- 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: 561
10-year publication summary
|
40
|
52
|
34
|
45
|
68
|
49
|
52
|
43
|
37
|
23
|
| 2016 | 2017 | 2018 | 2019 | 2020 | 2021 | 2022 | 2023 | 2024 | 2025 |
Principal owners for this class
| Owner |
All patents
|
This class
|
|---|---|---|
| Grundfos Holding A/S | 569 |
27 |
| Ebara Corporation | 2223 |
20 |
| Halliburton Energy Services, Inc. | 21078 |
18 |
| NTN Corporation | 4969 |
14 |
| Schlumberger Technology Corporation | 11054 |
12 |
| Nidec GPM GmbH | 140 |
12 |
| Mitsubishi Heavy Industries, Ltd. | 8875 |
10 |
| Terumo Kabushiki Kaisha | 5638 |
10 |
| Mawetal LLC | 39 |
10 |
| Robert Bosch GmbH | 43063 |
9 |
| ECP Entwicklungsgesellschaft mbH | 233 |
9 |
| Baker Hughes Oilfield Operations, LLC | 2390 |
9 |
| Procyrion, Inc. | 50 |
8 |
| KSB SE & Co. KGaA | 702 |
7 |
| Schlumberger Canada Limited | 7432 |
6 |
| Schlumberger Technology B.v. | 5223 |
6 |
| Coavis | 80 |
6 |
| Ecotech, Inc. | 20 |
6 |
| Services Petroliers Schlumberger | 5884 |
6 |
| Luraco Health and Beauty, LLC. | 8 |
6 |
| Other owners | 350 |