- All sections
- F - Mechanical engineeringlightingheatingweaponsblasting
- F01D - Non-positive-displacement machines or engines, e.g. steam turbines
- F01D 21/14 - Shutting-down of machines or engines, e.g. in emergencyRegulating, controlling, or safety means not otherwise provided for responsive to other specific conditions
Patent holdings for IPC class F01D 21/14
Total number of patents in this class: 274
10-year publication summary
|
25
|
30
|
44
|
27
|
32
|
26
|
16
|
10
|
16
|
9
|
| 2016 | 2017 | 2018 | 2019 | 2020 | 2021 | 2022 | 2023 | 2024 | 2025 |
Principal owners for this class
| Owner |
All patents
|
This class
|
|---|---|---|
| Pratt & Whitney Canada Corp. | 4722 |
53 |
| GE Infrastructure Technology, LLC | 6213 |
27 |
| General Electric Company | 13762 |
19 |
| Safran Aircraft Engines | 6271 |
16 |
| Rtx Corporation | 9352 |
16 |
| Rolls-Royce PLC | 3088 |
14 |
| Rolls-Royce Deutschland Ltd & Co KG | 815 |
10 |
| Rolls-Royce Corporation | 1736 |
8 |
| SNECMA S.A. | 1147 |
7 |
| Siemens AG | 24518 |
5 |
| Alstom Technology Ltd | 1108 |
5 |
| Mitsubishi Heavy Industries, Ltd. | 8703 |
4 |
| Siemens Energy, Inc. | 1688 |
4 |
| Rolls-Royce North American Technologies, Inc. | 1168 |
4 |
| Safran Helicopter Engines | 756 |
4 |
| Airbus Helicopters | 970 |
3 |
| Doosan Heavy Industries & Construction Co., Ltd. | 581 |
3 |
| Emerson Process Management Regulator Technologies, Inc. | 382 |
3 |
| Rohr, Inc. | 745 |
3 |
| TLV Co., Ltd. | 334 |
3 |
| Other owners | 63 |