- All sections
- F - Mechanical engineeringlightingheatingweaponsblasting
- F04D - Non-positive-displacement pumps
- F04D 13/14 - Combinations of two or more pumps the pumps being all of centrifugal type
Patent holdings for IPC class F04D 13/14
Total number of patents in this class: 202
10-year publication summary
|
16
|
19
|
17
|
12
|
17
|
16
|
18
|
12
|
19
|
11
|
| 2017 | 2018 | 2019 | 2020 | 2021 | 2022 | 2023 | 2024 | 2025 | 2026 |
Principal owners for this class
| Owner |
All patents
|
This class
|
|---|---|---|
| Grundfos Holding A/S | 608 |
9 |
| Halliburton Energy Services, Inc. | 21309 |
7 |
| Cooler Master Co., Ltd. | 268 |
7 |
| Ebara Corporation | 2344 |
6 |
| S. A. Armstrong Limited | 71 |
6 |
| Grundfos Management a/s | 167 |
6 |
| GHSP, Inc. | 140 |
5 |
| Zhejiang Sanhua Automotive Components Co., Ltd. | 335 |
5 |
| ABB Schweiz AG | 7665 |
4 |
| S.A. Armstrong Limited, | 88 |
4 |
| Saudi Arabian Oil Company | 14305 |
4 |
| Nidec Corporation | 2827 |
3 |
| Nidec GPM GmbH | 144 |
3 |
| Safran Aircraft Engines | 6727 |
3 |
| Buehler Motor GmbH | 2 |
2 |
| IHI Corporation | 3527 |
2 |
| Kickstart International, Inc. | 16 |
2 |
| KSB Aktiengesellschaft | 153 |
2 |
| L'Air Liquide, Societe Anonyme pour l'Etude et l'Exploitation des Procedes Georges Claude | 4122 |
2 |
| Nippon Oil Pump Co., Ltd. | 29 |
2 |
| Other owners | 118 |