- All sections
- B - Performing operations; transporting
- B64C - Aeroplanes; helicopters
- B64C 27/473 - Constructional features
Patent holdings for IPC class B64C 27/473
Total number of patents in this class: 415
10-year publication summary
|
31
|
35
|
68
|
46
|
43
|
46
|
40
|
23
|
21
|
15
|
| 2015 | 2016 | 2017 | 2018 | 2019 | 2020 | 2021 | 2022 | 2023 | 2024 |
Principal owners for this class
| Owner |
All patents
|
This class
|
|---|---|---|
| Sikorsky Aircraft Corporation | 1150 |
78 |
| Textron Innovations Inc. | 2138 |
40 |
| Bell Helicopter Textron Inc. | 1122 |
31 |
| Airbus Helicopters | 984 |
21 |
| The Boeing Company | 19843 |
20 |
| Amazon Technologies, Inc. | 24422 |
13 |
| Lockheed Martin Corporation | 3406 |
10 |
| Airbus Helicopters Deutschland GmbH | 324 |
9 |
| MagLev Aero Inc. | 13 |
9 |
| Safran Aircraft Engines | 5739 |
8 |
| SZ DJI Technology Co., Ltd | 6791 |
7 |
| Skyworks Global Inc | 42 |
7 |
| Pratt & Whitney Canada Corp. | 4215 |
6 |
| Northrop Grumman Systems Corporation | 2940 |
6 |
| Leonardo S.p.A. | 605 |
6 |
| Ratier-figeac SAS | 173 |
5 |
| Autel Robotics Co. Ltd. | 965 |
5 |
| LM Wind Power A/S | 233 |
5 |
| 3m Innovative Properties Company | 18406 |
3 |
| AeroVironment, Inc. | 499 |
3 |
| Other owners | 123 |