- 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 47/085 - Measuring diameters or related dimensions at the borehole using radiant means, e.g. acoustic, radioactive or electromagnetic
Patent holdings for IPC class E21B 47/085
Total number of patents in this class: 175
10-year publication summary
|
5
|
2
|
6
|
19
|
14
|
28
|
26
|
12
|
17
|
3
|
| 2016 | 2017 | 2018 | 2019 | 2020 | 2021 | 2022 | 2023 | 2024 | 2025 |
Principal owners for this class
| Owner |
All patents
|
This class
|
|---|---|---|
| Halliburton Energy Services, Inc. | 20684 |
51 |
| Schlumberger Technology Corporation | 10591 |
14 |
| Saudi Arabian Oil Company | 12785 |
13 |
| Darkvision Technologies Inc. | 80 |
7 |
| Schlumberger Canada Limited | 7201 |
5 |
| Services Petroliers Schlumberger | 5739 |
5 |
| Schlumberger Technology B.v. | 5138 |
4 |
| ConocoPhillips Company | 1668 |
4 |
| Pipelines 2 Data (p2d) Limited | 18 |
4 |
| Prad Research and Development Limited | 2695 |
4 |
| Schlumberger Holdings Limited | 2847 |
3 |
| Baker Hughes Incorporated | 5301 |
3 |
| Aramco Services Company | 3894 |
3 |
| GE Energy Oilfield Technology, Inc. | 20 |
3 |
| Baker Hughes Oilfield Operations, LLC | 2251 |
3 |
| WWT International Coiled Tubing Services, LLC | 3 |
3 |
| Toshiba Corporation | 12261 |
2 |
| CARBO Ceramics Inc. | 237 |
2 |
| China Petroleum & Chemical Corporation | 1858 |
2 |
| Pile Dynamics, Inc. | 24 |
2 |
| Other owners | 38 |