- All sections
- F - Mechanical engineering; lighting; heating; weapons; blasting
- F01D - Non-positive-displacement machines or engines, e.g. steam turbines
- F01D 5/18 - Hollow blades; Heating, heat-insulating, or cooling means on blades
Patent holdings for IPC class F01D 5/18
Total number of patents in this class: 3720
10-year publication summary
|
364
|
465
|
508
|
438
|
349
|
346
|
219
|
164
|
141
|
46
|
| 2015 | 2016 | 2017 | 2018 | 2019 | 2020 | 2021 | 2022 | 2023 | 2024 |
Principal owners for this class
| Owner |
All patents
|
This class
|
|---|---|---|
| Rtx Corporation | 8674 |
900 |
| GE Infrastructure Technology, LLC | 5873 |
425 |
| General Electric Company | 18133 |
377 |
| Siemens AG | 24990 |
279 |
| United Technologies Corporation | 2328 |
166 |
| Safran Aircraft Engines | 5739 |
147 |
| Rolls-Royce PLC | 2944 |
105 |
| Siemens Energy Global GmbH & Co. KG | 2775 |
104 |
| Siemens Energy, Inc. | 1770 |
102 |
| Rolls-Royce Corporation | 1686 |
97 |
| Rolls-Royce North American Technologies, Inc. | 1079 |
68 |
| Mitsubishi Power, Ltd. | 1680 |
65 |
| Mitsubishi Heavy Industries, Ltd. | 8217 |
61 |
| Doosan Heavy Industries & Construction Co., Ltd. | 604 |
61 |
| Pratt & Whitney Canada Corp. | 4215 |
59 |
| Honeywell International Inc. | 13799 |
51 |
| IHI Corporation | 3268 |
42 |
| Alstom Technology Ltd | 1196 |
35 |
| Solar Turbines Incorporated | 452 |
35 |
| Ansaldo Energia Switzerland AG | 293 |
33 |
| Other owners | 508 |