- All sections
- F - Mechanical engineeringlightingheatingweaponsblasting
- F04D - Non-positive-displacement pumps
- F04D 13/12 - Combinations of two or more pumps
Patent holdings for IPC class F04D 13/12
Total number of patents in this class: 312
10-year publication summary
|
37
|
38
|
30
|
21
|
31
|
24
|
21
|
26
|
22
|
6
|
| 2017 | 2018 | 2019 | 2020 | 2021 | 2022 | 2023 | 2024 | 2025 | 2026 |
Principal owners for this class
| Owner |
All patents
|
This class
|
|---|---|---|
| Halliburton Energy Services, Inc. | 21338 |
16 |
| Grundfos Holding A/S | 606 |
10 |
| Skier's Choice, Inc. | 44 |
8 |
| Schweitzer Engineering Laboratories, Inc. | 904 |
7 |
| State Farm Mutual Automobile Insurance Company | 3421 |
7 |
| Hamilton Sundstrand Corporation | 5015 |
6 |
| Pierburg GmbH | 480 |
5 |
| Industrial Flow Solutions Operating, LLC | 95 |
5 |
| Schlumberger Technology Corporation | 11818 |
4 |
| Schlumberger Canada Limited | 7606 |
4 |
| Deere & Company | 8097 |
4 |
| Edwards Limited | 774 |
4 |
| Nidec GPM GmbH | 143 |
4 |
| Transocean Innovation Labs Ltd | 43 |
4 |
| Baker Hughes Holdings LLC | 3023 |
4 |
| Honda Motor Co., Ltd. | 26025 |
3 |
| Caterpillar Inc. | 10267 |
3 |
| The United States of America as represented by the Secretary of the Navy | 2858 |
3 |
| Hewlett Packard Enterprise Development LP | 11493 |
3 |
| Cooler Master Co., Ltd. | 265 |
3 |
| Other owners | 205 |