- All sections
- F - Mechanical engineeringlightingheatingweaponsblasting
- F01D - Non-positive-displacement machines or engines, e.g. steam turbines
- F01D 21/02 - Shutting-down responsive to overspeed
Patent holdings for IPC class F01D 21/02
Total number of patents in this class: 154
10-year publication summary
|
19
|
16
|
23
|
11
|
12
|
16
|
9
|
5
|
6
|
3
|
| 2016 | 2017 | 2018 | 2019 | 2020 | 2021 | 2022 | 2023 | 2024 | 2025 |
Principal owners for this class
| Owner |
All patents
|
This class
|
|---|---|---|
| Pratt & Whitney Canada Corp. | 4629 |
17 |
| Safran Aircraft Engines | 6250 |
10 |
| Safran Helicopter Engines | 750 |
9 |
| Siemens AG | 24547 |
8 |
| GE Infrastructure Technology, LLC | 6196 |
8 |
| General Electric Company | 13830 |
7 |
| ABB Schweiz AG | 6896 |
7 |
| Rtx Corporation | 9313 |
7 |
| Airbus Helicopters | 965 |
6 |
| Rolls-Royce PLC | 3072 |
5 |
| Hamilton Sundstrand Corporation | 4834 |
4 |
| SNECMA S.A. | 1145 |
3 |
| Honeywell International Inc. | 13562 |
3 |
| General Electric Technology GmbH | 1459 |
3 |
| Rolls-Royce North American Technologies, Inc. | 1162 |
3 |
| Safran Electronics & Defense | 1273 |
3 |
| Solar Turbines Incorporated | 474 |
3 |
| Turbomeca | 218 |
3 |
| China Shenhua Energy Company Limited | 24 |
2 |
| Microturbo | 28 |
2 |
| Other owners | 41 |