- All sections
- F - Mechanical engineering; lighting; heating; weapons; blasting
- 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: 116
10-year publication summary
|
7
|
12
|
17
|
12
|
14
|
8
|
9
|
15
|
7
|
0
|
| 2016 | 2017 | 2018 | 2019 | 2020 | 2021 | 2022 | 2023 | 2024 | 2025 |
Principal owners for this class
| Owner |
All patents
|
This class
|
|---|---|---|
| Halliburton Energy Services, Inc. | 20438 |
8 |
| US Well Services LLC | 224 |
6 |
| Baker Hughes Oilfield Operations, LLC | 2128 |
6 |
| Mitsubishi Heavy Industries Compressor Corporation | 620 |
4 |
| GREE Electric Appliances, Inc. of Zhuhai | 3154 |
3 |
| ITT Manufacturing Enterprises LLC | 410 |
3 |
| KSB Aktiengesellschaft | 165 |
3 |
| General Electric Company | 17789 |
2 |
| Robert Bosch GmbH | 41786 |
2 |
| Ebara Corporation | 2078 |
2 |
| Aisan Kogyo Kabushiki Kaisha | 722 |
2 |
| Asia Vital Components Co., Ltd. | 402 |
2 |
| Ecotech, Inc. | 19 |
2 |
| Forum US, Inc. | 330 |
2 |
| Nuovo Pignone SRL | 203 |
2 |
| Parker-Hannifin Corporation | 1022 |
2 |
| Turbomeca | 228 |
2 |
| KSB SE & Co. KGaA | 674 |
2 |
| Parker Hannifin EMEA S.à.r.l. | 75 |
2 |
| Baker Hughes Holdings LLC | 3009 |
2 |
| Other owners | 57 |