- All sections
- F - Mechanical engineeringlightingheatingweaponsblasting
- F04D - Non-positive-displacement pumps
- F04D 29/54 - Fluid-guiding means, e.g. diffusers
Patent holdings for IPC class F04D 29/54
Total number of patents in this class: 1999
10-year publication summary
|
240
|
260
|
281
|
165
|
171
|
102
|
129
|
109
|
111
|
73
|
| 2016 | 2017 | 2018 | 2019 | 2020 | 2021 | 2022 | 2023 | 2024 | 2025 |
Principal owners for this class
| Owner |
All patents
|
This class
|
|---|---|---|
| Rtx Corporation | 9395 |
225 |
| Safran Aircraft Engines | 6287 |
115 |
| General Electric Company | 13808 |
92 |
| GE Infrastructure Technology, LLC | 6228 |
67 |
| IHI Corporation | 3440 |
50 |
| Pratt & Whitney Canada Corp. | 4765 |
41 |
| Mitsubishi Electric Corporation | 46160 |
37 |
| MTU Aero Engines AG | 681 |
31 |
| ebm-papst Mulfingen GmbH & Co. KG | 616 |
30 |
| Siemens AG | 24461 |
25 |
| Delta Electronics, Inc. | 2616 |
25 |
| Safran Aero Boosters SA | 181 |
25 |
| Snecma | 1064 |
23 |
| SNECMA S.A. | 1147 |
22 |
| Denso Corporation | 24334 |
22 |
| Magenta Medical Ltd. | 172 |
22 |
| Mitsubishi Power, Ltd. | 1764 |
22 |
| Mitsubishi Heavy Industries, Ltd. | 8735 |
21 |
| Rolls-Royce PLC | 3104 |
20 |
| Ziehl-abegg SE | 212 |
19 |
| Other owners | 1065 |