- 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: 140
10-year publication summary
|
12
|
17
|
12
|
14
|
8
|
10
|
15
|
9
|
6
|
10
|
| 2017 | 2018 | 2019 | 2020 | 2021 | 2022 | 2023 | 2024 | 2025 | 2026 |
Principal owners for this class
| Owner |
All patents
|
This class
|
|---|---|---|
| Halliburton Energy Services, Inc. | 21296 |
9 |
| Baker Hughes Oilfield Operations, LLC | 2551 |
8 |
| Schlumberger Technology Corporation | 11893 |
5 |
| US Well Services LLC | 225 |
5 |
| Mitsubishi Heavy Industries Compressor Corporation | 650 |
4 |
| Schlumberger Canada Limited | 7627 |
3 |
| Schlumberger Technology B.v. | 5302 |
3 |
| GREE Electric Appliances, Inc. of Zhuhai | 3317 |
3 |
| ITT Manufacturing Enterprises LLC | 419 |
3 |
| KSB Aktiengesellschaft | 153 |
3 |
| Services Petroliers Schlumberger | 6038 |
3 |
| Grundfos Holding A/S | 612 |
3 |
| KSB SE & Co. KGaA | 740 |
3 |
| LG Electronics Inc. | 75910 |
2 |
| Robert Bosch GmbH | 44252 |
2 |
| Ebara Corporation | 2345 |
2 |
| Aisan Kogyo Kabushiki Kaisha | 770 |
2 |
| Asia Vital Components Co., Ltd. | 436 |
2 |
| Ecotech, Inc. | 10 |
2 |
| Forum US, Inc. | 349 |
2 |
| Other owners | 71 |