- 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: 3189
10-year publication summary
|
302
|
311
|
263
|
233
|
166
|
129
|
124
|
133
|
133
|
82
|
| 2017 | 2018 | 2019 | 2020 | 2021 | 2022 | 2023 | 2024 | 2025 | 2026 |
Principal owners for this class
| Owner |
All patents
|
This class
|
|---|---|---|
| Rtx Corporation | 10102 |
790 |
| Safran Aircraft Engines | 6694 |
306 |
| General Electric Company | 13899 |
256 |
| GE Infrastructure Technology, LLC | 6171 |
156 |
| Siemens AG | 24029 |
151 |
| Pratt & Whitney Canada Corp. | 5479 |
100 |
| Rolls-Royce Corporation | 1677 |
88 |
| United Technologies Corporation | 2220 |
84 |
| MTU Aero Engines AG | 728 |
76 |
| Rolls-Royce PLC | 3221 |
71 |
| Rolls-Royce North American Technologies, Inc. | 1129 |
67 |
| Siemens Energy Global GmbH & Co. KG | 3345 |
66 |
| Siemens Energy, Inc. | 1685 |
65 |
| Mitsubishi Heavy Industries, Ltd. | 9128 |
49 |
| Mitsubishi Power, Ltd. | 1833 |
48 |
| SNECMA S.A. | 1146 |
39 |
| Snecma | 1058 |
38 |
| Solar Turbines Incorporated | 511 |
31 |
| Nuovo Pignone Tecnologie S.r.l. | 1216 |
31 |
| IHI Corporation | 3535 |
30 |
| Other owners | 647 |