- All sections
- F - Mechanical engineeringlightingheatingweaponsblasting
- F01D - Non-positive-displacement machines or engines, e.g. steam turbines
- F01D 25/12 - Cooling
Patent holdings for IPC class F01D 25/12
Total number of patents in this class: 2781
10-year publication summary
|
469
|
328
|
275
|
246
|
176
|
147
|
126
|
95
|
106
|
71
|
| 2017 | 2018 | 2019 | 2020 | 2021 | 2022 | 2023 | 2024 | 2025 | 2026 |
Principal owners for this class
| Owner |
All patents
|
This class
|
|---|---|---|
| Rtx Corporation | 10141 |
705 |
| General Electric Company | 13938 |
283 |
| GE Infrastructure Technology, LLC | 6154 |
204 |
| Safran Aircraft Engines | 6741 |
153 |
| United Technologies Corporation | 2218 |
152 |
| Pratt & Whitney Canada Corp. | 5523 |
151 |
| Rolls-Royce Corporation | 1680 |
65 |
| Rolls-Royce North American Technologies, Inc. | 1131 |
62 |
| Mitsubishi Heavy Industries, Ltd. | 9172 |
61 |
| Rolls-Royce PLC | 3222 |
60 |
| Siemens Energy Global GmbH & Co. KG | 3447 |
59 |
| Siemens AG | 23983 |
56 |
| Mitsubishi Power, Ltd. | 1834 |
48 |
| Mitsubishi Hitachi Power Systems, Ltd. | 991 |
32 |
| Hamilton Sundstrand Corporation | 5013 |
30 |
| Siemens Energy, Inc. | 1683 |
30 |
| SNECMA S.A. | 1145 |
28 |
| Doosan Heavy Industries & Construction Co., Ltd. | 580 |
28 |
| Ansaldo Energia Switzerland AG | 270 |
23 |
| Honeywell International Inc. | 12770 |
22 |
| Other owners | 529 |