- 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: 1035
10-year publication summary
|
124
|
111
|
92
|
83
|
79
|
59
|
90
|
82
|
83
|
72
|
| 2017 | 2018 | 2019 | 2020 | 2021 | 2022 | 2023 | 2024 | 2025 | 2026 |
Principal owners for this class
| Owner |
All patents
|
This class
|
|---|---|---|
| Halliburton Energy Services, Inc. | 21296 |
42 |
| Schlumberger Technology Corporation | 11981 |
25 |
| Caterpillar Inc. | 10343 |
24 |
| Robert Bosch GmbH | 44398 |
12 |
| Mitsubishi Electric Corporation | 48460 |
12 |
| Weatherford Technology Holdings, LLC | 2168 |
12 |
| Artemis Intelligent Power Limited | 88 |
12 |
| Hitachi Industrial Equipment Systems Co., Ltd. | 1561 |
12 |
| Kaeser KOMPRESSOREN SE | 190 |
12 |
| Prominent GmbH | 98 |
10 |
| Copeland LP | 716 |
10 |
| Graco Minnesota Inc. | 1290 |
9 |
| Yantai Jereh Oilfield Services Group Co., Ltd. | 94 |
9 |
| SPM Oil & Gas Inc. | 361 |
9 |
| Medtronic MiniMed, Inc. | 1788 |
8 |
| Edwards Limited | 775 |
8 |
| Smith & Nephew plc | 747 |
8 |
| Grundfos Holding A/S | 615 |
8 |
| Hitachi Construction Machinery Co., Ltd. | 2807 |
7 |
| Ebara Corporation | 2379 |
7 |
| Other owners | 779 |