- All sections
- F - Mechanical engineeringlightingheatingweaponsblasting
- F01D - Non-positive-displacement machines or engines, e.g. steam turbines
- F01D 21/12 - Shutting-down of machines or engines, e.g. in emergencyRegulating, controlling, or safety means not otherwise provided for responsive to temperature
Patent holdings for IPC class F01D 21/12
Total number of patents in this class: 143
10-year publication summary
|
8
|
19
|
12
|
12
|
11
|
12
|
10
|
9
|
6
|
0
|
| 2017 | 2018 | 2019 | 2020 | 2021 | 2022 | 2023 | 2024 | 2025 | 2026 |
Principal owners for this class
| Owner |
All patents
|
This class
|
|---|---|---|
| GE Infrastructure Technology, LLC | 6205 |
14 |
| Pratt & Whitney Canada Corp. | 5050 |
12 |
| Safran Aircraft Engines | 6461 |
11 |
| Siemens AG | 24294 |
10 |
| General Electric Company | 13767 |
9 |
| Mitsubishi Heavy Industries, Ltd. | 8951 |
7 |
| Rolls-Royce PLC | 3176 |
6 |
| Mitsubishi Power, Ltd. | 1818 |
6 |
| Rolls-Royce Corporation | 1695 |
5 |
| Rtx Corporation | 9737 |
5 |
| Hamilton Sundstrand Corporation | 4994 |
4 |
| General Electric Technology GmbH | 1359 |
4 |
| Rolls-Royce North American Technologies, Inc. | 1146 |
3 |
| Safran Helicopter Engines | 797 |
3 |
| The Boeing Company | 20101 |
2 |
| Siemens Energy, Inc. | 1699 |
2 |
| Ansaldo Energia Switzerland AG | 271 |
2 |
| China General Nuclear Power Corporation | 284 |
2 |
| Emerson Process Management Power & Water Solutions, Inc. | 119 |
2 |
| Fluid Equipment Development Company, LLC | 90 |
2 |
| Other owners | 32 |