- All sections
- F - Mechanical engineering; lighting; heating; weapons; blasting
- F04D - Non-positive-displacement pumps
- F04D 1/06 - Multi-stage pumps
Patent holdings for IPC class F04D 1/06
Total number of patents in this class: 416
10-year publication summary
|
47
|
38
|
69
|
45
|
54
|
49
|
43
|
24
|
37
|
10
|
| 2015 | 2016 | 2017 | 2018 | 2019 | 2020 | 2021 | 2022 | 2023 | 2024 |
Principal owners for this class
| Owner |
All patents
|
This class
|
|---|---|---|
| Sulzer Management AG | 613 |
33 |
| Halliburton Energy Services, Inc. | 20165 |
28 |
| Grundfos Holding A/S | 506 |
23 |
| Baker Hughes Holdings LLC | 3060 |
17 |
| Schlumberger Technology Corporation | 9690 |
13 |
| Saudi Arabian Oil Company | 11322 |
13 |
| KSB SE & Co. KGaA | 628 |
13 |
| Nuovo Pignone Tecnologie S.r.l. | 789 |
10 |
| Baker Hughes Oilfield Operations, LLC | 1885 |
8 |
| Baker Hughes ESP, Inc. | 72 |
7 |
| Extract Companies LLC | 17 |
7 |
| Schlumberger Canada Limited | 6913 |
6 |
| Mitsubishi Heavy Industries, Ltd. | 8217 |
6 |
| Fluid Handling LLC | 241 |
6 |
| ITT Manufacturing Enterprises LLC | 518 |
6 |
| KSB Aktiengesellschaft | 171 |
6 |
| Baker Hughes, a GE Company, LLC | 2171 |
5 |
| Schlumberger Technology B.v. | 4951 |
4 |
| DAB Pumps S.p.A. | 29 |
4 |
| Flowserve Management Company | 339 |
4 |
| Other owners | 197 |