- All sections
- F - Mechanical engineering; lighting; heating; weapons; blasting
- 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: 50
10-year publication summary
|
5
|
5
|
2
|
7
|
7
|
8
|
6
|
2
|
5
|
0
|
| 2016 | 2017 | 2018 | 2019 | 2020 | 2021 | 2022 | 2023 | 2024 | 2025 |
Principal owners for this class
| Owner |
All patents
|
This class
|
|---|---|---|
| Ebara Corporation | 2078 |
9 |
| Mitsubishi Heavy Industries, Ltd. | 8538 |
5 |
| Halliburton Energy Services, Inc. | 20438 |
4 |
| Hitachi, Ltd. | 15226 |
3 |
| Sulzer Management AG | 666 |
3 |
| Mitsubishi Heavy Industries Compressor Corporation | 620 |
2 |
| Hitachi Industrial Products, Ltd. | 180 |
2 |
| Baker Hughes Holdings LLC | 3009 |
2 |
| General Electric Company | 17789 |
1 |
| Alkhorayef Petroleum Company Limited | 3 |
1 |
| Kubota Corporation | 3495 |
1 |
| Microfabrica Inc. | 111 |
1 |
| Midea Group Co., Ltd. | 4300 |
1 |
| Nikkiso Co., Ltd. | 788 |
1 |
| Nippon Oil Pump Co., Ltd. | 29 |
1 |
| Sanso Electric Co.,Ltd. | 12 |
1 |
| Vetco Gray Scandinavia AS | 172 |
1 |
| Baker Hughes, a GE Company, LLC | 2138 |
1 |
| Advanced Design Technology Ltd. | 2 |
1 |
| Flowserve Pte. Ltd | 369 |
1 |
| Other owners | 8 |