- All sections
- F - Mechanical engineering; lighting; heating; weapons; blasting
- F01D - Non-positive-displacement machines or engines, e.g. steam turbines
- F01D 5/28 - Selecting particular materials; Measures against erosion or corrosion
Patent holdings for IPC class F01D 5/28
Total number of patents in this class: 3990
10-year publication summary
|
364
|
527
|
380
|
386
|
373
|
338
|
297
|
199
|
210
|
37
|
| 2015 | 2016 | 2017 | 2018 | 2019 | 2020 | 2021 | 2022 | 2023 | 2024 |
Principal owners for this class
| Owner |
All patents
|
This class
|
|---|---|---|
| Rtx Corporation | 8674 |
617 |
| General Electric Company | 18133 |
428 |
| Safran Aircraft Engines | 5739 |
416 |
| Siemens AG | 24990 |
241 |
| Rolls-Royce Corporation | 1686 |
183 |
| GE Infrastructure Technology, LLC | 5873 |
180 |
| Rolls-Royce PLC | 2944 |
137 |
| Rolls-Royce North American Technologies, Inc. | 1079 |
98 |
| SNECMA S.A. | 1160 |
76 |
| Safran Ceramics | 366 |
73 |
| SAFRAN S.A. | 518 |
69 |
| Snecma | 1065 |
67 |
| Siemens Energy, Inc. | 1770 |
59 |
| IHI Corporation | 3268 |
58 |
| Siemens Energy Global GmbH & Co. KG | 2775 |
56 |
| Honeywell International Inc. | 13799 |
53 |
| Mitsubishi Heavy Industries, Ltd. | 8217 |
53 |
| MTU Aero Engines GmbH | 565 |
52 |
| Pratt & Whitney Canada Corp. | 4215 |
49 |
| Herakles | 169 |
42 |
| Other owners | 983 |