- All sections
- F - Mechanical engineeringlightingheatingweaponsblasting
- F01D - Non-positive-displacement machines or engines, e.g. steam turbines
- F01D 5/28 - Selecting particular materialsMeasures against erosion or corrosion
Patent holdings for IPC class F01D 5/28
Total number of patents in this class: 4419
10-year publication summary
|
380
|
387
|
375
|
338
|
304
|
206
|
231
|
191
|
213
|
116
|
| 2017 | 2018 | 2019 | 2020 | 2021 | 2022 | 2023 | 2024 | 2025 | 2026 |
Principal owners for this class
| Owner |
All patents
|
This class
|
|---|---|---|
| Rtx Corporation | 10127 |
734 |
| General Electric Company | 13915 |
524 |
| Safran Aircraft Engines | 6727 |
516 |
| Siemens AG | 23996 |
203 |
| GE Infrastructure Technology, LLC | 6159 |
188 |
| Rolls-Royce Corporation | 1680 |
185 |
| Rolls-Royce PLC | 3224 |
153 |
| Rolls-Royce North American Technologies, Inc. | 1130 |
102 |
| Safran Ceramics | 448 |
100 |
| SAFRAN S.A. | 794 |
83 |
| SNECMA S.A. | 1145 |
74 |
| Snecma | 1058 |
67 |
| Siemens Energy Global GmbH & Co. KG | 3432 |
64 |
| IHI Corporation | 3527 |
61 |
| Pratt & Whitney Canada Corp. | 5517 |
59 |
| Siemens Energy, Inc. | 1686 |
58 |
| Mitsubishi Heavy Industries, Ltd. | 9168 |
54 |
| Centre National de La Recherche Scientifique | 11059 |
48 |
| Honeywell International Inc. | 12776 |
47 |
| United Technologies Corporation | 2218 |
41 |
| Other owners | 1058 |