- All sections
- F - Mechanical engineeringlightingheatingweaponsblasting
- F01D - Non-positive-displacement machines or engines, e.g. steam turbines
- F01D 11/00 - Preventing or minimising internal leakage of working fluid, e.g. between stages
Patent holdings for IPC class F01D 11/00
Total number of patents in this class: 3034
10-year publication summary
|
437
|
302
|
311
|
263
|
233
|
165
|
128
|
123
|
120
|
55
|
| 2016 | 2017 | 2018 | 2019 | 2020 | 2021 | 2022 | 2023 | 2024 | 2025 |
Principal owners for this class
| Owner |
All patents
|
This class
|
|---|---|---|
| Rtx Corporation | 9290 |
754 |
| Safran Aircraft Engines | 6225 |
279 |
| General Electric Company | 13823 |
231 |
| Siemens AG | 24568 |
154 |
| GE Infrastructure Technology, LLC | 6191 |
153 |
| Rolls-Royce Corporation | 1726 |
86 |
| United Technologies Corporation | 2247 |
85 |
| Pratt & Whitney Canada Corp. | 4533 |
78 |
| MTU Aero Engines AG | 670 |
73 |
| Rolls-Royce North American Technologies, Inc. | 1159 |
67 |
| Rolls-Royce PLC | 3033 |
66 |
| Siemens Energy, Inc. | 1694 |
64 |
| Siemens Energy Global GmbH & Co. KG | 2912 |
58 |
| Mitsubishi Heavy Industries, Ltd. | 8641 |
48 |
| Mitsubishi Power, Ltd. | 1758 |
48 |
| SNECMA S.A. | 1145 |
39 |
| Snecma | 1065 |
38 |
| Solar Turbines Incorporated | 472 |
31 |
| IHI Corporation | 3405 |
30 |
| Mitsubishi Hitachi Power Systems, Ltd. | 993 |
27 |
| Other owners | 625 |