- All sections
- B - Performing operations; transporting
- B64C - Aeroplanes; helicopters
- B64C 27/08 - Helicopters with two or more rotors
Patent holdings for IPC class B64C 27/08
Total number of patents in this class: 1607
10-year publication summary
|
59
|
164
|
290
|
297
|
279
|
223
|
194
|
174
|
122
|
31
|
| 2015 | 2016 | 2017 | 2018 | 2019 | 2020 | 2021 | 2022 | 2023 | 2024 |
Principal owners for this class
| Owner |
All patents
|
This class
|
|---|---|---|
| SZ DJI Technology Co., Ltd | 6791 |
192 |
| Nileworks Inc. | 139 |
50 |
| Kitty Hawk Corporation | 279 |
48 |
| PRODRONE Co., Ltd. | 87 |
47 |
| Amazon Technologies, Inc. | 24422 |
42 |
| Textron Innovations Inc. | 2138 |
34 |
| Autel Robotics Co. Ltd. | 965 |
33 |
| Aeronext Inc. | 144 |
29 |
| Panasonic Intellectual Property Management Co., Ltd. | 27812 |
25 |
| Sikorsky Aircraft Corporation | 1150 |
24 |
| Hood Technology Corporation | 53 |
22 |
| Honda Motor Co., Ltd. | 24537 |
20 |
| Denso Corporation | 23338 |
15 |
| HangZhou Zero Zero Technology Co., Ltd. | 76 |
14 |
| Samsung Electronics Co., Ltd. | 131630 |
13 |
| Sony Corporation | 32931 |
13 |
| Ishikawa Energy Research Co., Ltd. | 28 |
13 |
| The Boeing Company | 19843 |
10 |
| Korea Aerospace Research Institute | 293 |
10 |
| Guangzhou Xaircraft Technology Co., Ltd. | 159 |
10 |
| Other owners | 943 |