- All sections
- F - Mechanical engineeringlightingheatingweaponsblasting
- F01D - Non-positive-displacement machines or engines, e.g. steam turbines
- F01D 25/28 - Supporting or mounting arrangements, e.g. for turbine casing
Patent holdings for IPC class F01D 25/28
Total number of patents in this class: 2079
10-year publication summary
|
201
|
199
|
163
|
140
|
117
|
102
|
116
|
92
|
73
|
65
|
| 2017 | 2018 | 2019 | 2020 | 2021 | 2022 | 2023 | 2024 | 2025 | 2026 |
Principal owners for this class
| Owner |
All patents
|
This class
|
|---|---|---|
| Rtx Corporation | 10165 |
336 |
| Safran Aircraft Engines | 6750 |
201 |
| Pratt & Whitney Canada Corp. | 5528 |
170 |
| GE Infrastructure Technology, LLC | 6153 |
144 |
| General Electric Company | 13966 |
126 |
| Siemens AG | 23972 |
76 |
| Rolls-Royce PLC | 3224 |
67 |
| United Technologies Corporation | 2217 |
64 |
| Siemens Energy Global GmbH & Co. KG | 3461 |
44 |
| Mitsubishi Power, Ltd. | 1837 |
43 |
| SNECMA S.A. | 1145 |
36 |
| Mitsubishi Heavy Industries, Ltd. | 9188 |
36 |
| Siemens Energy, Inc. | 1681 |
34 |
| Rolls-Royce Corporation | 1681 |
33 |
| Nuovo Pignone Tecnologie S.r.l. | 1227 |
31 |
| MTU Aero Engines AG | 735 |
26 |
| Snecma | 1058 |
24 |
| Mitsubishi Hitachi Power Systems, Ltd. | 991 |
22 |
| Hamilton Sundstrand Corporation | 5013 |
21 |
| Rolls-Royce North American Technologies, Inc. | 1131 |
18 |
| Other owners | 527 |