- 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: 366
10-year publication summary
|
48
|
40
|
56
|
57
|
47
|
34
|
30
|
25
|
20
|
9
|
| 2017 | 2018 | 2019 | 2020 | 2021 | 2022 | 2023 | 2024 | 2025 | 2026 |
Principal owners for this class
| Owner |
All patents
|
This class
|
|---|---|---|
| Textron Innovations Inc. | 2444 |
54 |
| Bell Helicopter Textron Inc. | 961 |
20 |
| Joby Aero, Inc. | 372 |
18 |
| The Boeing Company | 20160 |
13 |
| Amazon Technologies, Inc. | 28087 |
13 |
| Sikorsky Aircraft Corporation | 1067 |
13 |
| Wisk Aero LLC | 280 |
8 |
| Kitty Hawk Corporation | 303 |
6 |
| Korea Aerospace Research Institute | 326 |
6 |
| Amsl Innovations Pty Ltd | 15 |
6 |
| Lockheed Martin Corporation | 3255 |
5 |
| Supernal LLC, AKA Supernal | 137 |
5 |
| Aurora Flight Sciences Corporation | 246 |
4 |
| Leonardo S.p.A. | 699 |
4 |
| Zhejiang Geely Holding Group Co., Ltd. | 2027 |
4 |
| Autel Robotics Co. Ltd. | 1071 |
4 |
| Skyworks Global Inc | 42 |
4 |
| Unmanned Aerospace LLC | 11 |
4 |
| Airbus Helicopters | 951 |
3 |
| Nexter Systems | 126 |
3 |
| Other owners | 169 |