- 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: 192
10-year publication summary
|
3
|
1
|
6
|
16
|
12
|
26
|
24
|
12
|
16
|
15
|
| 2016 | 2017 | 2018 | 2019 | 2020 | 2021 | 2022 | 2023 | 2024 | 2025 |
Principal owners for this class
| Owner |
All patents
|
This class
|
|---|---|---|
| Halliburton Energy Services, Inc. | 21090 |
53 |
| Saudi Arabian Oil Company | 13686 |
18 |
| Schlumberger Technology Corporation | 11075 |
15 |
| Aramco Services Company | 4099 |
7 |
| Darkvision Technologies Inc. | 85 |
7 |
| Schlumberger Canada Limited | 7440 |
5 |
| Services Petroliers Schlumberger | 5885 |
5 |
| Baker Hughes Oilfield Operations, LLC | 2393 |
5 |
| Schlumberger Technology B.v. | 5224 |
4 |
| ConocoPhillips Company | 1689 |
4 |
| Pipelines 2 Data (p2d) Limited | 18 |
4 |
| Prad Research and Development Limited | 2687 |
4 |
| Schlumberger Holdings Limited | 2784 |
3 |
| Baker Hughes Incorporated | 5172 |
3 |
| GE Energy Oilfield Technology, Inc. | 19 |
3 |
| WWT International Coiled Tubing Services, LLC | 3 |
3 |
| Toshiba Corporation | 12547 |
2 |
| CARBO Ceramics Inc. | 233 |
2 |
| China National Petroleum Corporation | 479 |
2 |
| China Petroleum & Chemical Corporation | 1955 |
2 |
| Other owners | 41 |