- All sections
- F - Mechanical engineering; lighting; heating; weapons; blasting
- F04B - Positive-displacement machines for liquids; pumps
- 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: 788
10-year publication summary
|
46
|
58
|
53
|
77
|
82
|
99
|
85
|
90
|
65
|
20
|
| 2015 | 2016 | 2017 | 2018 | 2019 | 2020 | 2021 | 2022 | 2023 | 2024 |
Principal owners for this class
| Owner |
All patents
|
This class
|
|---|---|---|
| Halliburton Energy Services, Inc. | 20165 |
55 |
| Graco Minnesota Inc. | 1124 |
47 |
| Putzmeister Engineering GmbH | 309 |
42 |
| Kerr Machine Co. | 98 |
26 |
| Schwing GmbH | 107 |
19 |
| US Well Services LLC | 212 |
19 |
| Sany Heavy Industry Co., Ltd. | 243 |
18 |
| Hunan Sany Intelligent Control Equipment Co., Ltd. | 341 |
16 |
| Schlumberger Technology Corporation | 9690 |
15 |
| Zoomlion Heavy Industry Science and Technology Co., Ltd. | 344 |
14 |
| SPM Oil & Gas Inc. | 304 |
14 |
| Yantai Jereh Petroleum Equipment & Technologies Co., Ltd. | 396 |
13 |
| BJ Energy Solutions, LLC (formerly TES Asset Acquisition, LLC) | 196 |
13 |
| Hunan Zoomlion Special Vehicle Co., Ltd. | 361 |
11 |
| Weir Minerals Netherlands B.V. | 45 |
9 |
| Precision Planting LLC | 925 |
8 |
| Baker Hughes, a GE Company, LLC | 2171 |
8 |
| National Oilwell Varco, L.P. | 1604 |
7 |
| Vermeer Manufacturing Company | 615 |
7 |
| Wagner Spray Tech Corporation | 377 |
7 |
| Other owners | 420 |