- All sections
- B - Performing operations; transporting
- B64C - Aeroplanes; helicopters
- B64C 27/46 - Blades
Patent holdings for IPC class B64C 27/46
Total number of patents in this class: 255
10-year publication summary
|
16
|
26
|
29
|
21
|
25
|
18
|
18
|
15
|
8
|
5
|
| 2015 | 2016 | 2017 | 2018 | 2019 | 2020 | 2021 | 2022 | 2023 | 2024 |
Principal owners for this class
| Owner |
All patents
|
This class
|
|---|---|---|
| Sikorsky Aircraft Corporation | 1150 |
50 |
| Textron Innovations Inc. | 2138 |
19 |
| Bell Helicopter Textron Inc. | 1122 |
15 |
| Pratt & Whitney Canada Corp. | 4215 |
13 |
| The Boeing Company | 19843 |
12 |
| Airbus Helicopters | 984 |
11 |
| Amazon Technologies, Inc. | 24422 |
11 |
| GE Infrastructure Technology, LLC | 5873 |
9 |
| Leonardo S.p.A. | 605 |
6 |
| Lockheed Martin Corporation | 3406 |
5 |
| Wing Aviation LLC | 390 |
5 |
| SZ DJI Technology Co., Ltd | 6791 |
4 |
| Vestas Wind Systems A/S | 3459 |
4 |
| Rtx Corporation | 8674 |
4 |
| Safran Aircraft Engines | 5739 |
3 |
| Leonardo UK Ltd | 104 |
3 |
| General Electric Company | 18133 |
2 |
| United Technologies Corporation | 2328 |
2 |
| Northrop Grumman Systems Corporation | 2940 |
2 |
| Rolls-Royce PLC | 2944 |
2 |
| Other owners | 73 |