- All sections
- B - Performing operationstransporting
- B64C - Aeroplaneshelicopters
- B64C 11/28 - Collapsible or foldable blades
Patent holdings for IPC class B64C 11/28
Total number of patents in this class: 272
10-year publication summary
|
22
|
46
|
41
|
31
|
32
|
23
|
24
|
12
|
10
|
0
|
| 2017 | 2018 | 2019 | 2020 | 2021 | 2022 | 2023 | 2024 | 2025 | 2026 |
Principal owners for this class
| Owner |
All patents
|
This class
|
|---|---|---|
| Textron Innovations Inc. | 2375 |
64 |
| Bell Helicopter Textron Inc. | 1016 |
23 |
| Joby Aero, Inc. | 327 |
14 |
| Anduril Industries Inc. | 178 |
9 |
| Hyundai Motor Company | 23019 |
8 |
| Amazon Technologies, Inc. | 27359 |
8 |
| Kia Corporation | 10750 |
7 |
| The Boeing Company | 20073 |
6 |
| Kitty Hawk Corporation | 305 |
6 |
| Safran Helicopter Engines | 789 |
6 |
| SZ DJI Technology Co., Ltd | 6873 |
6 |
| Wing Aviation LLC | 519 |
6 |
| Bell Textron Rhode Island Inc. | 72 |
6 |
| General Electric Company | 13793 |
5 |
| Bell Helicopter Rhode Island, Inc. | 52 |
5 |
| Sikorsky Aircraft Corporation | 1090 |
5 |
| Skydio, Inc. | 448 |
5 |
| Northrop Grumman Systems Corporation | 2929 |
4 |
| Autel Robotics Co. Ltd. | 1031 |
4 |
| Karem Aircraft, Inc. | 39 |
3 |
| Other owners | 72 |