- All sections
- F - Mechanical engineeringlightingheatingweaponsblasting
- F04D - Non-positive-displacement pumps
- F04D 29/046 - Bearings
Patent holdings for IPC class F04D 29/046
Total number of patents in this class: 598
10-year publication summary
|
58
|
37
|
49
|
71
|
51
|
52
|
47
|
39
|
26
|
29
|
| 2017 | 2018 | 2019 | 2020 | 2021 | 2022 | 2023 | 2024 | 2025 | 2026 |
Principal owners for this class
| Owner |
All patents
|
This class
|
|---|---|---|
| Grundfos Holding A/S | 607 |
27 |
| Halliburton Energy Services, Inc. | 21320 |
23 |
| Ebara Corporation | 2329 |
21 |
| Schlumberger Technology Corporation | 11820 |
13 |
| NTN Corporation | 4915 |
13 |
| Nidec GPM GmbH | 143 |
12 |
| Mitsubishi Heavy Industries, Ltd. | 9139 |
10 |
| Terumo Kabushiki Kaisha | 5815 |
10 |
| ECP Entwicklungsgesellschaft mbH | 254 |
10 |
| Mawetal LLC | 39 |
10 |
| KSB SE & Co. KGaA | 738 |
10 |
| Robert Bosch GmbH | 44176 |
9 |
| Baker Hughes Oilfield Operations, LLC | 2532 |
9 |
| Procyrion, Inc. | 53 |
8 |
| Schlumberger Canada Limited | 7601 |
6 |
| Schlumberger Technology B.v. | 5295 |
6 |
| LG Electronics Inc. | 75818 |
6 |
| Coavis | 86 |
6 |
| Ecotech, Inc. | 11 |
6 |
| Services Petroliers Schlumberger | 6023 |
6 |
| Other owners | 377 |