- All sections
- E - Fixed constructions
- E21B - Earth or rock drillingobtaining oil, gas, water, soluble or meltable materials or a slurry of minerals from wells
- E21B 7/124 - Underwater drilling with underwater tool drive prime mover, e.g. portable drilling rigs for use on underwater floors
Patent holdings for IPC class E21B 7/124
Total number of patents in this class: 89
10-year publication summary
|
3
|
8
|
5
|
8
|
8
|
5
|
6
|
1
|
2
|
0
|
| 2016 | 2017 | 2018 | 2019 | 2020 | 2021 | 2022 | 2023 | 2024 | 2025 |
Principal owners for this class
| Owner |
All patents
|
This class
|
|---|---|---|
| Seabed Rig AS | 14 |
7 |
| FMC Technologies, Inc. | 600 |
4 |
| Bauer Offshore Technologies GmbH | 10 |
4 |
| Bauer Maschinen GmbH | 218 |
3 |
| Blade Offshore Services Ltd | 4 |
3 |
| Vetco Gray Scandinavia AS | 173 |
3 |
| Zentech, Inc. | 11 |
3 |
| Benthic USA LLC | 6 |
3 |
| Rigtec Wellservice AS | 3 |
3 |
| Schlumberger Technology Corporation | 10641 |
2 |
| Smith International, Inc. | 720 |
2 |
| Cameron International Corporation | 1329 |
2 |
| China University of Petroleum (Beijing) | 278 |
2 |
| Fugro Seacore Limited | 5 |
2 |
| Itrec B.V. | 501 |
2 |
| MARL Technologies Inc. | 12 |
2 |
| Fnv IP B.V. | 297 |
2 |
| Noble Drilling A/S | 49 |
2 |
| Schlumberger B.V. | 2 |
1 |
| Schlumberger Canada Limited | 7244 |
1 |
| Other owners | 36 |