- All sections
- F - Mechanical engineering; lighting; heating; weapons; blasting
- 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: 1905
10-year publication summary
|
233
|
267
|
201
|
199
|
163
|
140
|
115
|
104
|
111
|
31
|
| 2015 | 2016 | 2017 | 2018 | 2019 | 2020 | 2021 | 2022 | 2023 | 2024 |
Principal owners for this class
| Owner |
All patents
|
This class
|
|---|---|---|
| Rtx Corporation | 8674 |
305 |
| Safran Aircraft Engines | 5739 |
170 |
| GE Infrastructure Technology, LLC | 5873 |
139 |
| Pratt & Whitney Canada Corp. | 4215 |
125 |
| General Electric Company | 18133 |
118 |
| Siemens AG | 24990 |
80 |
| Rolls-Royce PLC | 2944 |
67 |
| United Technologies Corporation | 2328 |
66 |
| Mitsubishi Power, Ltd. | 1680 |
39 |
| Siemens Energy Global GmbH & Co. KG | 2775 |
39 |
| Rolls-Royce Corporation | 1686 |
37 |
| SNECMA S.A. | 1160 |
36 |
| Siemens Energy, Inc. | 1770 |
34 |
| Mitsubishi Heavy Industries, Ltd. | 8217 |
29 |
| Nuovo Pignone Tecnologie S.r.l. | 789 |
27 |
| Snecma | 1065 |
24 |
| MTU Aero Engines AG | 622 |
23 |
| Mitsubishi Hitachi Power Systems, Ltd. | 999 |
22 |
| Hamilton Sundstrand Corporation | 4525 |
19 |
| Honeywell International Inc. | 13799 |
18 |
| Other owners | 488 |