- All sections
- F - Mechanical engineering; lighting; heating; weapons; blasting
- F04D - Non-positive-displacement pumps
- F04D 7/02 - Pumps adapted for handling specific fluids, e.g. by selection of specific materials for pumps or pump parts of centrifugal type
Patent holdings for IPC class F04D 7/02
Total number of patents in this class: 147
10-year publication summary
|
12
|
14
|
13
|
20
|
15
|
18
|
10
|
11
|
11
|
6
|
| 2015 | 2016 | 2017 | 2018 | 2019 | 2020 | 2021 | 2022 | 2023 | 2024 |
Principal owners for this class
| Owner |
All patents
|
This class
|
|---|---|---|
| Ebara Corporation | 1951 |
10 |
| NTN Corporation | 5008 |
6 |
| Weir Minerals Australia, Ltd. | 309 |
6 |
| Weir Slurry Group, Inc. | 68 |
6 |
| Nuhn Industries Limited | 56 |
4 |
| Mitsubishi Heavy Industries, Ltd. | 8217 |
3 |
| IHI Corporation | 3268 |
3 |
| JMS Co., Ltd. | 393 |
3 |
| Siemens AG | 24990 |
2 |
| Hamilton Sundstrand Corporation | 4525 |
2 |
| Kawasaki Heavy Industries, Limited | 1524 |
2 |
| Air Water Inc. | 135 |
2 |
| Boulden Company, Inc. | 4 |
2 |
| The Cleveland Clinic Foundation | 1591 |
2 |
| GEA TDS GmbH | 69 |
2 |
| Indiana University Research and Technology Corporation | 808 |
2 |
| KSB Aktiengesellschaft | 171 |
2 |
| Safran Aircraft Engines | 5739 |
2 |
| Saudi Arabian Oil Company | 11322 |
2 |
| Baker Hughes Oilfield Operations, LLC | 1885 |
2 |
| Other owners | 82 |