- All sections
- B - Performing operations; transporting
- B64C - Aeroplanes; helicopters
- B64C 25/52 - Skis or runners
Patent holdings for IPC class B64C 25/52
Total number of patents in this class: 123
10-year publication summary
|
9
|
16
|
26
|
21
|
13
|
14
|
14
|
10
|
10
|
1
|
| 2015 | 2016 | 2017 | 2018 | 2019 | 2020 | 2021 | 2022 | 2023 | 2024 |
Principal owners for this class
| Owner |
All patents
|
This class
|
|---|---|---|
| Bell Helicopter Textron Inc. | 1122 |
11 |
| Textron Innovations Inc. | 2138 |
10 |
| Airbus Helicopters | 984 |
9 |
| SZ DJI Technology Co., Ltd | 6791 |
9 |
| Beta Air, LLC | 539 |
5 |
| The Boeing Company | 19843 |
4 |
| Amazon Technologies, Inc. | 24422 |
4 |
| Airbus Helicopters Deutschland GmbH | 324 |
4 |
| Messier-dowty Limited | 97 |
3 |
| Guangzhou Xaircraft Technology Co., Ltd. | 159 |
3 |
| Qualcomm Incorporated | 76576 |
2 |
| AeroVironment, Inc. | 499 |
2 |
| The United States of America as represented by the Administration of NASA | 74 |
2 |
| Universite Laval | 703 |
2 |
| Volocopter GmbH | 89 |
2 |
| Bell Textron Inc. | 86 |
2 |
| FLIR Unmanned Aerial Systems ULC | 43 |
2 |
| Hill Group Technologies Limited | 15 |
2 |
| Deere & Company | 6845 |
1 |
| Airbus Operations Limited | 1157 |
1 |
| Other owners | 43 |