- All sections
- B - Performing operations; transporting
- B64C - Aeroplanes; helicopters
- B64C 27/12 - Rotor drives
Patent holdings for IPC class B64C 27/12
Total number of patents in this class: 645
10-year publication summary
|
59
|
76
|
106
|
76
|
70
|
45
|
54
|
39
|
34
|
1
|
| 2016 | 2017 | 2018 | 2019 | 2020 | 2021 | 2022 | 2023 | 2024 | 2025 |
Principal owners for this class
| Owner |
All patents
|
This class
|
|---|---|---|
| Textron Innovations Inc. | 2192 |
96 |
| Airbus Helicopters | 962 |
66 |
| Sikorsky Aircraft Corporation | 1126 |
64 |
| Bell Helicopter Textron Inc. | 1085 |
63 |
| Pratt & Whitney Canada Corp. | 4438 |
33 |
| Safran Helicopter Engines | 724 |
30 |
| Leonardo S.p.A. | 656 |
25 |
| SZ DJI Technology Co., Ltd | 6809 |
19 |
| Airbus Helicopters Deutschland GmbH | 332 |
12 |
| Samsung Electronics Co., Ltd. | 138729 |
9 |
| LG Innotek Co., Ltd. | 7225 |
9 |
| Lockheed Martin Corporation | 3305 |
8 |
| Kopter Group AG | 34 |
8 |
| Kawasaki Heavy Industries, Limited | 1585 |
7 |
| The Boeing Company | 19909 |
6 |
| General Electric Company | 17783 |
5 |
| Ratier-figeac SAS | 181 |
5 |
| Safran Transmission Systems | 276 |
5 |
| Safran Electrical & Power | 614 |
5 |
| Aergility Corporation | 7 |
5 |
| Other owners | 165 |