- 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: 212
10-year publication summary
|
14
|
21
|
27
|
18
|
18
|
13
|
10
|
15
|
8
|
0
|
| 2017 | 2018 | 2019 | 2020 | 2021 | 2022 | 2023 | 2024 | 2025 | 2026 |
Principal owners for this class
| Owner |
All patents
|
This class
|
|---|---|---|
| Sikorsky Aircraft Corporation | 1091 |
27 |
| Bell Helicopter Textron Inc. | 1016 |
18 |
| Textron Innovations Inc. | 2374 |
18 |
| The Boeing Company | 20081 |
16 |
| Airbus Helicopters Deutschland GmbH | 323 |
10 |
| Skyworks Global Inc | 42 |
9 |
| MagLev Aero Inc. | 18 |
8 |
| Lockheed Martin Corporation | 3290 |
6 |
| Leonardo S.p.A. | 678 |
6 |
| Claverham Ltd. | 31 |
5 |
| Airbus Helicopters | 946 |
4 |
| Archer Aviation Inc. | 312 |
4 |
| Airbus Helicopters Technik GmbH | 30 |
4 |
| Amazon Technologies, Inc. | 27338 |
3 |
| Karem Aircraft, Inc. | 39 |
3 |
| Hyper Q Aerospace Holdings Pty Ltd | 4 |
3 |
| Leonardo UK Ltd | 127 |
3 |
| Denso Corporation | 24863 |
2 |
| ZF Friedrichshafen AG | 7184 |
2 |
| AgustaWestland Limited | 6 |
2 |
| Other owners | 59 |