- All sections
- F - Mechanical engineeringlightingheatingweaponsblasting
- F04D - Non-positive-displacement pumps
- F04D 29/68 - Combating cavitation, whirls, noise, vibration, or the likeBalancing by influencing boundary layers
Patent holdings for IPC class F04D 29/68
Total number of patents in this class: 603
10-year publication summary
|
47
|
62
|
58
|
38
|
29
|
28
|
30
|
26
|
19
|
17
|
| 2017 | 2018 | 2019 | 2020 | 2021 | 2022 | 2023 | 2024 | 2025 | 2026 |
Principal owners for this class
| Owner |
All patents
|
This class
|
|---|---|---|
| Safran Aircraft Engines | 6767 |
47 |
| Pratt & Whitney Canada Corp. | 5531 |
28 |
| IHI Corporation | 3543 |
19 |
| Rtx Corporation | 10182 |
17 |
| Mitsubishi Heavy Industries, Ltd. | 9204 |
14 |
| Snecma | 1057 |
14 |
| SNECMA S.A. | 1145 |
13 |
| Rolls-Royce Corporation | 1681 |
13 |
| General Electric Company | 13982 |
12 |
| Honeywell International Inc. | 12766 |
12 |
| Robert Bosch GmbH | 44327 |
12 |
| BorgWarner Inc. | 2586 |
12 |
| Rolls-Royce North American Technologies, Inc. | 1132 |
12 |
| Rolls-Royce PLC | 3224 |
11 |
| MTU Aero Engines GmbH | 408 |
10 |
| Siemens AG | 23956 |
9 |
| Rolls-Royce Deutschland Ltd & Co KG | 868 |
9 |
| Safran Aero Boosters SA | 185 |
9 |
| Mitsubishi Electric Corporation | 48351 |
8 |
| Carrier Corporation | 3954 |
8 |
| Other owners | 314 |