- All sections
- F - Mechanical engineering; lighting; heating; weapons; blasting
- F04F - Pumping of fluid by direct contact of another fluid or by using inertia of fluid to be pumped; siphons
- F04F 1/20 - Pumps using positively or negatively pressurised fluid medium acting directly on the liquid to be pumped the fluid medium being mixed with, or generated from, the liquid to be pumped specially adapted for raising liquids from great depths, e.g. in wells
Patent holdings for IPC class F04F 1/20
Total number of patents in this class: 35
10-year publication summary
|
0
|
0
|
4
|
3
|
7
|
7
|
9
|
4
|
0
|
1
|
| 2016 | 2017 | 2018 | 2019 | 2020 | 2021 | 2022 | 2023 | 2024 | 2025 |
Principal owners for this class
| Owner |
All patents
|
This class
|
|---|---|---|
| Natural Ocean Well Co. | 27 |
6 |
| LiftRock LLC | 8 |
5 |
| Q.E.D. Environmental Systems, Inc. | 95 |
2 |
| Source Rock Energy Partners Inc. | 11 |
2 |
| Sam and Gail LLC | 3 |
2 |
| Schlumberger Technology Corporation | 10263 |
1 |
| 1497690 Alberta Ltd. | 2 |
1 |
| Coldharbour Marine Limited | 5 |
1 |
| Her Majesty The Queen in Right of Canada AS represented by The Minister of Natural Resources Canada | 87 |
1 |
| MODEC, Inc. | 20 |
1 |
| National University Corporation Kobe University | 498 |
1 |
| PCS Ferguson, Inc. | 22 |
1 |
| Petroleo Brasileiro S.A. - Petrobras | 782 |
1 |
| Raise Production Inc. | 11 |
1 |
| University of Guelph | 349 |
1 |
| Cleantek Industries Inc. | 30 |
1 |
| Ducon - Becker Service Technology | 3 |
1 |
| Creamer, Reginald D. | 1 |
1 |
| Bontech Pty Ltd | 1 |
1 |
| Energybooster AB | 3 |
1 |
| Other owners | 3 |