- All sections
- F - Mechanical engineeringlightingheatingweaponsblasting
- F04D - Non-positive-displacement pumps
- F04D 29/04 - Shafts or bearings, or assemblies thereof
Patent holdings for IPC class F04D 29/04
Total number of patents in this class: 250
10-year publication summary
|
14
|
9
|
20
|
13
|
12
|
13
|
8
|
18
|
7
|
2
|
| 2016 | 2017 | 2018 | 2019 | 2020 | 2021 | 2022 | 2023 | 2024 | 2025 |
Principal owners for this class
| Owner |
All patents
|
This class
|
|---|---|---|
| Halliburton Energy Services, Inc. | 20977 |
18 |
| Schlumberger Canada Limited | 7373 |
7 |
| Schlumberger Technology Corporation | 10914 |
6 |
| Schlumberger Technology B.v. | 5189 |
6 |
| IHI Corporation | 3453 |
6 |
| Safran Aircraft Engines | 6317 |
6 |
| Services Petroliers Schlumberger | 5835 |
6 |
| Schlumberger Holdings Limited | 2800 |
4 |
| JPMorgan Chase Bank, National Association | 8592 |
4 |
| Edwards Limited | 787 |
4 |
| GE Oil & Gas ESP, Inc. | 82 |
4 |
| GE Infrastructure Technology, LLC | 6252 |
4 |
| Baker Hughes Oilfield Operations, LLC | 2334 |
4 |
| Baker Hughes, a GE Company, LLC | 2109 |
4 |
| Baker Hughes Holdings LLC | 2999 |
4 |
| Rtx Corporation | 9483 |
4 |
| General Electric Company | 13859 |
3 |
| Baker Hughes Incorporated | 5243 |
3 |
| BorgWarner Inc. | 2603 |
3 |
| Prad Research and Development Limited | 2690 |
3 |
| Other owners | 147 |