- All sections
- B - Performing operations; transporting
- B64C - Aeroplanes; helicopters
- B64C 27/32 - Rotors
Patent holdings for IPC class B64C 27/32
Total number of patents in this class: 462
10-year publication summary
|
36
|
43
|
85
|
54
|
50
|
53
|
44
|
43
|
37
|
12
|
| 2015 | 2016 | 2017 | 2018 | 2019 | 2020 | 2021 | 2022 | 2023 | 2024 |
Principal owners for this class
| Owner |
All patents
|
This class
|
|---|---|---|
| Sikorsky Aircraft Corporation | 1150 |
51 |
| Textron Innovations Inc. | 2138 |
45 |
| Bell Helicopter Textron Inc. | 1122 |
39 |
| SZ DJI Technology Co., Ltd | 6791 |
39 |
| Hood Technology Corporation | 53 |
21 |
| Airbus Helicopters | 984 |
18 |
| Autel Robotics Co. Ltd. | 965 |
12 |
| MagLev Aero Inc. | 13 |
11 |
| The Boeing Company | 19843 |
9 |
| Skydio, Inc. | 234 |
9 |
| Lockheed Martin Corporation | 3406 |
8 |
| Wisk Aero LLC | 173 |
8 |
| Amazon Technologies, Inc. | 24422 |
7 |
| Eth Zurich | 1193 |
7 |
| Leonardo S.p.A. | 605 |
5 |
| Skyworks Global Inc | 42 |
5 |
| Honda Motor Co., Ltd. | 24537 |
4 |
| Airbus Helicopters Deutschland GmbH | 324 |
4 |
| Kitty Hawk Corporation | 279 |
4 |
| Ehang Intelligent Equipment (Guangzhou) Co., Ltd. | 100 |
4 |
| Other owners | 152 |