- All sections
- F - Mechanical engineeringlightingheatingweaponsblasting
- F04D - Non-positive-displacement pumps
- F04D 29/044 - Arrangements for joining or assembling shafts
Patent holdings for IPC class F04D 29/044
Total number of patents in this class: 127
10-year publication summary
|
7
|
11
|
16
|
11
|
13
|
8
|
10
|
16
|
7
|
6
|
| 2016 | 2017 | 2018 | 2019 | 2020 | 2021 | 2022 | 2023 | 2024 | 2025 |
Principal owners for this class
| Owner |
All patents
|
This class
|
|---|---|---|
| Halliburton Energy Services, Inc. | 20911 |
9 |
| Baker Hughes Oilfield Operations, LLC | 2302 |
7 |
| US Well Services LLC | 226 |
6 |
| Mitsubishi Heavy Industries Compressor Corporation | 631 |
4 |
| Schlumberger Technology Corporation | 10780 |
3 |
| GREE Electric Appliances, Inc. of Zhuhai | 3246 |
3 |
| ITT Manufacturing Enterprises LLC | 407 |
3 |
| KSB Aktiengesellschaft | 162 |
3 |
| Grundfos Holding A/S | 558 |
3 |
| KSB SE & Co. KGaA | 699 |
3 |
| General Electric Company | 13810 |
2 |
| Schlumberger Canada Limited | 7332 |
2 |
| Schlumberger Technology B.v. | 5176 |
2 |
| Robert Bosch GmbH | 42705 |
2 |
| Ebara Corporation | 2174 |
2 |
| Aisan Kogyo Kabushiki Kaisha | 745 |
2 |
| Asia Vital Components Co., Ltd. | 408 |
2 |
| Ecotech, Inc. | 20 |
2 |
| Forum US, Inc. | 337 |
2 |
| Nuovo Pignone SRL | 202 |
2 |
| Other owners | 63 |