- All sections
- F - Mechanical engineering; lighting; heating; weapons; blasting
- F04D - Non-positive-displacement pumps
- F04D 29/52 - Casings; Connections for working fluid for axial pumps
Patent holdings for IPC class F04D 29/52
Total number of patents in this class: 1420
10-year publication summary
|
114
|
240
|
232
|
214
|
146
|
126
|
105
|
101
|
80
|
44
|
| 2015 | 2016 | 2017 | 2018 | 2019 | 2020 | 2021 | 2022 | 2023 | 2024 |
Principal owners for this class
| Owner |
All patents
|
This class
|
|---|---|---|
| Rtx Corporation | 8674 |
145 |
| General Electric Company | 18133 |
80 |
| Safran Aircraft Engines | 5739 |
51 |
| Nidec Corporation | 2579 |
32 |
| Delta Electronics, Inc. | 2401 |
25 |
| Rolls-Royce PLC | 2944 |
24 |
| ebm-papst Mulfingen GmbH & Co. KG | 608 |
24 |
| Edwards Japan Limited | 376 |
22 |
| ECP Entwicklungsgesellschaft mbH | 215 |
20 |
| Pratt & Whitney Canada Corp. | 4215 |
19 |
| Rolls-Royce Corporation | 1686 |
19 |
| LG Electronics Inc. | 69257 |
18 |
| Hamilton Sundstrand Corporation | 4525 |
18 |
| Honeywell International Inc. | 13799 |
16 |
| Robert Bosch GmbH | 40953 |
16 |
| Mitsubishi Electric Corporation | 43934 |
16 |
| Safran Aero Boosters SA | 180 |
15 |
| SANYO Denki Co., Ltd. | 221 |
15 |
| Snecma | 1065 |
15 |
| Denso Corporation | 23338 |
14 |
| Other owners | 816 |