- All sections
- F - Mechanical engineering; lighting; heating; weapons; blasting
- F01D - Non-positive-displacement machines or engines, e.g. steam turbines
- F01D 9/04 - Nozzles; Nozzle boxes; Stator blades; Guide conduits forming ring or sector
Patent holdings for IPC class F01D 9/04
Total number of patents in this class: 3857
10-year publication summary
|
293
|
648
|
504
|
501
|
396
|
371
|
204
|
212
|
216
|
73
|
| 2015 | 2016 | 2017 | 2018 | 2019 | 2020 | 2021 | 2022 | 2023 | 2024 |
Principal owners for this class
| Owner |
All patents
|
This class
|
|---|---|---|
| Rtx Corporation | 8674 |
851 |
| General Electric Company | 18133 |
364 |
| Safran Aircraft Engines | 5739 |
353 |
| GE Infrastructure Technology, LLC | 5873 |
226 |
| Pratt & Whitney Canada Corp. | 4215 |
144 |
| Rolls-Royce PLC | 2944 |
144 |
| Rolls-Royce Corporation | 1686 |
130 |
| Siemens AG | 24990 |
122 |
| MTU Aero Engines AG | 622 |
103 |
| Rolls-Royce North American Technologies, Inc. | 1079 |
99 |
| Mitsubishi Heavy Industries, Ltd. | 8217 |
66 |
| Mitsubishi Power, Ltd. | 1680 |
63 |
| Siemens Energy Global GmbH & Co. KG | 2775 |
56 |
| SNECMA S.A. | 1160 |
52 |
| Honeywell International Inc. | 13799 |
50 |
| Safran Aero Boosters SA | 180 |
47 |
| Snecma | 1065 |
47 |
| IHI Corporation | 3268 |
44 |
| Siemens Energy, Inc. | 1770 |
40 |
| Rolls-Royce Deutschland Ltd & Co KG | 765 |
37 |
| Other owners | 819 |