- All sections
- B - Performing operationstransporting
- B64C - Aeroplaneshelicopters
- B64C 11/38 - Blade pitch-changing mechanisms fluid, e.g. hydraulic
Patent holdings for IPC class B64C 11/38
Total number of patents in this class: 259
10-year publication summary
|
17
|
16
|
15
|
26
|
13
|
22
|
21
|
29
|
23
|
10
|
| 2017 | 2018 | 2019 | 2020 | 2021 | 2022 | 2023 | 2024 | 2025 | 2026 |
Principal owners for this class
| Owner |
All patents
|
This class
|
|---|---|---|
| Safran Aircraft Engines | 6727 |
99 |
| Pratt & Whitney Canada Corp. | 5517 |
37 |
| GE Avio S.r.l. | 336 |
15 |
| Hamilton Sundstrand Corporation | 5014 |
13 |
| Ratier-figeac SAS | 205 |
9 |
| Safran Helicopter Engines | 847 |
9 |
| General Electric Company | 13915 |
8 |
| GE Aviation Systems Limited | 280 |
8 |
| Snecma | 1058 |
7 |
| Rolls-Royce PLC | 3224 |
6 |
| Safran Landing Systems | 777 |
5 |
| SNECMA S.A. | 1145 |
4 |
| Honeywell International Inc. | 12776 |
4 |
| Textron Innovations Inc. | 2534 |
4 |
| Woodward, Inc. | 677 |
4 |
| GE Aviation Czech s.r.o. | 15 |
3 |
| The Boeing Company | 20186 |
2 |
| Lockheed Martin Corporation | 3255 |
2 |
| Sikorsky Aircraft Corporation | 1063 |
2 |
| Kawasaki Jukogyo Kabushiki Kaisha (trading as Kawasaki Heavy Industries, Ltd.) | 3272 |
2 |
| Other owners | 16 |