- All sections
- F - Mechanical engineeringlightingheatingweaponsblasting
- F04D - Non-positive-displacement pumps
- F04D 29/32 - Rotors specially adapted for elastic fluids for axial-flow pumps
Patent holdings for IPC class F04D 29/32
Total number of patents in this class: 2497
10-year publication summary
|
438
|
458
|
350
|
224
|
224
|
153
|
155
|
134
|
119
|
64
|
| 2016 | 2017 | 2018 | 2019 | 2020 | 2021 | 2022 | 2023 | 2024 | 2025 |
Principal owners for this class
| Owner |
All patents
|
This class
|
|---|---|---|
| Rtx Corporation | 9313 |
442 |
| Safran Aircraft Engines | 6250 |
249 |
| General Electric Company | 13830 |
165 |
| GE Infrastructure Technology, LLC | 6196 |
76 |
| Pratt & Whitney Canada Corp. | 4629 |
57 |
| Rolls-Royce PLC | 3072 |
50 |
| Snecma | 1065 |
46 |
| SNECMA S.A. | 1145 |
40 |
| Delta Electronics, Inc. | 2589 |
37 |
| Mitsubishi Electric Corporation | 45860 |
34 |
| Hamilton Sundstrand Corporation | 4834 |
31 |
| Hunter Fan Company | 763 |
31 |
| MTU Aero Engines AG | 671 |
31 |
| Rolls-Royce Corporation | 1727 |
31 |
| Nidec Corporation | 2644 |
28 |
| LG Electronics Inc. | 72559 |
27 |
| Siemens Energy Global GmbH & Co. KG | 2923 |
26 |
| Valeo Systemes Thermiques | 2702 |
24 |
| ebm-papst Mulfingen GmbH & Co. KG | 610 |
23 |
| IHI Corporation | 3413 |
23 |
| Other owners | 1026 |