- All sections
- B - Performing operationstransporting
- B64C - Aeroplaneshelicopters
- B64C 27/37 - Rotors having articulated joints
Patent holdings for IPC class B64C 27/37
Total number of patents in this class: 55
10-year publication summary
|
4
|
4
|
8
|
7
|
10
|
4
|
3
|
5
|
2
|
1
|
| 2016 | 2017 | 2018 | 2019 | 2020 | 2021 | 2022 | 2023 | 2024 | 2025 |
Principal owners for this class
| Owner |
All patents
|
This class
|
|---|---|---|
| Bell Helicopter Textron Inc. | 1082 |
13 |
| Textron Innovations Inc. | 2201 |
12 |
| The Boeing Company | 19922 |
5 |
| Airbus Helicopters | 962 |
2 |
| SZ DJI Technology Co., Ltd | 6816 |
2 |
| Real-Time Robotics Inc. | 6 |
2 |
| Mitsubishi Heavy Industries, Ltd. | 8550 |
1 |
| Lockheed Martin Corporation | 3306 |
1 |
| Board of Regents, The University of Texas System | 5641 |
1 |
| Airbus Helicopters Deutschland GmbH | 333 |
1 |
| Aurora Flight Sciences Corporation | 238 |
1 |
| K4a S.r.l. | 4 |
1 |
| Korea Aerospace Research Institute | 309 |
1 |
| Lord Corporation | 476 |
1 |
| Nanyang Technological University | 1903 |
1 |
| PRODRONE Co., Ltd. | 78 |
1 |
| Sikorsky Aircraft Corporation | 1122 |
1 |
| Autel Robotics Co. Ltd. | 1008 |
1 |
| Yuneec International (China) Co. Ltd. | 9 |
1 |
| SuZhou Lingsu Electronic Technology Co., Ltd | 6 |
1 |
| Other owners | 5 |