- 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: 240
10-year publication summary
|
10
|
23
|
15
|
15
|
13
|
8
|
19
|
8
|
6
|
4
|
| 2017 | 2018 | 2019 | 2020 | 2021 | 2022 | 2023 | 2024 | 2025 | 2026 |
Principal owners for this class
| Owner |
All patents
|
This class
|
|---|---|---|
| Halliburton Energy Services, Inc. | 21338 |
18 |
| Schlumberger Canada Limited | 7606 |
7 |
| Schlumberger Technology Corporation | 11818 |
6 |
| Schlumberger Technology B.v. | 5298 |
6 |
| IHI Corporation | 3535 |
6 |
| Services Petroliers Schlumberger | 6024 |
6 |
| Safran Aircraft Engines | 6694 |
5 |
| Baker Hughes Oilfield Operations, LLC | 2527 |
5 |
| General Electric Company | 13899 |
4 |
| Schlumberger Holdings Limited | 2699 |
4 |
| JPMorgan Chase Bank, National Association | 8956 |
4 |
| GE Oil & Gas ESP, Inc. | 79 |
4 |
| GE Infrastructure Technology, LLC | 6171 |
4 |
| Baker Hughes, a GE Company, LLC | 2056 |
4 |
| Rtx Corporation | 10102 |
4 |
| Baker Hughes Incorporated | 4934 |
3 |
| BorgWarner Inc. | 2583 |
3 |
| Edwards Limited | 774 |
3 |
| Nikkiso Co., Ltd. | 791 |
3 |
| Prad Research and Development Limited | 2661 |
3 |
| Other owners | 138 |