- All sections
- F - Mechanical engineering; lighting; heating; weapons; blasting
- 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: 268
10-year publication summary
|
31
|
25
|
37
|
38
|
30
|
21
|
30
|
18
|
18
|
8
|
| 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 |
15 |
| Grundfos Holding A/S | 506 |
8 |
| Schweitzer Engineering Laboratories, Inc. | 920 |
7 |
| Skier's Choice, Inc. | 37 |
7 |
| Hamilton Sundstrand Corporation | 4525 |
5 |
| Pierburg GmbH | 435 |
5 |
| Schlumberger Technology Corporation | 9690 |
4 |
| Schlumberger Canada Limited | 6913 |
4 |
| Deere & Company | 6845 |
4 |
| Edwards Limited | 764 |
4 |
| Transocean Innovation Labs Ltd | 46 |
4 |
| Baker Hughes Holdings LLC | 3060 |
4 |
| Honda Motor Co., Ltd. | 24537 |
3 |
| International Business Machines Corporation | 60644 |
3 |
| Caterpillar Inc. | 8877 |
3 |
| Hewlett Packard Enterprise Development LP | 10702 |
3 |
| Cooler Master Co., Ltd. | 191 |
3 |
| Hytrans Beheer B.V. | 23 |
3 |
| Nidec GPM GmbH | 152 |
3 |
| Nuhn Industries Limited | 56 |
3 |
| Other owners | 173 |