- All sections
- B - Performing operationstransporting
- B64C - Aeroplaneshelicopters
- B64C 27/82 - RotorcraftRotors peculiar thereto characterised by the provision of an auxiliary rotor or fluid-jet device for counter-balancing lifting-rotor torque or changing direction of rotorcraft
Patent holdings for IPC class B64C 27/82
Total number of patents in this class: 589
10-year publication summary
|
88
|
76
|
59
|
63
|
68
|
53
|
44
|
23
|
14
|
18
|
| 2017 | 2018 | 2019 | 2020 | 2021 | 2022 | 2023 | 2024 | 2025 | 2026 |
Principal owners for this class
| Owner |
All patents
|
This class
|
|---|---|---|
| Textron Innovations Inc. | 2443 |
96 |
| Sikorsky Aircraft Corporation | 1066 |
84 |
| Airbus Helicopters | 952 |
46 |
| Bell Helicopter Textron Inc. | 961 |
43 |
| Airbus Helicopters Deutschland GmbH | 329 |
39 |
| Leonardo S.p.A. | 698 |
30 |
| Kitty Hawk Corporation | 303 |
16 |
| The Boeing Company | 20163 |
14 |
| Lockheed Martin Corporation | 3255 |
14 |
| Kopter Group AG | 38 |
11 |
| Skyworks Global Inc | 42 |
10 |
| Blr Aerospace, L.L.C. | 18 |
8 |
| Joby Aero, Inc. | 374 |
8 |
| Aergility Corporation | 7 |
6 |
| Unmanned Aerospace LLC | 11 |
6 |
| Pratt & Whitney Canada Corp. | 5506 |
5 |
| Tusas- Turk Havacilik ve Uzay Sanayii Anonim Sirketi | 337 |
4 |
| Kopter Germany GmbH | 9 |
4 |
| Dronexus Aero LLC | 12 |
4 |
| Hyundai Motor Company | 24703 |
3 |
| Other owners | 138 |