- 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: 238
10-year publication summary
|
20
|
21
|
30
|
36
|
29
|
22
|
13
|
12
|
11
|
11
|
| 2016 | 2017 | 2018 | 2019 | 2020 | 2021 | 2022 | 2023 | 2024 | 2025 |
Principal owners for this class
| Owner |
All patents
|
This class
|
|---|---|---|
| Textron Innovations Inc. | 2351 |
42 |
| Bell Helicopter Textron Inc. | 1059 |
17 |
| Sikorsky Aircraft Corporation | 1097 |
14 |
| Autel Robotics Co. Ltd. | 1023 |
10 |
| Bell Helicopter Rhode Island, Inc. | 52 |
9 |
| SZ DJI Technology Co., Ltd | 6862 |
8 |
| Lockheed Martin Corporation | 3271 |
6 |
| FLYON Aerosystems Ltd. | 8 |
5 |
| Bell Textron Rhode Island Inc. | 77 |
5 |
| Dronexus Aero LLC | 10 |
5 |
| Airbus Helicopters | 972 |
4 |
| Airbus Helicopters Deutschland GmbH | 331 |
4 |
| Ascent AeroSystems Inc. | 10 |
4 |
| Skydio, Inc. | 434 |
4 |
| Toyota Motor Corporation | 33138 |
3 |
| The Boeing Company | 20157 |
3 |
| Hamilton Sundstrand Corporation | 4934 |
3 |
| Spin Master Ltd. | 1540 |
3 |
| Korea Aerospace Research Institute | 316 |
3 |
| Safran Helicopter Engines | 769 |
3 |
| Other owners | 83 |