- All sections
- F - Mechanical engineering; lighting; heating; weapons; blasting
- F04B - Positive-displacement machines for liquids; pumps
- F04B 51/00 - Testing machines, pumps, or pumping installations
Patent holdings for IPC class F04B 51/00
Total number of patents in this class: 850
10-year publication summary
|
56
|
100
|
124
|
111
|
92
|
83
|
77
|
53
|
80
|
17
|
| 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 |
32 |
| Caterpillar Inc. | 8877 |
21 |
| Schlumberger Technology Corporation | 9690 |
20 |
| Weatherford Technology Holdings, LLC | 2135 |
15 |
| Robert Bosch GmbH | 40953 |
12 |
| Artemis Intelligent Power Limited | 106 |
12 |
| Kaeser KOMPRESSOREN SE | 166 |
10 |
| Copeland LP | 656 |
10 |
| DEKA Products Limited Partnership | 1640 |
9 |
| Graco Minnesota Inc. | 1124 |
9 |
| Medtronic MiniMed, Inc. | 1808 |
8 |
| Hitachi Industrial Equipment Systems Co., Ltd. | 1334 |
8 |
| Prominent GmbH | 97 |
8 |
| Mitsubishi Electric Corporation | 43934 |
7 |
| ITT Manufacturing Enterprises LLC | 518 |
7 |
| Smith & Nephew plc | 779 |
7 |
| Schlumberger Canada Limited | 6913 |
6 |
| Schlumberger Technology B.v. | 4951 |
6 |
| Edwards Limited | 764 |
6 |
| Fluid Handling LLC | 241 |
6 |
| Other owners | 631 |