- All sections
- B - Performing operationstransporting
- B64C - Aeroplaneshelicopters
- B64C 27/16 - Drive of rotors by means, e.g. propellers, mounted on rotor blades
Patent holdings for IPC class B64C 27/16
Total number of patents in this class: 45
10-year publication summary
|
3
|
18
|
5
|
8
|
12
|
4
|
2
|
4
|
3
|
0
|
| 2016 | 2017 | 2018 | 2019 | 2020 | 2021 | 2022 | 2023 | 2024 | 2025 |
Principal owners for this class
| Owner |
All patents
|
This class
|
|---|---|---|
| Sikorsky Aircraft Corporation | 1114 |
12 |
| Vinati S.r.l. | 15 |
4 |
| Mitsubishi Heavy Industries, Ltd. | 8608 |
3 |
| Bell Helicopter Textron Inc. | 1054 |
2 |
| Kitty Hawk Corporation | 297 |
2 |
| The Boeing Company | 19960 |
1 |
| Airbus Helicopters | 965 |
1 |
| The Aerospace Corporation | 431 |
1 |
| Airbus Helicopters Deutschland GmbH | 327 |
1 |
| DZYNE Technologies, Inc. | 12 |
1 |
| Meteomatics GmbH | 3 |
1 |
| Safran Helicopter Engines | 743 |
1 |
| Societa' per Azioni Curti- Costruzioni Meccaniche | 10 |
1 |
| Textron Innovations Inc. | 2242 |
1 |
| Top Flight Technologies, Inc. | 20 |
1 |
| Advisr Aero LLC | 2 |
1 |
| Coretronic Intelligent Robotics Corporation | 25 |
1 |
| Anemos Technologies | 1 |
1 |
| Shenzhen Longing Innovative Aviation Technology Co., Ltd. | 20 |
1 |
| Tusas- Turk Havacilik ve Uzay Sanayii Anonim Sirketi | 265 |
1 |
| Other owners | 7 |