- All sections
- F - Mechanical engineeringlightingheatingweaponsblasting
- F04B - Positive-displacement machines for liquidspumps
- F04B 19/04 - Pumps for special use
Patent holdings for IPC class F04B 19/04
Total number of patents in this class: 191
10-year publication summary
|
18
|
11
|
14
|
14
|
20
|
27
|
26
|
17
|
24
|
9
|
| 2017 | 2018 | 2019 | 2020 | 2021 | 2022 | 2023 | 2024 | 2025 | 2026 |
Principal owners for this class
| Owner |
All patents
|
This class
|
|---|---|---|
| Kerr Machine Co. | 171 |
26 |
| BJ Energy Solutions, LLC (formerly TES Asset Acquisition, LLC) | 229 |
12 |
| Halliburton Energy Services, Inc. | 21257 |
5 |
| LG Electronics Inc. | 75274 |
5 |
| Robert Bosch GmbH | 43788 |
5 |
| SPM Oil & Gas Inc. | 358 |
5 |
| Hewlett-Packard Development Company, L.P. | 25317 |
4 |
| Terrapower, LLC | 349 |
4 |
| Bayer Medical Care Inc. | 50 |
3 |
| Yantai Jereh Petroleum Equipment & Technologies Co., Ltd. | 469 |
3 |
| Tc1 LLC | 628 |
3 |
| The Regents of the University of California | 20590 |
2 |
| Denso Corporation | 25361 |
2 |
| Ateliers Busch SA | 49 |
2 |
| Graco Minnesota Inc. | 1260 |
2 |
| IDEX Health & Science LLC | 205 |
2 |
| Maximator GmbH | 25 |
2 |
| Brane Audio, LLC | 62 |
2 |
| Typhon Technology Solutions, LLC | 54 |
2 |
| Caremedi Co., Ltd. | 44 |
2 |
| Other owners | 98 |