- 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 43/01 - Methods or apparatus for obtaining oil, gas, water, soluble or meltable materials or a slurry of minerals from wells specially adapted for obtaining from underwater installations
Patent holdings for IPC class E21B 43/01
Total number of patents in this class: 1068
10-year publication summary
|
93
|
87
|
92
|
73
|
63
|
76
|
65
|
40
|
37
|
32
|
| 2016 | 2017 | 2018 | 2019 | 2020 | 2021 | 2022 | 2023 | 2024 | 2025 |
Principal owners for this class
| Owner |
All patents
|
This class
|
|---|---|---|
| Equinor Energy AS | 506 |
41 |
| OneSubsea IP UK Limited | 424 |
38 |
| Chevron U.S.A. Inc. | 4020 |
34 |
| Technip France | 699 |
32 |
| Aker Solutions AS | 243 |
30 |
| FMC Technologies, Inc. | 608 |
25 |
| Petroleo Brasileiro S.A. - Petrobras | 886 |
24 |
| BP Corporation North America Inc. | 748 |
23 |
| Statoil Petroleum AS | 510 |
22 |
| ConocoPhillips Company | 1689 |
19 |
| Guangzhou Institute of Energy Conversion, Chinese Academy of Sciences | 239 |
18 |
| Halliburton Energy Services, Inc. | 21090 |
17 |
| Shell Internationale Research Maatschappij B.V. | 3542 |
16 |
| Subsea 7 Norway AS | 90 |
16 |
| Saudi Arabian Oil Company | 13686 |
14 |
| Vetco Gray Scandinavia AS | 172 |
14 |
| FMC Technologies do Brasil Ltda. | 66 |
14 |
| Acergy France SAS | 132 |
13 |
| ExxonMobil Upstream Research Company | 2378 |
13 |
| Shell Oil Company | 2133 |
12 |
| Other owners | 633 |