- 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: 306
10-year publication summary
|
25
|
66
|
54
|
43
|
46
|
26
|
27
|
15
|
9
|
0
|
| 2016 | 2017 | 2018 | 2019 | 2020 | 2021 | 2022 | 2023 | 2024 | 2025 |
Principal owners for this class
| Owner |
All patents
|
This class
|
|---|---|---|
| Sikorsky Aircraft Corporation | 1123 |
39 |
| SZ DJI Technology Co., Ltd | 6814 |
30 |
| Textron Innovations Inc. | 2195 |
25 |
| Airbus Helicopters | 962 |
19 |
| Safran Helicopter Engines | 728 |
12 |
| Amazon Technologies, Inc. | 25944 |
11 |
| Bell Helicopter Textron Inc. | 1082 |
11 |
| Autel Robotics Co. Ltd. | 1007 |
10 |
| MagLev Aero Inc. | 17 |
8 |
| Lockheed Martin Corporation | 3308 |
7 |
| Leonardo S.p.A. | 656 |
6 |
| Aergility Corporation | 7 |
6 |
| Honeywell International Inc. | 14022 |
5 |
| Airbus Helicopters Deutschland GmbH | 333 |
5 |
| Kawasaki Jukogyo Kabushiki Kaisha (trading as Kawasaki Heavy Industries, Ltd.) | 3020 |
5 |
| Dronexus Aero LLC | 10 |
5 |
| HangZhou Zero Zero Technology Co., Ltd. | 78 |
4 |
| EADS Deutschland GmbH | 375 |
3 |
| Goertek Technology Co.,Ltd. | 380 |
3 |
| Kopter Group AG | 34 |
3 |
| Other owners | 89 |