- All sections
- B - Performing operationstransporting
- B64C - Aeroplaneshelicopters
- B64C 27/48 - Root attachment to rotor head
Patent holdings for IPC class B64C 27/48
Total number of patents in this class: 245
10-year publication summary
|
54
|
20
|
35
|
16
|
11
|
9
|
11
|
10
|
7
|
4
|
| 2017 | 2018 | 2019 | 2020 | 2021 | 2022 | 2023 | 2024 | 2025 | 2026 |
Principal owners for this class
| Owner |
All patents
|
This class
|
|---|---|---|
| Sikorsky Aircraft Corporation | 1071 |
41 |
| Textron Innovations Inc. | 2407 |
38 |
| Bell Helicopter Textron Inc. | 967 |
22 |
| Lockheed Martin Corporation | 3272 |
17 |
| Hood Technology Corporation | 54 |
15 |
| Airbus Helicopters | 936 |
13 |
| Airbus Helicopters Deutschland GmbH | 326 |
11 |
| The Boeing Company | 20131 |
10 |
| Bell Textron Rhode Island Inc. | 69 |
7 |
| Bell Helicopter Rhode Island, Inc. | 48 |
6 |
| Kitty Hawk Corporation | 304 |
4 |
| FLIR Unmanned Aerial Systems AS | 38 |
4 |
| Supernal LLC, AKA Supernal | 130 |
4 |
| Leonardo S.p.A. | 694 |
3 |
| Skyworks Global Inc | 42 |
3 |
| Kopter Group AG | 37 |
3 |
| United Technologies Corporation | 2220 |
2 |
| AVX Aircraft Company | 15 |
2 |
| SZ DJI Technology Co., Ltd | 6916 |
2 |
| GE Infrastructure Technology, LLC | 6181 |
2 |
| Other owners | 36 |