |
7 |
| Aergility Corporation | 7 |
6 |
| Dronexus Aero LLC | 12 |
6 |
| Honeywell International Inc. | 12776 |
5 |
| Airbus Helicopters Deutschland GmbH | 332 |
5 |
| Kawasaki Jukogyo Kabushiki Kaisha (trading as Kawasaki Heavy Industries, Ltd.) | 3272 |
5 |
| HangZhou Zero Zero Technology Co., Ltd. | 85 |
4 |
| EADS Deutschland GmbH | 355 |
3 |
| Goertek Technology Co.,Ltd. | 448 |
3 |
| Honda Motor Co., Ltd. | 26105 |
2 |
| Other owners | 93 |