- 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: 578
10-year publication summary
|
50
|
88
|
76
|
59
|
63
|
68
|
53
|
39
|
22
|
1
|
| 2016 | 2017 | 2018 | 2019 | 2020 | 2021 | 2022 | 2023 | 2024 | 2025 |
Principal owners for this class
| Owner |
All patents
|
This class
|
|---|---|---|
| Textron Innovations Inc. | 2201 |
96 |
| Sikorsky Aircraft Corporation | 1122 |
85 |
| Airbus Helicopters | 962 |
51 |
| Bell Helicopter Textron Inc. | 1082 |
44 |
| Airbus Helicopters Deutschland GmbH | 333 |
38 |
| Leonardo S.p.A. | 659 |
27 |
| Kitty Hawk Corporation | 287 |
16 |
| The Boeing Company | 19922 |
15 |
| Lockheed Martin Corporation | 3306 |
12 |
| Skyworks Global Inc | 42 |
10 |
| Kopter Group AG | 34 |
10 |
| Blr Aerospace, L.L.C. | 16 |
6 |
| Joby Aero, Inc. | 267 |
6 |
| Aergility Corporation | 7 |
6 |
| Unmanned Aerospace LLC | 6 |
6 |
| Pratt & Whitney Canada Corp. | 4451 |
3 |
| California Institute of Technology | 3935 |
3 |
| Helicopter Innovations, Inc. | 3 |
3 |
| Microtecnica S.r.l. | 78 |
3 |
| Piasecki Aircraft Corporation | 38 |
3 |
| Other owners | 135 |