- All sections
- F - Mechanical engineeringlightingheatingweaponsblasting
- F04B - Positive-displacement machines for liquidspumps
- F04B 15/02 - Pumps adapted to handle specific fluids, e.g. by selection of specific materials for pumps or pump parts the fluids being viscous or non-homogeneous
Patent holdings for IPC class F04B 15/02
Total number of patents in this class: 902
10-year publication summary
|
47
|
69
|
74
|
87
|
85
|
89
|
69
|
67
|
62
|
16
|
| 2017 | 2018 | 2019 | 2020 | 2021 | 2022 | 2023 | 2024 | 2025 | 2026 |
Principal owners for this class
| Owner |
All patents
|
This class
|
|---|---|---|
| Halliburton Energy Services, Inc. | 21194 |
64 |
| Putzmeister Engineering GmbH | 353 |
61 |
| Graco Minnesota Inc. | 1254 |
58 |
| Kerr Machine Co. | 166 |
50 |
| Schwing GmbH | 120 |
26 |
| US Well Services LLC | 224 |
19 |
| Precision Planting LLC | 1165 |
18 |
| Sany Heavy Industry Co., Ltd. | 240 |
17 |
| Hunan Sany Intelligent Control Equipment Co., Ltd. | 345 |
16 |
| Yantai Jereh Petroleum Equipment & Technologies Co., Ltd. | 467 |
16 |
| Schlumberger Technology Corporation | 11483 |
15 |
| Zoomlion Heavy Industry Science and Technology Co., Ltd. | 398 |
15 |
| BJ Energy Solutions, LLC (formerly TES Asset Acquisition, LLC) | 228 |
15 |
| SPM Oil & Gas Inc. | 347 |
15 |
| Weir Minerals Netherlands B.V. | 64 |
12 |
| Hunan Zoomlion Special Vehicle Co., Ltd. | 361 |
11 |
| National Oilwell Varco, L.P. | 1690 |
9 |
| Vermeer Manufacturing Company | 666 |
8 |
| Wagner Spray Tech Corporation | 394 |
8 |
| Baker Hughes, a GE Company, LLC | 2101 |
8 |
| Other owners | 441 |