- All sections
- F - Mechanical engineeringlightingheatingweaponsblasting
- F04B - Positive-displacement machines for liquidspumps
- F04B 51/00 - Testing machines, pumps, or pumping installations
Patent holdings for IPC class F04B 51/00
Total number of patents in this class: 970
10-year publication summary
|
97
|
119
|
104
|
90
|
80
|
73
|
56
|
81
|
79
|
63
|
| 2016 | 2017 | 2018 | 2019 | 2020 | 2021 | 2022 | 2023 | 2024 | 2025 |
Principal owners for this class
| Owner |
All patents
|
This class
|
|---|---|---|
| Halliburton Energy Services, Inc. | 20977 |
40 |
| Schlumberger Technology Corporation | 10914 |
25 |
| Caterpillar Inc. | 9644 |
23 |
| Weatherford Technology Holdings, LLC | 2033 |
12 |
| Artemis Intelligent Power Limited | 100 |
12 |
| Kaeser KOMPRESSOREN SE | 183 |
12 |
| Robert Bosch GmbH | 42826 |
11 |
| DEKA Products Limited Partnership | 1788 |
11 |
| Mitsubishi Electric Corporation | 46590 |
10 |
| Hitachi Industrial Equipment Systems Co., Ltd. | 1466 |
10 |
| Prominent GmbH | 99 |
10 |
| Copeland LP | 702 |
10 |
| Graco Minnesota Inc. | 1213 |
9 |
| Medtronic MiniMed, Inc. | 1804 |
8 |
| Hitachi Construction Machinery Co., Ltd. | 2676 |
7 |
| Edwards Limited | 787 |
7 |
| Smith & Nephew plc | 759 |
7 |
| US Well Services LLC | 226 |
7 |
| Yantai Jereh Oilfield Services Group Co., Ltd. | 68 |
7 |
| BJ Energy Solutions, LLC (formerly TES Asset Acquisition, LLC) | 216 |
7 |
| Other owners | 725 |