- 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: 864
10-year publication summary
|
50
|
47
|
69
|
74
|
87
|
85
|
87
|
68
|
65
|
43
|
| 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 |
63 |
| Graco Minnesota Inc. | 1202 |
55 |
| Putzmeister Engineering GmbH | 340 |
53 |
| Kerr Machine Co. | 144 |
44 |
| Schwing GmbH | 115 |
22 |
| US Well Services LLC | 226 |
20 |
| Sany Heavy Industry Co., Ltd. | 243 |
18 |
| Yantai Jereh Petroleum Equipment & Technologies Co., Ltd. | 453 |
17 |
| Hunan Sany Intelligent Control Equipment Co., Ltd. | 345 |
16 |
| Schlumberger Technology Corporation | 10780 |
15 |
| SPM Oil & Gas Inc. | 328 |
15 |
| Zoomlion Heavy Industry Science and Technology Co., Ltd. | 376 |
14 |
| BJ Energy Solutions, LLC (formerly TES Asset Acquisition, LLC) | 215 |
14 |
| Precision Planting LLC | 1107 |
13 |
| Hunan Zoomlion Special Vehicle Co., Ltd. | 361 |
11 |
| Weir Minerals Netherlands B.V. | 60 |
10 |
| National Oilwell Varco, L.P. | 1682 |
9 |
| Wagner Spray Tech Corporation | 393 |
9 |
| Vermeer Manufacturing Company | 638 |
8 |
| Baker Hughes, a GE Company, LLC | 2110 |
8 |
| Other owners | 430 |