- 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: 431
10-year publication summary
|
28
|
38
|
35
|
28
|
42
|
23
|
10
|
10
|
13
|
2
|
| 2017 | 2018 | 2019 | 2020 | 2021 | 2022 | 2023 | 2024 | 2025 | 2026 |
Principal owners for this class
| Owner |
All patents
|
This class
|
|---|---|---|
| Equinor Energy AS | 499 |
35 |
| Vetco Gray Scandinavia AS | 173 |
23 |
| Technip France | 693 |
22 |
| FMC Technologies, Inc. | 605 |
19 |
| Petroleo Brasileiro S.A. - Petrobras | 923 |
19 |
| OneSubsea IP UK Limited | 431 |
15 |
| EnPro Subsea Limited | 31 |
14 |
| Cameron International Corporation | 1361 |
11 |
| Aker Solutions AS | 177 |
10 |
| Halliburton Energy Services, Inc. | 21153 |
9 |
| Trendsetter Engineering, Inc. | 51 |
9 |
| Statoil Petroleum AS | 492 |
8 |
| Acergy France SAS | 132 |
7 |
| BP Corporation North America Inc. | 745 |
7 |
| Subsea 7 Limited | 229 |
7 |
| Subsea 7 Norway AS | 91 |
7 |
| Horisont Energi AS | 36 |
7 |
| Chevron U.S.A. Inc. | 4075 |
6 |
| Oceaneering International, Inc. | 427 |
6 |
| OneSubsea AS | 83 |
6 |
| Other owners | 184 |