- All sections
- F - Mechanical engineeringlightingheatingweaponsblasting
- F01D - Non-positive-displacement machines or engines, e.g. steam turbines
- F01D 5/18 - Hollow bladesHeating, heat-insulating, or cooling means on blades
Patent holdings for IPC class F01D 5/18
Total number of patents in this class: 3756
10-year publication summary
|
465
|
508
|
439
|
349
|
346
|
219
|
167
|
142
|
118
|
57
|
| 2016 | 2017 | 2018 | 2019 | 2020 | 2021 | 2022 | 2023 | 2024 | 2025 |
Principal owners for this class
| Owner |
All patents
|
This class
|
|---|---|---|
| Rtx Corporation | 9297 |
937 |
| GE Infrastructure Technology, LLC | 6192 |
426 |
| General Electric Company | 13829 |
385 |
| Siemens AG | 24561 |
272 |
| United Technologies Corporation | 2247 |
161 |
| Safran Aircraft Engines | 6237 |
155 |
| Siemens Energy Global GmbH & Co. KG | 2916 |
104 |
| Rolls-Royce PLC | 3047 |
102 |
| Rolls-Royce Corporation | 1726 |
96 |
| Siemens Energy, Inc. | 1693 |
95 |
| Mitsubishi Heavy Industries, Ltd. | 8647 |
71 |
| Rolls-Royce North American Technologies, Inc. | 1160 |
69 |
| Mitsubishi Power, Ltd. | 1757 |
67 |
| Doosan Heavy Industries & Construction Co., Ltd. | 581 |
61 |
| Pratt & Whitney Canada Corp. | 4602 |
59 |
| Honeywell International Inc. | 13564 |
48 |
| IHI Corporation | 3408 |
39 |
| Solar Turbines Incorporated | 473 |
35 |
| Ansaldo Energia Switzerland AG | 278 |
31 |
| SNECMA S.A. | 1145 |
30 |
| Other owners | 513 |