- 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: 2005
10-year publication summary
|
251
|
183
|
189
|
160
|
124
|
107
|
87
|
103
|
85
|
52
|
| 2016 | 2017 | 2018 | 2019 | 2020 | 2021 | 2022 | 2023 | 2024 | 2025 |
Principal owners for this class
| Owner |
All patents
|
This class
|
|---|---|---|
| Rtx Corporation | 9576 |
325 |
| Safran Aircraft Engines | 6384 |
186 |
| GE Infrastructure Technology, LLC | 6190 |
143 |
| Pratt & Whitney Canada Corp. | 4885 |
138 |
| General Electric Company | 13861 |
122 |
| Siemens AG | 24337 |
77 |
| Rolls-Royce PLC | 3141 |
69 |
| United Technologies Corporation | 2238 |
64 |
| Siemens Energy Global GmbH & Co. KG | 3059 |
43 |
| Mitsubishi Power, Ltd. | 1810 |
42 |
| Rolls-Royce Corporation | 1751 |
37 |
| SNECMA S.A. | 1148 |
36 |
| Siemens Energy, Inc. | 1703 |
34 |
| Mitsubishi Heavy Industries, Ltd. | 8871 |
33 |
| Nuovo Pignone Tecnologie S.r.l. | 1035 |
31 |
| MTU Aero Engines AG | 696 |
24 |
| Snecma | 1064 |
24 |
| Mitsubishi Hitachi Power Systems, Ltd. | 991 |
22 |
| Hamilton Sundstrand Corporation | 4954 |
20 |
| Rolls-Royce North American Technologies, Inc. | 1176 |
19 |
| Other owners | 516 |