- All sections
- F - Mechanical engineeringlightingheatingweaponsblasting
- F04D - Non-positive-displacement pumps
- F04D 29/52 - CasingsConnections for working fluid for axial pumps
Patent holdings for IPC class F04D 29/52
Total number of patents in this class: 1539
10-year publication summary
|
240
|
232
|
214
|
147
|
126
|
107
|
103
|
84
|
109
|
64
|
| 2016 | 2017 | 2018 | 2019 | 2020 | 2021 | 2022 | 2023 | 2024 | 2025 |
Principal owners for this class
| Owner |
All patents
|
This class
|
|---|---|---|
| Rtx Corporation | 9313 |
146 |
| General Electric Company | 13830 |
83 |
| Safran Aircraft Engines | 6250 |
56 |
| Nidec Corporation | 2644 |
36 |
| Rolls-Royce Corporation | 1727 |
28 |
| Delta Electronics, Inc. | 2589 |
27 |
| ebm-papst Mulfingen GmbH & Co. KG | 610 |
25 |
| ECP Entwicklungsgesellschaft mbH | 230 |
25 |
| Rolls-Royce PLC | 3072 |
24 |
| Edwards Japan Limited | 418 |
23 |
| Magenta Medical Ltd. | 168 |
22 |
| Pratt & Whitney Canada Corp. | 4629 |
21 |
| Rolls-Royce North American Technologies, Inc. | 1162 |
21 |
| LG Electronics Inc. | 72559 |
18 |
| Hamilton Sundstrand Corporation | 4834 |
18 |
| Robert Bosch GmbH | 42505 |
17 |
| Honeywell International Inc. | 13562 |
16 |
| Mitsubishi Electric Corporation | 45860 |
16 |
| SANYO Denki Co., Ltd. | 208 |
16 |
| Safran Aero Boosters SA | 182 |
15 |
| Other owners | 886 |