- 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: 56
10-year publication summary
|
4
|
4
|
8
|
7
|
10
|
4
|
3
|
5
|
2
|
3
|
| 2016 | 2017 | 2018 | 2019 | 2020 | 2021 | 2022 | 2023 | 2024 | 2025 |
Principal owners for this class
| Owner |
All patents
|
This class
|
|---|---|---|
| Bell Helicopter Textron Inc. | 1050 |
13 |
| Textron Innovations Inc. | 2304 |
12 |
| The Boeing Company | 20048 |
5 |
| Airbus Helicopters | 970 |
2 |
| SZ DJI Technology Co., Ltd | 6847 |
2 |
| Real-Time Robotics Inc. | 6 |
2 |
| Mitsubishi Heavy Industries, Ltd. | 8703 |
1 |
| Lockheed Martin Corporation | 3277 |
1 |
| Board of Regents, The University of Texas System | 5782 |
1 |
| Airbus Helicopters Deutschland GmbH | 329 |
1 |
| Aurora Flight Sciences Corporation | 240 |
1 |
| K4a S.r.l. | 4 |
1 |
| Korea Aerospace Research Institute | 317 |
1 |
| Lord Corporation | 470 |
1 |
| Nanyang Technological University | 1999 |
1 |
| PRODRONE Co., Ltd. | 78 |
1 |
| Sikorsky Aircraft Corporation | 1105 |
1 |
| Autel Robotics Co. Ltd. | 1017 |
1 |
| Yuneec International (China) Co. Ltd. | 9 |
1 |
| Joby Aero, Inc. | 302 |
1 |
| Other owners | 6 |