- All sections
- B - Performing operationstransporting
- B64C - Aeroplaneshelicopters
- B64C 11/30 - Blade pitch-changing mechanisms
Patent holdings for IPC class B64C 11/30
Total number of patents in this class: 483
10-year publication summary
|
27
|
41
|
44
|
46
|
46
|
35
|
35
|
26
|
35
|
27
|
| 2016 | 2017 | 2018 | 2019 | 2020 | 2021 | 2022 | 2023 | 2024 | 2025 |
Principal owners for this class
| Owner |
All patents
|
This class
|
|---|---|---|
| Pratt & Whitney Canada Corp. | 4885 |
99 |
| Safran Aircraft Engines | 6384 |
81 |
| General Electric Company | 13861 |
21 |
| Textron Innovations Inc. | 2362 |
17 |
| Rolls-Royce PLC | 3141 |
15 |
| Snecma | 1064 |
15 |
| Sikorsky Aircraft Corporation | 1095 |
13 |
| SNECMA S.A. | 1148 |
11 |
| The Boeing Company | 20166 |
11 |
| Hamilton Sundstrand Corporation | 4954 |
11 |
| GE Avio S.r.l. | 294 |
9 |
| Ratier-figeac SAS | 202 |
9 |
| Archer Aviation Inc. | 262 |
9 |
| Amazon Technologies, Inc. | 27203 |
8 |
| Bell Helicopter Textron Inc. | 1021 |
8 |
| GE Aviation Systems Limited | 268 |
8 |
| Airbus Helicopters | 942 |
7 |
| GE Infrastructure Technology, LLC | 6190 |
5 |
| Airbus Helicopters Deutschland GmbH | 323 |
4 |
| Aurora Flight Sciences Corporation | 244 |
4 |
| Other owners | 118 |