- All sections
- B - Performing operationstransporting
- B64C - Aeroplaneshelicopters
- B64C 27/50 - Blades foldable to facilitate stowage of aircraft
Patent holdings for IPC class B64C 27/50
Total number of patents in this class: 239
10-year publication summary
|
22
|
31
|
37
|
29
|
25
|
13
|
12
|
11
|
12
|
3
|
| 2017 | 2018 | 2019 | 2020 | 2021 | 2022 | 2023 | 2024 | 2025 | 2026 |
Principal owners for this class
| Owner |
All patents
|
This class
|
|---|---|---|
| Textron Innovations Inc. | 2407 |
43 |
| Bell Helicopter Textron Inc. | 967 |
16 |
| Sikorsky Aircraft Corporation | 1071 |
14 |
| Autel Robotics Co. Ltd. | 1059 |
10 |
| Bell Helicopter Rhode Island, Inc. | 48 |
9 |
| SZ DJI Technology Co., Ltd | 6916 |
8 |
| Lockheed Martin Corporation | 3272 |
6 |
| FLYON Aerosystems Ltd. | 9 |
6 |
| Ascent AeroSystems Inc. | 11 |
5 |
| Bell Textron Rhode Island Inc. | 69 |
5 |
| Dronexus Aero LLC | 11 |
5 |
| Airbus Helicopters | 936 |
4 |
| Airbus Helicopters Deutschland GmbH | 326 |
4 |
| Skydio, Inc. | 510 |
4 |
| Toyota Motor Corporation | 34999 |
3 |
| The Boeing Company | 20131 |
3 |
| Spin Master Ltd. | 1532 |
3 |
| Korea Aerospace Research Institute | 323 |
3 |
| Safran Helicopter Engines | 819 |
3 |
| Hyundai Motor Company | 24105 |
2 |
| Other owners | 83 |