- 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: 280
10-year publication summary
|
23
|
48
|
41
|
31
|
33
|
23
|
24
|
12
|
14
|
9
|
| 2017 | 2018 | 2019 | 2020 | 2021 | 2022 | 2023 | 2024 | 2025 | 2026 |
Principal owners for this class
| Owner |
All patents
|
This class
|
|---|---|---|
| Textron Innovations Inc. | 2541 |
66 |
| Bell Helicopter Textron Inc. | 956 |
23 |
| Joby Aero, Inc. | 383 |
14 |
| Anduril Industries Inc. | 217 |
12 |
| Hyundai Motor Company | 24951 |
8 |
| Amazon Technologies, Inc. | 28264 |
8 |
| SZ DJI Technology Co., Ltd | 6941 |
7 |
| Kia Corporation | 12683 |
7 |
| The Boeing Company | 20193 |
6 |
| Kitty Hawk Corporation | 304 |
6 |
| Safran Helicopter Engines | 853 |
6 |
| Wing Aviation LLC | 583 |
6 |
| Bell Textron Rhode Island Inc. | 69 |
6 |
| General Electric Company | 13982 |
5 |
| Bell Helicopter Rhode Island, Inc. | 47 |
5 |
| Skydio, Inc. | 534 |
5 |
| Northrop Grumman Systems Corporation | 2913 |
4 |
| Sikorsky Aircraft Corporation | 1060 |
4 |
| Autel Robotics Co. Ltd. | 1085 |
4 |
| Karem Aircraft, Inc. | 37 |
3 |
| Other owners | 75 |