- All sections
- F - Mechanical engineering; lighting; heating; weapons; blasting
- F04D - Non-positive-displacement pumps
- F04D 29/68 - Combating cavitation, whirls, noise, vibration, or the like; Balancing by influencing boundary layers
Patent holdings for IPC class F04D 29/68
Total number of patents in this class: 553
10-year publication summary
|
46
|
73
|
47
|
62
|
58
|
38
|
29
|
27
|
27
|
7
|
| 2015 | 2016 | 2017 | 2018 | 2019 | 2020 | 2021 | 2022 | 2023 | 2024 |
Principal owners for this class
| Owner |
All patents
|
This class
|
|---|---|---|
| Safran Aircraft Engines | 5739 |
41 |
| Pratt & Whitney Canada Corp. | 4215 |
24 |
| IHI Corporation | 3268 |
16 |
| Rtx Corporation | 8674 |
15 |
| Honeywell International Inc. | 13799 |
14 |
| Snecma | 1065 |
14 |
| SNECMA S.A. | 1160 |
13 |
| Mitsubishi Heavy Industries, Ltd. | 8217 |
13 |
| General Electric Company | 18133 |
12 |
| Robert Bosch GmbH | 40953 |
12 |
| BorgWarner Inc. | 2604 |
12 |
| MTU Aero Engines GmbH | 565 |
11 |
| Siemens AG | 24990 |
10 |
| Rolls-Royce PLC | 2944 |
9 |
| Rolls-Royce Deutschland Ltd & Co KG | 765 |
9 |
| Safran Aero Boosters SA | 180 |
9 |
| Safran Helicopter Engines | 676 |
9 |
| Ford Global Technologies, LLC | 19702 |
8 |
| Mitsubishi Electric Corporation | 43934 |
8 |
| Carrier Corporation | 4759 |
8 |
| Other owners | 286 |