- All sections
- B - Performing operationstransporting
- B64C - Aeroplaneshelicopters
- B64C 27/52 - Tilting of rotor bodily relative to fuselage
Patent holdings for IPC class B64C 27/52
Total number of patents in this class: 352
10-year publication summary
|
26
|
44
|
36
|
53
|
55
|
43
|
34
|
27
|
23
|
11
|
| 2016 | 2017 | 2018 | 2019 | 2020 | 2021 | 2022 | 2023 | 2024 | 2025 |
Principal owners for this class
| Owner |
All patents
|
This class
|
|---|---|---|
| Textron Innovations Inc. | 2334 |
53 |
| Bell Helicopter Textron Inc. | 1061 |
23 |
| Sikorsky Aircraft Corporation | 1099 |
14 |
| The Boeing Company | 20117 |
13 |
| Amazon Technologies, Inc. | 26891 |
13 |
| Joby Aero, Inc. | 313 |
13 |
| Kitty Hawk Corporation | 301 |
6 |
| Korea Aerospace Research Institute | 316 |
6 |
| Amsl Innovations Pty Ltd | 13 |
6 |
| Wisk Aero LLC | 223 |
5 |
| Lockheed Martin Corporation | 3274 |
4 |
| Aurora Flight Sciences Corporation | 241 |
4 |
| Leonardo S.p.A. | 667 |
4 |
| Zhejiang Geely Holding Group Co., Ltd. | 1617 |
4 |
| Autel Robotics Co. Ltd. | 1021 |
4 |
| Skyworks Global Inc | 42 |
4 |
| Airbus Helicopters | 972 |
3 |
| Deakin University | 128 |
3 |
| Fundacion Tecnalia Research & Innovation | 220 |
3 |
| Nexter Systems | 132 |
3 |
| Other owners | 164 |