- All sections
- E - Fixed constructions
- E21B - Earth or rock drilling; obtaining 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: 1048
10-year publication summary
|
110
|
102
|
93
|
100
|
78
|
70
|
83
|
67
|
41
|
15
|
| 2015 | 2016 | 2017 | 2018 | 2019 | 2020 | 2021 | 2022 | 2023 | 2024 |
Principal owners for this class
| Owner |
All patents
|
This class
|
|---|---|---|
| Equinor Energy AS | 475 |
41 |
| Chevron U.S.A. Inc. | 3774 |
35 |
| Technip France | 737 |
33 |
| OneSubsea IP UK Limited | 378 |
32 |
| Aker Solutions AS | 226 |
29 |
| BP Corporation North America Inc. | 776 |
24 |
| FMC Technologies, Inc. | 603 |
24 |
| Statoil Petroleum AS | 555 |
23 |
| Petroleo Brasileiro S.A. - Petrobras | 730 |
21 |
| ConocoPhillips Company | 1657 |
20 |
| Shell Internationale Research Maatschappij B.V. | 3792 |
18 |
| Halliburton Energy Services, Inc. | 20165 |
17 |
| Guangzhou Institute of Energy Conversion, Chinese Academy of Sciences | 195 |
16 |
| Vetco Gray Scandinavia AS | 177 |
16 |
| ExxonMobil Upstream Research Company | 2525 |
15 |
| FMC Kongsberg Subsea AS | 251 |
15 |
| Subsea 7 Norway AS | 85 |
15 |
| FMC Technologies do Brasil Ltda. | 64 |
14 |
| Acergy France SAS | 124 |
13 |
| Saudi Arabian Oil Company | 11322 |
13 |
| Other owners | 614 |