- 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: 4389
10-year publication summary
|
469
|
692
|
563
|
472
|
339
|
393
|
255
|
208
|
207
|
51
|
| 2015 | 2016 | 2017 | 2018 | 2019 | 2020 | 2021 | 2022 | 2023 | 2024 |
Principal owners for this class
| Owner |
All patents
|
This class
|
|---|---|---|
| Rtx Corporation | 8674 |
783 |
| Safran Aircraft Engines | 5739 |
394 |
| General Electric Company | 18133 |
316 |
| Pratt & Whitney Canada Corp. | 4215 |
181 |
| Rolls-Royce Corporation | 1686 |
149 |
| Rolls-Royce PLC | 2944 |
147 |
| Mitsubishi Heavy Industries, Ltd. | 8217 |
124 |
| BorgWarner Inc. | 2604 |
118 |
| GE Infrastructure Technology, LLC | 5873 |
116 |
| Siemens AG | 24990 |
115 |
| Rolls-Royce North American Technologies, Inc. | 1079 |
109 |
| United Technologies Corporation | 2328 |
97 |
| IHI Corporation | 3268 |
74 |
| Mitsubishi Power, Ltd. | 1680 |
73 |
| SNECMA S.A. | 1160 |
63 |
| MTU Aero Engines AG | 622 |
63 |
| Siemens Energy Global GmbH & Co. KG | 2775 |
58 |
| Snecma | 1065 |
54 |
| JPMorgan Chase Bank, National Association | 10964 |
51 |
| Rohr, Inc. | 653 |
48 |
| Other owners | 1256 |