- All sections
- F - Mechanical engineeringlightingheatingweaponsblasting
- F04D - Non-positive-displacement pumps
- F04D 1/08 - Multi-stage pumps the stages being situated concentrically
Patent holdings for IPC class F04D 1/08
Total number of patents in this class: 52
10-year publication summary
|
5
|
5
|
2
|
7
|
7
|
8
|
6
|
2
|
5
|
2
|
| 2016 | 2017 | 2018 | 2019 | 2020 | 2021 | 2022 | 2023 | 2024 | 2025 |
Principal owners for this class
| Owner |
All patents
|
This class
|
|---|---|---|
| Ebara Corporation | 2169 |
9 |
| Mitsubishi Heavy Industries, Ltd. | 8715 |
5 |
| Halliburton Energy Services, Inc. | 20891 |
4 |
| Hitachi, Ltd. | 15484 |
3 |
| Sulzer Management AG | 662 |
3 |
| Mitsubishi Heavy Industries Compressor Corporation | 630 |
2 |
| Hitachi Industrial Products, Ltd. | 186 |
2 |
| Baker Hughes Holdings LLC | 3007 |
2 |
| Wuhu Midea Smart Kitchen Appliance Manufacturing Co., Ltd. | 114 |
2 |
| General Electric Company | 13780 |
1 |
| Alkhorayef Petroleum Company Limited | 3 |
1 |
| Kubota Corporation | 3899 |
1 |
| Microfabrica Inc. | 121 |
1 |
| Midea Group Co., Ltd. | 4547 |
1 |
| Nikkiso Co., Ltd. | 775 |
1 |
| Nippon Oil Pump Co., Ltd. | 29 |
1 |
| Sanso Electric Co.,Ltd. | 12 |
1 |
| Vetco Gray Scandinavia AS | 172 |
1 |
| Nuovo Pignone Tecnologie S.r.l. | 973 |
1 |
| Baker Hughes, a GE Company, LLC | 2112 |
1 |
| Other owners | 9 |