- All sections
- F - Mechanical engineeringlightingheatingweaponsblasting
- F04B - Positive-displacement machines for liquidspumps
- F04B 47/08 - Pumps or pumping installations specially adapted for raising fluids from great depths, e.g. well pumps having motor-pump units situated at great depth the motors being actuated by fluid
Patent holdings for IPC class F04B 47/08
Total number of patents in this class: 59
10-year publication summary
|
7
|
13
|
5
|
12
|
4
|
9
|
2
|
5
|
1
|
1
|
| 2017 | 2018 | 2019 | 2020 | 2021 | 2022 | 2023 | 2024 | 2025 | 2026 |
Principal owners for this class
| Owner |
All patents
|
This class
|
|---|---|---|
| PMC Pumps Inc. | 34 |
6 |
| Weatherford Technology Holdings, LLC | 2167 |
4 |
| Flapump AS | 3 |
3 |
| Halliburton Energy Services, Inc. | 21300 |
2 |
| Depiak Industrial Technology Corporation | 3 |
2 |
| I-jack Technologies Incorporated | 30 |
2 |
| Wright's IP Holdings, LLC | 31 |
2 |
| Digital Downhole IP, LLC | 3 |
2 |
| Caterpillar Inc. | 10364 |
1 |
| Aramco Services Company | 4191 |
1 |
| Celtic Machining Ltd. | 11 |
1 |
| Energy Recovery, Inc. | 192 |
1 |
| FMC Technologies, Inc. | 622 |
1 |
| GreenStract, LLC | 9 |
1 |
| Her Majesty the Queen in right of Canada, as represented by the Minister of Natural Resources | 105 |
1 |
| ICI Artificial Lift Inc. | 1 |
1 |
| Itrec B.V. | 507 |
1 |
| KNORR-BREMSE Systeme fuer Nutzfahrzeuge GmbH | 671 |
1 |
| Lifteck International Inc. | 2 |
1 |
| Q.E.D. Environmental Systems, Inc. | 91 |
1 |
| Other owners | 24 |