- All sections
- F - Mechanical engineering; lighting; heating; weapons; blasting
- 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: 2943
10-year publication summary
|
323
|
437
|
302
|
311
|
263
|
233
|
165
|
129
|
118
|
35
|
| 2015 | 2016 | 2017 | 2018 | 2019 | 2020 | 2021 | 2022 | 2023 | 2024 |
Principal owners for this class
| Owner |
All patents
|
This class
|
|---|---|---|
| Rtx Corporation | 8674 |
726 |
| Safran Aircraft Engines | 5739 |
251 |
| General Electric Company | 18133 |
217 |
| Siemens AG | 24990 |
154 |
| GE Infrastructure Technology, LLC | 5873 |
153 |
| United Technologies Corporation | 2328 |
88 |
| Rolls-Royce Corporation | 1686 |
79 |
| MTU Aero Engines AG | 622 |
73 |
| Pratt & Whitney Canada Corp. | 4215 |
66 |
| Rolls-Royce PLC | 2944 |
66 |
| Rolls-Royce North American Technologies, Inc. | 1079 |
66 |
| Siemens Energy, Inc. | 1770 |
65 |
| Siemens Energy Global GmbH & Co. KG | 2775 |
54 |
| Mitsubishi Heavy Industries, Ltd. | 8217 |
48 |
| Mitsubishi Power, Ltd. | 1680 |
48 |
| SNECMA S.A. | 1160 |
39 |
| Snecma | 1065 |
38 |
| IHI Corporation | 3268 |
34 |
| Solar Turbines Incorporated | 452 |
30 |
| Honeywell International Inc. | 13799 |
28 |
| Other owners | 620 |