- All sections
- B - Performing operationstransporting
- B64C - Aeroplaneshelicopters
- B64C 11/42 - Blade pitch-changing mechanisms fluid, e.g. hydraulic non-automatic
Patent holdings for IPC class B64C 11/42
Total number of patents in this class: 20
10-year publication summary
|
1
|
2
|
3
|
4
|
1
|
1
|
0
|
2
|
0
|
0
|
| 2017 | 2018 | 2019 | 2020 | 2021 | 2022 | 2023 | 2024 | 2025 | 2026 |
Principal owners for this class
| Owner |
All patents
|
This class
|
|---|---|---|
| Pratt & Whitney Canada Corp. | 5059 |
4 |
| Rolls-Royce PLC | 3172 |
2 |
| Hamilton Sundstrand Corporation | 5001 |
2 |
| GE Aviation Systems Limited | 270 |
2 |
| GE Avio S.r.l. | 310 |
2 |
| Safran Aircraft Engines | 6474 |
2 |
| General Electric Company | 13776 |
1 |
| Honeywell International Inc. | 13561 |
1 |
| Berg Propulsion Technology AB | 5 |
1 |
| Hagele GmbH | 6 |
1 |
| Kitty Hawk Corporation | 305 |
1 |
| Woodward, Inc. | 665 |
1 |
| Other owners | 0 |