- All sections
- F - Mechanical engineering; lighting; heating; weapons; blasting
- 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: 2388
10-year publication summary
|
170
|
438
|
458
|
350
|
224
|
223
|
151
|
151
|
127
|
43
|
| 2015 | 2016 | 2017 | 2018 | 2019 | 2020 | 2021 | 2022 | 2023 | 2024 |
Principal owners for this class
| Owner |
All patents
|
This class
|
|---|---|---|
| Rtx Corporation | 8674 |
432 |
| Safran Aircraft Engines | 5739 |
232 |
| General Electric Company | 18133 |
159 |
| GE Infrastructure Technology, LLC | 5873 |
74 |
| Pratt & Whitney Canada Corp. | 4215 |
54 |
| Rolls-Royce PLC | 2944 |
51 |
| Snecma | 1065 |
46 |
| SNECMA S.A. | 1160 |
41 |
| Delta Electronics, Inc. | 2401 |
32 |
| Rolls-Royce Corporation | 1686 |
31 |
| Mitsubishi Electric Corporation | 43934 |
30 |
| Hunter Fan Company | 699 |
30 |
| MTU Aero Engines AG | 622 |
30 |
| Hamilton Sundstrand Corporation | 4525 |
29 |
| Siemens Energy Global GmbH & Co. KG | 2775 |
27 |
| Nidec Corporation | 2579 |
26 |
| IHI Corporation | 3268 |
25 |
| LG Electronics Inc. | 69257 |
24 |
| Valeo Systemes Thermiques | 2471 |
23 |
| Honeywell International Inc. | 13799 |
21 |
| Other owners | 971 |