- All sections
- B - Performing operationstransporting
- B64C - Aeroplaneshelicopters
- B64C 27/10 - Helicopters with two or more rotors arranged coaxially
Patent holdings for IPC class B64C 27/10
Total number of patents in this class: 366
10-year publication summary
|
50
|
89
|
45
|
40
|
54
|
33
|
25
|
33
|
18
|
9
|
| 2016 | 2017 | 2018 | 2019 | 2020 | 2021 | 2022 | 2023 | 2024 | 2025 |
Principal owners for this class
| Owner |
All patents
|
This class
|
|---|---|---|
| Sikorsky Aircraft Corporation | 1106 |
113 |
| Lockheed Martin Corporation | 3278 |
32 |
| Textron Innovations Inc. | 2295 |
14 |
| MagLev Aero Inc. | 18 |
13 |
| Amazon Technologies, Inc. | 26519 |
6 |
| Advanced Aerodynamics, LLC | 8 |
6 |
| Bell Helicopter Textron Inc. | 1052 |
6 |
| Aergility Corporation | 7 |
6 |
| Dronexus Aero LLC | 10 |
6 |
| ST Engineering Aerospace Ltd. | 38 |
5 |
| Spin Master Ltd. | 1551 |
4 |
| N.M.B. Medical Applications Ltd. | 14 |
4 |
| Shenzhen United Aircraft Technology Co., Ltd. | 4 |
4 |
| SZ DJI Technology Co., Ltd | 6840 |
4 |
| Goertek Technology Co.,Ltd. | 405 |
4 |
| Hyper Q Aerospace Holdings Pty Ltd | 4 |
4 |
| Eagle Technologies, LLC | 5 |
4 |
| The Boeing Company | 20025 |
3 |
| Ascent AeroSystems Inc. | 9 |
3 |
| Guangzhou Ehang Intelligent Technology Co., Ltd. | 52 |
3 |
| Other owners | 122 |