- 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 41/08 - Underwater guide bases, e.g. drilling templatesLevelling thereof
Patent holdings for IPC class E21B 41/08
Total number of patents in this class: 120
10-year publication summary
|
7
|
11
|
17
|
14
|
12
|
8
|
8
|
7
|
2
|
3
|
| 2016 | 2017 | 2018 | 2019 | 2020 | 2021 | 2022 | 2023 | 2024 | 2025 |
Principal owners for this class
| Owner |
All patents
|
This class
|
|---|---|---|
| Neodrill AS | 40 |
22 |
| Equinor Energy AS | 506 |
16 |
| FMC Kongsberg Subsea AS | 190 |
7 |
| Aker Solutions AS | 243 |
6 |
| Aker Subsea AS | 127 |
6 |
| Horisont Energi AS | 35 |
5 |
| Statoil Petroleum AS | 510 |
4 |
| Subsea 7 Norway AS | 90 |
4 |
| TechnipFMC Norge AS | 95 |
3 |
| ConocoPhillips Company | 1689 |
2 |
| ExxonMobil Upstream Research Company | 2378 |
2 |
| FMC Technologies, Inc. | 608 |
2 |
| J. Ray McDermott, S.A. | 60 |
2 |
| Saipem S.A. | 228 |
2 |
| Trendsetter Vulcan Offshore, Inc. | 60 |
2 |
| Vetco Gray Inc. | 147 |
2 |
| Baker Hughes Energy Technology UK Limited | 215 |
2 |
| Halliburton Energy Services, Inc. | 21090 |
1 |
| Weatherford Technology Holdings, LLC | 2034 |
1 |
| Aker Subsea Inc. | 12 |
1 |
| Other owners | 28 |