- All sections
- B - Performing operationstransporting
- B64C - Aeroplaneshelicopters
- B64C 27/54 - Mechanisms for controlling blade adjustment or movement relative to rotor head, e.g. lag-lead movement
Patent holdings for IPC class B64C 27/54
Total number of patents in this class: 234
10-year publication summary
|
32
|
18
|
13
|
6
|
16
|
13
|
11
|
29
|
19
|
3
|
| 2017 | 2018 | 2019 | 2020 | 2021 | 2022 | 2023 | 2024 | 2025 | 2026 |
Principal owners for this class
| Owner |
All patents
|
This class
|
|---|---|---|
| Archer Aviation Inc. | 372 |
34 |
| Sikorsky Aircraft Corporation | 1071 |
32 |
| Bell Helicopter Textron Inc. | 963 |
29 |
| Textron Innovations Inc. | 2407 |
16 |
| Airbus Helicopters | 945 |
12 |
| The Boeing Company | 20137 |
9 |
| SZ DJI Technology Co., Ltd | 6917 |
8 |
| Leonardo S.p.A. | 694 |
6 |
| AeroVironment, Inc. | 566 |
5 |
| Airbus Helicopters Deutschland GmbH | 327 |
5 |
| Wisk Aero LLC | 263 |
4 |
| Merlin Technology, Inc. | 165 |
3 |
| Joby Aero, Inc. | 357 |
3 |
| Aeronext Inc. | 187 |
3 |
| Beta Air, LLC | 645 |
3 |
| Airbus Helicopters Technik GmbH | 28 |
3 |
| Pratt & Whitney Canada Corp. | 5358 |
2 |
| ZF Friedrichshafen AG | 7223 |
2 |
| Karem Aircraft, Inc. | 40 |
2 |
| Microtecnica S.r.l. | 99 |
2 |
| Other owners | 51 |