- All sections
- B - Performing operationstransporting
- B64C - Aeroplaneshelicopters
- B64C 27/72 - Means acting on blades
Patent holdings for IPC class B64C 27/72
Total number of patents in this class: 215
10-year publication summary
|
14
|
21
|
28
|
20
|
18
|
13
|
10
|
16
|
6
|
6
|
| 2017 | 2018 | 2019 | 2020 | 2021 | 2022 | 2023 | 2024 | 2025 | 2026 |
Principal owners for this class
| Owner |
All patents
|
This class
|
|---|---|---|
| Sikorsky Aircraft Corporation | 1059 |
27 |
| Bell Helicopter Textron Inc. | 956 |
17 |
| Textron Innovations Inc. | 2543 |
17 |
| The Boeing Company | 20212 |
15 |
| Airbus Helicopters Deutschland GmbH | 337 |
10 |
| MagLev Aero Inc. | 23 |
10 |
| Skyworks Global Inc | 42 |
9 |
| Lockheed Martin Corporation | 3254 |
7 |
| Leonardo S.p.A. | 707 |
6 |
| Claverham Ltd. | 31 |
5 |
| Archer Aviation Inc. | 421 |
5 |
| Airbus Helicopters Technik GmbH | 28 |
4 |
| Airbus Helicopters | 954 |
3 |
| Amazon Technologies, Inc. | 28299 |
3 |
| Karem Aircraft, Inc. | 37 |
3 |
| Hyper Q Aerospace Holdings Pty Ltd | 4 |
3 |
| Leonardo UK Ltd | 139 |
3 |
| Denso Corporation | 25799 |
2 |
| ZF Friedrichshafen AG | 7268 |
2 |
| AgustaWestland Limited | 6 |
2 |
| Other owners | 62 |