- 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: 3828
10-year publication summary
|
508
|
439
|
349
|
346
|
219
|
167
|
143
|
121
|
116
|
69
|
| 2017 | 2018 | 2019 | 2020 | 2021 | 2022 | 2023 | 2024 | 2025 | 2026 |
Principal owners for this class
| Owner |
All patents
|
This class
|
|---|---|---|
| Rtx Corporation | 10102 |
967 |
| GE Infrastructure Technology, LLC | 6171 |
429 |
| General Electric Company | 13899 |
393 |
| Siemens AG | 24029 |
262 |
| United Technologies Corporation | 2220 |
160 |
| Safran Aircraft Engines | 6694 |
156 |
| Siemens Energy Global GmbH & Co. KG | 3345 |
113 |
| Rolls-Royce PLC | 3221 |
99 |
| Siemens Energy, Inc. | 1685 |
95 |
| Rolls-Royce Corporation | 1677 |
90 |
| Mitsubishi Heavy Industries, Ltd. | 9128 |
80 |
| Mitsubishi Power, Ltd. | 1833 |
70 |
| Rolls-Royce North American Technologies, Inc. | 1129 |
64 |
| Pratt & Whitney Canada Corp. | 5479 |
62 |
| Doosan Heavy Industries & Construction Co., Ltd. | 580 |
61 |
| Honeywell International Inc. | 12778 |
51 |
| Solar Turbines Incorporated | 511 |
39 |
| IHI Corporation | 3535 |
38 |
| SNECMA S.A. | 1146 |
30 |
| Ansaldo Energia Switzerland AG | 270 |
30 |
| Other owners | 539 |