- 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 47/098 - Locating or determining the position of objects in boreholes or wellsIdentifying the free or blocked portions of pipes using impression packers, e.g. to detect recesses or perforations
Patent holdings for IPC class E21B 47/098
Total number of patents in this class: 19
10-year publication summary
|
2
|
0
|
0
|
0
|
3
|
3
|
0
|
4
|
4
|
1
|
| 2016 | 2017 | 2018 | 2019 | 2020 | 2021 | 2022 | 2023 | 2024 | 2025 |
Principal owners for this class
| Owner |
All patents
|
This class
|
|---|---|---|
| Saudi Arabian Oil Company | 12997 |
7 |
| Schlumberger Technology Corporation | 10673 |
3 |
| Exedra AS | 7 |
3 |
| Aker Solutions AS | 240 |
1 |
| Aramco Services Company | 3936 |
1 |
| FMC Technologies, Inc. | 601 |
1 |
| David, David | 1 |
1 |
| Raz, Eli | 1 |
1 |
| Rokk Energy Technologies Inc. | 5 |
1 |
| Other owners | 0 |