- 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 43/013 - Connecting a production flow line to an underwater well head
Patent holdings for IPC class E21B 43/013
Total number of patents in this class: 433
10-year publication summary
|
36
|
28
|
38
|
35
|
28
|
41
|
23
|
10
|
10
|
12
|
| 2016 | 2017 | 2018 | 2019 | 2020 | 2021 | 2022 | 2023 | 2024 | 2025 |
Principal owners for this class
| Owner |
All patents
|
This class
|
|---|---|---|
| Equinor Energy AS | 500 |
37 |
| Vetco Gray Scandinavia AS | 172 |
23 |
| Technip France | 705 |
22 |
| FMC Technologies, Inc. | 609 |
19 |
| Petroleo Brasileiro S.A. - Petrobras | 862 |
19 |
| Aker Solutions AS | 243 |
16 |
| EnPro Subsea Limited | 33 |
16 |
| OneSubsea IP UK Limited | 423 |
15 |
| Cameron International Corporation | 1342 |
11 |
| Trendsetter Engineering, Inc. | 52 |
9 |
| Halliburton Energy Services, Inc. | 20946 |
8 |
| Statoil Petroleum AS | 524 |
8 |
| Acergy France SAS | 131 |
7 |
| BP Corporation North America Inc. | 747 |
7 |
| Subsea 7 Limited | 221 |
7 |
| Subsea 7 Norway AS | 89 |
7 |
| Horisont Energi AS | 34 |
7 |
| Oceaneering International, Inc. | 424 |
6 |
| Schlumberger Canada Limited | 7366 |
5 |
| Aker Subsea AS | 129 |
5 |
| Other owners | 179 |