- All sections
- B - Performing operations; transporting
- B64C - Aeroplanes; helicopters
- B64C 27/80 - Mechanisms for controlling blade adjustment or movement relative to rotor head, e.g. lag-lead movement for differential adjustment of blade pitch between two or more lifting rotors
Patent holdings for IPC class B64C 27/80
Total number of patents in this class: 83
10-year publication summary
|
4
|
3
|
20
|
5
|
2
|
22
|
11
|
4
|
4
|
1
|
| 2015 | 2016 | 2017 | 2018 | 2019 | 2020 | 2021 | 2022 | 2023 | 2024 |
Principal owners for this class
| Owner |
All patents
|
This class
|
|---|---|---|
| Sikorsky Aircraft Corporation | 1150 |
17 |
| Textron Innovations Inc. | 2138 |
8 |
| MagLev Aero Inc. | 13 |
7 |
| Lockheed Martin Corporation | 3406 |
3 |
| Bell Helicopter Textron Inc. | 1122 |
3 |
| Kitty Hawk Corporation | 279 |
3 |
| Bell Textron Rhode Island Inc. | 124 |
3 |
| Amazon Technologies, Inc. | 24422 |
2 |
| Arlton, David J. | 3 |
2 |
| Arlton, Paul E. | 3 |
2 |
| Nexter Systems | 193 |
2 |
| Sagita SA | 2 |
2 |
| Hyper Q Aerospace Holdings Pty Ltd | 4 |
2 |
| Suzhou Taoxun Aviation Technology Co., Ltd. | 2 |
2 |
| Honda Motor Co., Ltd. | 24537 |
1 |
| Toyota Motor Corporation | 28582 |
1 |
| Airbus Helicopters | 984 |
1 |
| Denso Corporation | 23338 |
1 |
| California Institute of Technology | 3884 |
1 |
| Board of Regents, The University of Texas System | 5370 |
1 |
| Other owners | 19 |