- All sections
- F - Mechanical engineering; lighting; heating; weapons; blasting
- F01D - Non-positive-displacement machines or engines, e.g. steam turbines
- F01D 25/24 - Casings; Casing parts, e.g. diaphragms, casing fastenings
Patent holdings for IPC class F01D 25/24
Total number of patents in this class: 4493
10-year publication summary
|
692
|
563
|
472
|
339
|
393
|
257
|
212
|
214
|
164
|
8
|
| 2016 | 2017 | 2018 | 2019 | 2020 | 2021 | 2022 | 2023 | 2024 | 2025 |
Principal owners for this class
| Owner |
All patents
|
This class
|
|---|---|---|
| Rtx Corporation | 9077 |
791 |
| Safran Aircraft Engines | 6024 |
415 |
| General Electric Company | 17803 |
322 |
| Pratt & Whitney Canada Corp. | 4434 |
187 |
| Rolls-Royce Corporation | 1719 |
155 |
| Rolls-Royce PLC | 2981 |
148 |
| Mitsubishi Heavy Industries, Ltd. | 8515 |
127 |
| GE Infrastructure Technology, LLC | 6109 |
124 |
| BorgWarner Inc. | 2588 |
117 |
| Siemens AG | 24572 |
114 |
| Rolls-Royce North American Technologies, Inc. | 1133 |
111 |
| United Technologies Corporation | 2259 |
96 |
| IHI Corporation | 3356 |
78 |
| Mitsubishi Power, Ltd. | 1732 |
74 |
| SNECMA S.A. | 1152 |
63 |
| MTU Aero Engines AG | 652 |
63 |
| Siemens Energy Global GmbH & Co. KG | 2825 |
61 |
| Snecma | 1065 |
54 |
| JPMorgan Chase Bank, National Association | 8404 |
49 |
| Rohr, Inc. | 720 |
48 |
| Other owners | 1296 |