- 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: 231
10-year publication summary
|
8
|
13
|
12
|
15
|
20
|
10
|
19
|
19
|
23
|
14
|
| 2016 | 2017 | 2018 | 2019 | 2020 | 2021 | 2022 | 2023 | 2024 | 2025 |
Principal owners for this class
| Owner |
All patents
|
This class
|
|---|---|---|
| Safran Aircraft Engines | 6340 |
81 |
| Pratt & Whitney Canada Corp. | 4846 |
35 |
| Hamilton Sundstrand Corporation | 4934 |
13 |
| GE Avio S.r.l. | 286 |
13 |
| General Electric Company | 13863 |
9 |
| GE Aviation Systems Limited | 268 |
8 |
| Ratier-figeac SAS | 200 |
8 |
| Snecma | 1064 |
7 |
| Rolls-Royce PLC | 3140 |
6 |
| Safran Helicopter Engines | 769 |
6 |
| SNECMA S.A. | 1148 |
4 |
| Honeywell International Inc. | 13564 |
4 |
| Textron Innovations Inc. | 2351 |
4 |
| Woodward, Inc. | 647 |
4 |
| Safran Landing Systems | 729 |
3 |
| GE Aviation Czech s.r.o. | 15 |
3 |
| The Boeing Company | 20157 |
2 |
| Sikorsky Aircraft Corporation | 1097 |
2 |
| Kawasaki Jukogyo Kabushiki Kaisha (trading as Kawasaki Heavy Industries, Ltd.) | 3088 |
2 |
| Lockheed Martin Corporation | 3271 |
1 |
| Other owners | 16 |