- All sections
- F - Mechanical engineeringlightingheatingweaponsblasting
- F01D - Non-positive-displacement machines or engines, e.g. steam turbines
- F01D 11/08 - Preventing or minimising internal leakage of working fluid, e.g. between stages for sealing space between rotor blade tips and stator
Patent holdings for IPC class F01D 11/08
Total number of patents in this class: 1455
10-year publication summary
|
210
|
158
|
121
|
119
|
138
|
97
|
56
|
44
|
47
|
42
|
| 2016 | 2017 | 2018 | 2019 | 2020 | 2021 | 2022 | 2023 | 2024 | 2025 |
Principal owners for this class
| Owner |
All patents
|
This class
|
|---|---|---|
| Rtx Corporation | 9461 |
422 |
| Rolls-Royce Corporation | 1760 |
135 |
| General Electric Company | 13858 |
115 |
| Safran Aircraft Engines | 6316 |
107 |
| Rolls-Royce North American Technologies, Inc. | 1170 |
78 |
| GE Infrastructure Technology, LLC | 6250 |
68 |
| United Technologies Corporation | 2241 |
55 |
| Pratt & Whitney Canada Corp. | 4834 |
44 |
| Rolls-Royce PLC | 3134 |
40 |
| Mitsubishi Heavy Industries, Ltd. | 8803 |
38 |
| Siemens AG | 24352 |
34 |
| Mitsubishi Hitachi Power Systems, Ltd. | 993 |
31 |
| Mitsubishi Power, Ltd. | 1788 |
26 |
| Rolls-Royce High Temperature Composites, Inc. | 134 |
19 |
| Siemens Energy Global GmbH & Co. KG | 3026 |
17 |
| MTU Aero Engines AG | 691 |
16 |
| Safran Ceramics | 412 |
14 |
| Siemens Energy, Inc. | 1708 |
13 |
| Honeywell International Inc. | 13561 |
11 |
| SNECMA S.A. | 1148 |
9 |
| Other owners | 163 |